Fclk frequency for 3600mhz ram

Fclk frequency for 3600mhz ram. Oddly, even though I kept the timings that the ddr4000 kit gave for 4000mhz, the system keeps setting CAS latency at 20 even though I set it at 19 in the bios. Unless I'm misunderstanding, unless my FCLK is running at 1800Mhz the RAM could feasibly be a minor bottleneck for performance on my Ryzen 5950x? I guess a few questions, and an apology for such an unstructured post: Ideally, RAM frequency stays around 3200 MHz while FCLK Frequency stays around 2000 MHz for good performance in general. For most Zen3 non-APU chips that is 1900 (3800 RAM). Dec 24, 2022 · This means that if you have a DDR4 RAM clocked at 3600 MHz then your FCLK frequency should be set to 1800 MHz for optimal performance. Bummer the RAM couldn't sustain 3600mhz. Jun 4, 2021 · Not quite. In BIOS I do not have an xmp profile option. 1600 for 3200 rated RAM . I would also like to add it can reach a system multiplier of 36. However, I will add, most 3600's can use 3600MHz RAM. Trident Z Neo - DDR4-3600MHz CL14-15-15-35 1 There is no such thing as "base FCLK". Learn how to check your FCLK speed, how it relates to memory clock (MCLK), and how to optimize it for gaming. 35v to 1. Jun 5, 2023 · In Zen 2 architecture, FCLK frequency is tied to the memory clock speed. One thing to determine is whether it is the ram at 3600 or the FCLK at 1800 that is your problem. Would it be worth it to push it to 4000MHz desynched? As well, with Ryzen processors, the RMA frequency is related to the frequency of the infinity fabric. Increase it incrementally—small changes can have big impacts. I heard some motherboards on "Auto" set 1. FCLK is the CPUs infinity fabric, which, when on auto, runs at half the DDR frequency. For example: JEDEC 5300 fclk goes to 1767, 6000 RAM should go to 2000 fclk. But beware, it is the most likely to not be stable. 75x 3x, etc) This is critical. May 9, 2021 · One reason for really wanting to push for 3600Mhz, is so that I can have the FCLK frequency set at 1800Mhz rather than 1600Mhz. No idea why. SKILL F4-4000C14D-32GTZN I have discovered possible XMP timings at lower RAM frequency in OCCT -> System Info -> Memory -> Certified Profile section. PBO is enabled but no other CPU overclocking adjustments have been done. Used BIOS to manually set the Adjusted DRAM Frequency (3600MHz), timings (tCL17, tRCDRD18, tRCDWR18, tRP18, tRAS38) and voltage (1. 6 Bios (AGESA 1. 15v, iod to 1. Sep 17, 2021 · I do have an SFF build (NZXT H210) with a Ryzen 5600X, ASUS ROG Strix X570-I motherboard and T-Force Dark Zα 32GB (2x16GB) DDR4 4000MHz CL18 RAM. Jul 26, 2021 · DDR4-3200 is still the officially supported memory frequency on Ryzen 5000. Sep 5, 2021 · If auto is setting fclk to 1200mhz when ram is set to 3600mhz , manually changing fclk to 1800 should improve performance. 1GHz on the CPU all cores. As data is transferred on both the rising clock edge and You want the FCLK frequency to be half the rated speed of your RAM. 1800MHz is the default FCLK on AM4 so the ideal 'clock' RAM is 3600MHz (1800 x 2). Each memory speed has its own optimal fclk, which is why I'm May 29, 2022 · the 5800x3d is 200dollars more than a 5700 for a 15% gain (gaming only), if you wanna stick with 16gb ram that's fine (though for most new builds i recommend 32) but the diff between cl18 and cl16 3600 will be about 3% for the 15dollars diff, you can't carry the cpu forward either, and getting dual ranked ram is another 10-15% difference, since you care enough to pay for a 5800x3d to begin with DRAM frequency: 2134. Sep 5, 2019 · With memory speeds greater than 3600MHz (mclock > 1800MHz), fclock caps at 1800MHz and uclock switches to a 1:2 ratio with mclock. If you’re running 3600MHz RAM, your FCLK should be set at 1800MHz. The FCLK is the speed of the memory controller, the Infinity Fabric and actually the RAM memory, however the RAM memory is read twice per cycle and therefore FLCK of 1600 is DDR@3200 speed. To find highest fclk set all timings to auto, go into advanced, amd overclocking: set soc to 1. 35V. I've got the same board and it has run for months at 1:1 with a 3700x at 3600mhz. Additionally, the FCLK, UCLK and MEMCLK are all synchronised together, so you should always maintain a 1:1 ratio. It's also a common misconception to blame the board topology for poor DRAM frequency with 4 DIMM's, as the majority of cases will have the CPU FCLK or a poor IMC limiting max MCLK frequency before the board topology does. There have been rare exceptions where some really extraordinary Ryzen 3000 samples could run stably with a 1,900 MHz FCLK (DDR4 Apr 12, 2021 · Unless your board is defective in some way I don't think that it would hold you back from 3600mhz 1:1. The faster the RAM, the more CPU performance you get with Ryzen CPUs. Higher frequency can degrade the performance but there are exceptions. 40V. We bumped the FCLK Frequency up to 1966MHz to keep the DRAM and FCLK Frequency on a 1:1 ratio to maintain the highest performance advantage. Make sure you keep FCLK 1:1 with MEMCLK- If you do this, you should top out at DDR4-3800 with 1900 FCLK (if you're lucky), but will probably end up with DDR4-3733 FCLK 1866. Your auto settings were correct. FCLK Frequency Auto Or Manual. 2v. In ZenTimings you can see that the DRAM frequency is exactly 1967MHz and FCLK and UCLK are also 1967MHz. 35V) and the problem still Jan 23, 2022 · So 2200MHz seemed like a reasonable goal, that would allow me to go up to 4400 MT/s on the RAM. So if I can run 3800MHz ram and 1900MHz FCLK on a Ryzen 5, 3600MHz ram on a Ryzen 9 should be no problem. 此时CPU和内存控制器之间的Data Fabric频率（FCLK）再减半，而内存控制器和内存之间的频率依旧保持不变。 Oct 28, 2021 · Our RAM was able to hit 3933MHz versus 3600MHz, maintaining the same Voltage and timings. So I would still take the plunge on it. 4000MHz - 14-15-15-35 (XMP default) 3866MHz - 14-15-15-34 3733MHz - 14-14-14-33 Here is the photo:. Do the 5600 have weak infinity fabrics or was it just the luck of the draw on the silicon lottery. FCLK in Zen 3 Architecture. DDR4-3200 16-20-40-1. RAM: 4 sticks of 16gb 3600 MHz cl 16 from Crucial DDR4 MB: Aorus X570 pro Wifi CPU: Ryzen 9 5950x Gpu: Msi RTX 3090 suprim x Below I'll list the exact settings I got enabled right now XMP Profile 1 DDR4-3600 16-18-18-38-58-1. Thanks all. 00v and vddp to 0. There may be negative scaling between 1. But then I upgraded to a 32GB 3600Mhz and here I had to make a tweak, had to raise DRAM voltage from 1. Dentro de la parte de «OC Tweaker» encontraréis, en la sección de DRAM, Infinity Fabric Frequency and Dividers. e. So when you raise the RAM speed to 3200MHz, the FCLK runs at 1600MHz, when you raise the RAM to 3600MHz, the FCLK runs at 1800MHz and so on. 4V) Jun 17, 2021 · XMP timinings at lower RAM frequency for G. Whether FCLK is stable has nothing to do with whether ram frequency is. 325V, RAM at 3600MHz, FCLK at 1800MHz, CPU Max Temp of 75. Hello there, I was lucky enough to get my hands on a 5900x and have been checking out parts while trying to get a GPU. Cause it is the lowest quality binned Ryzen 3rd gen CPU. 4v at this ram frequency). 35V), as well as FCLK Frequency (1800MHz), and UCLK DIV1 MODE (UCLK==MEMCLK) If you take your DRAM frequency over 1800 (DDR3600) you need to manually set the FClock to match it. I used to have 3600mhz ram (2x32gb) for which i'd set the FCLK to 1800mhz for a 1:1 ratio. AMD's website lists max RAM speed for Ryzen 9 5900X at 3200MHz, yet I see most (but not all) people/publications recommending the use of 3600MHz RAM. I only set the FCLK from 1600Mhz to 1800Mhz. FCLK Frequency For 3600mhz Ram Reddit. Also, he notices a weird result where FCLK at 1800 performs worse than FCLK at 1600 with 3200Mhz memory. May 18, 2022 · For optimal performance, your FCLK frequency should be half of your RAM clock speed. This was after adjusting the power management settings and increasing the DRAM voltages incrementally up to 1. ¡No lo confundáis nunca con el FCH BCLK que aparece justo arriba! ASRock. On Auto if you set DDR3602 the FClock will go to 901. Start by increasing it by 5-10 MHz. So if you have 3200mhz ram, the fabric runs at 1600mhz. FCLK can be higher than RAM speed but lower will make your latency go up and performance decline. Like others said, play with SOC and use Cinebench 20 to check differences. The voltages are a basically as high as recommended lowering them will decrease power consumption and temps for the io die. So i actually had tp lower RAM frequency from 3800MHz on ZEN 2 to 3600MHz on ZEN 3. What Is FCLK Frequency. (Not related to the 5800X3D, more related to my motherboard. 6 GB/s. Por eso influye Feb 18, 2020 · Pushing FCLK above ram frequency is a terrible way to judge if the ram frequency would be stable. It comes with timings of 16-18-18-38 CR 1T at 1. I have ONE profile selection under D. Not 4000MHz like Lisa said in presentation. (For example for 1900 FCLK, try to boot and test RAM at 3800MT/s 18-22-22-42, 1T with GDM enabled, at 1. Find out the best RAM frequency, UCLK and MCLK ratios, and the pros and cons of overclocking FCLK. It has nothing to do with how far ram can go, and usually Apr 19, 2022 · Expected ram speed/fclk Most Zen 3 can do infinity fabric/fclk of 1900, effective ram speed 3800. At 3600MHz I was able to tighten the timings fairly tight. 42V, then keep raising the frequency until it doesn't boot anymore. One more thing most ryzen cpus are not able to go above 1800mhz fclk. This is not 3600Mhz Frequency! We now add another one of those RAM modules and now have 2 RAM Modules; Both RAM Modules still run at 1800MHz, the frequency does not change Feb 14, 2021 · En este caso, en el menú denominado OC el FCLK Frequency se encuentra en la parte de configuración de la RAM (DRAM Setting). Nov 1, 2014 · DDR4-3200 is still the officially supported memory frequency on Ryzen 5000. GPU: RTX 3080 Strix OC | RAM: 32GB 举个例子：DDR4 3200MHz内存实际运行频率1600MHz，低于FCLK上限的1800-1900MHz，因此实际FCLK运行频率就是1600MHz. But when all four ram sticks are in slots, PC don't even post. P. 5C, VRM at 52C. Zen 3 architecture introduces a decoupling feature similar to Intel’s approach. So i had to set my RAM to 3600MHz to get 1:1 ratio FCLK-UCLK. 2000 MHz FCLK and 4000 MHz RAM is as high as you should ever go with Zen3. 0. JEDEC spec 3200 is not good though. The fastest FCLK you can achieve without WHEA or memory errors with 1:1 is the sweet spot. Messing around in my bios I decided to change my 3600mhz rated RAM frequency to 3666mhz and fclk to 1833, so far it's running fine but would i be better off just enabling xmp instead, or better yet taking the frequency and fclk as high as possible as opposed to enabling xmp? TL;DW:Going for high frequency is a waste of timeA difference between FLCK and UCLK adds like 8ns of latencyFCLK on most chips should max around 1900MHz so o Jun 2, 2020 · Start low like at 3600MHz, then go up slowly. Feb 16, 2023 · Hello, Last week I upgraded my RAM to Kingston Fury Renegade 16GB 3600Mhz CL16, and I turned on XMP profile, everything was working fine but yesterday I changed FCLK frequency to 3600MHz instead of 1800MHz by mistake. 4V or 1. I noticed when the FCLK was set to auto in the BIOS, the speed reported in HWInfo was 1600 and the UCLK was 900. 3 ABB) comments sorted by Best Top New Controversial Q&A Add a Comment Edit3: I ended up having to lower the frequency to 3533mhz. Very high MCLK frequency can mitigate the latency penalty of running UCLK = MCLK / 2. Jun 20, 2021 · Learn what FCLK frequency is, how it affects RAM speed and performance, and what should your FCLK frequency be for optimal results. Checked FCLK and it was 1800 so everything run fine although at Cl 18. Nov 10, 2020 · Infinity fabric at the moment goes to 1800MHz. By default if you run your RAM at speeds up to 3600 MHz the 1:1 memory to IF ratio will be used so your IF will be running at 1600 MHz if your memory is running at 3200 MHz (because the true frequency of DDR RAM is half of the the advertised speed (which should be measured in mega transfers not megahertz but not many people care about that these days What ever speed on decide to run your ram set your fclk to half of it. If the RAM is at 3200 MT/s then FCLK should be at 1600MHz. is set to Profile #1 in the BIOS. P" which is XMP , i've enabled that and selected the only available profile which is 3600Mhz Cl18 Jun 9, 2020 · For RAM frequency lower than 3200MHz it may be beneficial to set higher Infinity fabric than 1600 but you would have to experiment a little. And you're absolutely right in the end a lower frequency with tighter timings has less latency. 66MHz etc So, you don't really need to see the multipier on screenshots, it's obvious its 42. I have read in many reddit posts that users were not able to get a stable system with 1900/2000 FCLK and 3800mhz/4000mhz ram speed. Oct 12, 2019 · You should easily be able to hit 3200-3600MHz DRAM frequency with proper DRAM, so the FCLK will come in handy. for 3600 MHz RAM (MCLK = 1800 MHz) it runs best when UCLK and FCLK are also 1800 MHz. Oct 30, 2023 · FCLK is the Infinity fabric, that seems to need to be within a certain multiplier range of the MCLK - any value dividable by 0. FCLK Frequency For 2666mhz Ram. May 17, 2024 · For example, CL14 3200MHz RAM would be better for gaming than CL16 3600MHz RAM, so make sure to balance picking between both. Oct 3, 2020 · G Skill 3600 F4-3600C16 32 GB RAM (xmp profile - no other changes) My understanding is that for Ryzen 3000, FLCK should match the MCLK. 850v. Retailers have just marketed their RAM for how many transfers it can accomplish and DDR can do 2 transfers per clock cycle. My DJR can do 3733/16-19-8-20-30 Aug 31, 2022 · There's no "one size fits all" ideal fabric frequency. FCLK and UCLK are both 2,000 MHz. FCLK Frequency 1ghz. 2MH => UCLK Black part, bottom right: FCLK/UCLK: 1900/1066 Frequency and timings: 4266. So there is not point imo to buy ram above 3600mhz . I have yet to see a really solid, technical, authoritative argument for going with 3600MHz or for limiting oneself to 3200MHz. XMP (DOCP if ASUS) doesn't always set the infinity fabric to match your RAM. I'll try 3800MHz next. [option A1] After you're done with Step 1, reset BIOS to defaults, restart, enable the XMP profile for 3600 MT/s, set FCLK frequency to 1800 MHz, set SOC voltage to 1. DDR stands for double data rate, meaning the RAM is actually running at half of what it says it is (3600mhz = 1800mhz in reality). Use very loose timings with 1. 而当内存频率超过FCLK承载上限时，则按照2:1分频. O. 3900X All-Core 4. And RAM needs to be overclocked to reach its rated setting anyway- for instance a kit of DDR4-3000 would be running at 2133/2400/2666MHz out of the box, and would require an XMP/D. I have a 5600x in a Asus B550 that runs at 3800mhz 1:1. etc. For RAM clock rates below DDR5-6000, an average value is automatically set for Oct 13, 2020 · Awkwardly, I've done some adjustments at the FCLK Frequency and it seems to stabilized. So I loosened the timings a bit and I can do 4333 stable at CL20, but 4400 just isn't stable unless I drop to CL22. Depends on luck/the silicon lottery of the IMC on the ryzen chip, ram chips, and motherboard topology. I set it down to 1600 and Jan 13, 2021 · Infinity Fabric es un componente de las CPU Ryzen que facilita el control y la transmisión de datos a través de los diferentes componentes (CCX, cores, RAM…). Example. Corsair H150i Pro 360mm AIO, Asrock X470 Taichi 3. The specs don't tell the story. Adjust the FCLK frequency. . Jun 11, 2023 · FCLK, or Fabric Clock, is the frequency of AMD's Infinity Fabric, which affects data transfer between cores and memory. Same with other two ram sticks. D. 3 5V" In BIOS under MEMORY FREQUENCY this reads "DDR4-3200MHz" FCLK FREQUENCY reads "1600MHz" and yet I'm still only getting 2400MHz RAM frequency is measured in megahertz (MHz) or million cycles per second. Generally how high FCLK can go depends on how good your CPU's memory controller is, which is mostly silicon lottery. By suggestion, the ratio of RAM frequency to FCLK frequency should be 1:1. my Specs : CPUs : AMD Ryzen 5 5600g RAM : Team Delta 8x2 3600mhz Mobo : Gigabyte B550M DS3H in short, i play with APU only from Ryzen 5 5600g i don't have VGA. If that sounds complex, don’t worry! Just below the comparison list, we’ve included the best RAM choices depending on your budget level. C. FCLK Frequency For 4000mhz Ram. 3600 mhz it runs at 1800mhz. P overclock to actually reach 3000MHz. Jan 9, 2021 · Currently, I'm running a ASRock Taichi, 5950x and TridentZ 32GB (4x8) CAS-19 3600Mhz How do I maximize the performance in relation to my CPU and RAM? From what I understand, the FCLK and frequency of RAM should match to maximize the performance. I have HP V10 16GB (2x8GB) 3200MHz S8B. The only reason to go higher is to run a really high FCLK to offset higher latency when the MCLK:FCLK ratio isn't 1:1. Jan 9, 2020 · The Ryzen 5 3600 has a higher chance of running 3600mhz for sure. FCLK Frequency For 3000mhz Ram. I now have 2x48Gb Corsair 5600Mhz and whenever i try to sync the FLCK, meaning using 2800mhz, the PC doesn't boot anymore. but even if i set my ram into the default XMP Profile (3600MHz CL18 @1. 100v, set CLDO_VDDP to 0. Jul 12, 2021 · Stuck RAM in proper holes (A2 and B2), turned on DOCP 3600, frequency 3600 (second XMP on RAM) and it worked. These will be located in different places depending on your motherboard, but they’re often found under “Advanced Settings,” “FrequencySettings,” or something similar. Does the FCLK being higher than 1500 (3000/2) cause any problems? Nov 6, 2020 · 3600Mhz Is the sweet Spot, And running 1:1:1 is what you wanna do with Ryzen, So if you get 3600Mhz ram, You can run the Fclk at 1800Mhz, Its really not up to the ram to run the speeds its the motherboard/bios Here is a good video for anyone wanting to learn how ram works, There actually getting 2000Fclk to just about everyone now, Check for So I switched it back to 1800 and overclocked my ram to 3600mhz :D Reply reply It's also similar for me 3200MHz ram with auto FCLK 1800. People suggest 3000/2000/3000 is the dream settings for DDR5 6000, and it is. 66, FCLK frequency of 1833MHz At CL16-20-20-40. 95v, ProcODT to 34 on SR (single rank) and 40 on DR (dual rank), try to boot 1900fclk. For what I read, it should be 1600Mhz, since the advertised clock speed of the memories is 3200Mhz, but somehow they appear to be stabilized with FCLK 1800Mhz. Looking back, Ryzen 3000's FCLK typically hits a wall at 1,800 MHz, which means you can run the memory at DDR4-3600 and remain in 1:1:1 mode. Apr 30, 2023 · Hi I've switched from an AM4 PC to an AM5 PC. Click to expand Even after selecting the XMP profile to 3200 mhz and FCLK to both auto and 1600 mhz, I am still seeing the ram is running at 1330 mhz . Dec 13, 2023 · Eventually, discovering the optimum FCLK⁤ frequency for your system ⁣can result in a⁢ visible enhancement in‍ efficiency. For example I you are running 3600mhz ram set your fclk to 1800mhz. 5x, 2. 4v. 4MHz => 4266MT/s Uncore frequency: 1067. I could most likely bump the RAM frequency a big higher on CL22, but since the FCLK won't go any higher, I'd lose the 1:1 ratio. Of course i put ram sticks to slot #2 and slot #4 as is mention in I mean stock CPU/motherboard settings. g. This is the perfect balance of frequency and CAS latency. 4V. Not all chips can reach 1900 FCLK. On a 3000 series Ryzen, you might not be able to achieve 1800 on your FCLK without some kind of errors in Windows. If this is stable, then you ram is ok and the problem at 3600 is running your FCLK at 1800. I moved from 3700X to 5800X3D and my 16GB 3200Mhz ram worked without issues on XMP. I seem pretty stable at a 3600 mem, 1800 Fclk right now. This is not a good setting for performance but is for testing only. 3GHz Overclock @ 1. Edit 5 I thought I was going to leave this unsolved but i have ordered new ram sticks and have new information: My new ram sticks are Trident Z neos 16x2 32Gb CL184000MHz My XMP Default profile is DDR4-4000 18-22-22-42-64-1. I OC'ed my RAM yesterday but noticed my FCLK desychronized at anything past 3600MHz. Ahí podréis cambiar el FCLK. It operates at a 1:1 ratio with the memory clock, ensuring optimal performance. At DDR4-3600 this memory maintains the 1:1 FCLK Frequency with AMD Ryzen systems so the Infinity Fabric is not bottlenecked. Some select few can do 1933 (3866 RAM) or more, but this is VERY rare with actual stability. Getting 1900 FCLK and DDR4-3800 is probably the best result you can get on ryzen 3000, but that requires a lot of luck. I've seen reddit posts about some 3600's not able to run 3600mhz RAM. I kept having the same issues so backed the RAM down, set the voltages back to default DOCP, and haven't had an issue since. For example, if the memory runs at 3200MHz, get the fclk frequency for 3600mhz ram. 05v, ccd to 1. En el caso de los Ryzen de las series 1000 y 2000, el FCLK no puede ser controlado de manera independiente, ya que va en relación con la velocidad de la memoria RAM. i just use the XMP to boost the RAM to 3600mhz, but when i play a games about 10-30 minutes Jun 11, 2023 · Find the FCLK settings. XMP) unless there's something wrong with the memory. Running FCLK at 1800 with a 3000MHz ram. Nov 4, 2022 · That my two sticks of ram are indeed running at a total of 2400MHz. You should get 3800MHz and a 1900 FCLK with no problems though. Past 3600MHz, FCLK should be 1:1 with RAM speed. Jul 8, 2019 · Instead with DRAM Frequency fixed at 4333 MT/s, increasing FCLK from 1733 MHZ to 1800 MHz immediately shows a gain of 1. Just want to get the highest possible memory frequency and then work on the timings. 15v and 1. Whether you’re a player searching for ⁢that one-upmanship, a material developer preferring ⁤smoother workflows, or a power user desiring a snappier system, understanding and enhancing the FCLK frequency is crucial. FCLK Frequency For 2400mhz Ram. Decent 3200 RAM, and anything faster than that, is generally JEDEC 2133-2666 with an XMP profile. 35V System Memory Multiplier Auto 36. Oct 13, 2021 · so, i just build my first computer. The ram being the limiting factor there I believe. Sep 27, 2022 · The FCLK remains capped at 2000 MHz, at least as long as it is not changed manually. For 3200 MT/s RAM, the memory controller will usually run at 1600MHz (UCLK = MEMCLK). For 3600 rated RAM, your FCLK (Infinity Fabric) would be set to 1800 . 33 = 3200 MT/s, tRC is 51, tRTP is 8, tFAW is 23 3200 ratio and 100 MHz BCLK Frequency -> RAM frequency is 100 MHz x 32. Soc voltage can help with fclk, shouldn't exceed 1. Try 3666, 3733, and finally, 3800. I don't know if its the qvl that's the problem running a qvl 3200 kit on a asrock x570m pro 4 set the fclk to 1500 for me. What should FCLK frequency be for Hi, something really strange happened. Our CPU can do 1:1 at around 3600MHz DRAM clock and 4. On my 5900x, 1800mhz run great, but on my 2400g, I had to take the ram down to 3333mhz because the fabric couldn’t handle it. At a given frequency, the lowest latency is achieved by having all three values the same. Everything above 3600MHz RAM speed increases latency on ZEN 3 at the moment. Jun 25, 2022 · 2133 ratio and 150 MHz BCLK Frequency -> RAM frequency is 150 MHz x 21. May 18, 2023 · What Is The FCLK Frequency. Looking back, Ryzen 3000's FCLK typically hits a wall at 1,800 MHz, which means you can run the memory at DDR4-3600 Bought 3600MHz Trident-Z last generation, it OC's to 3733MHz without a hitch. Some people can manually get to 3800/1900 while other can't even get to 3666/1833. Would the best way be to just turn on XMP and set the FCLK to half of what the RAM frequency is? Aug 19, 2021 · FCLK ideally runs at half the memory speed and in sync, as a general rule. 25x (1. This is because there is a latency hit when the FCLK and MemCLK are not divisible / proportional, as data has to be waiting for the next "tick" to transfer across the pipeline. No other memory tuning was done. Also, it is worth noting that FCLK, UCLK, and MEMCLK are synchronized together which means that they will also be synced to 1800 MHz as well. I put two ram sticks to motherboard memory slots and I set in bios only D. Only the matching sticks are anywhere close to identical. Esoteric note: People often refer to DDR4-3200 as being 3200 MHz however, in reality, the real frequency of the RAM is only 1600 MHz. Which reads "D. Find out max FCLK that your CPU can achive without WHEA errors. Higher frequency means more cycles per second, which means better performance. started using a latency calculator a few hours ago and I'd get better latency with lower RAM clock speed with tighter timings. 3600 RAM is the sweet spot for performance and ease of getting running with just XMP for 5000 series Ryzen. Save and exit. We would like to show you a description here but the site won’t allow us. (XMP said it should be 17). Oct 28, 2021 · It’s a great kit for any AMD Ryzen system or Intel system using DDR4. FCLK Frequency For 3200mhz Ram Reddit. You can increase your FCLK frequency to get more performance out of your RAMs Feb 8, 2023 · That RAM Module runs at 1800MHz Frequency (not at 3600mhz!) That RAM Module transfers 3600mt/s (two transfers per clock, 1800 * 2), hence the “3600” in its Product name. I used TestMem 5. Nov 6, 2023 · If youd like to take the lazy route just buy a generic 3200c16 or 3600c18 kit and be done with it As for ram oc ive heard that the 5800x3d has a better imc so you should be running around 4000mhz but youll wanna test max fclk first so find a max stable fclk and thats your ideal ram clock, be it 3866, 4000, 4133, etc. to XMP profile and FCLK to 2000Mhz and PC ran without errors. Probably less than half of chips can. tuning ram down to 3200 it booted again but i just couldnt get it to boot at 3600 / 1800 mhz fclk what i tried then, was bumping up soc voltage a bit, which helped, now it could boot 3600mhz (i didnt touch soc voltage on my 5800x at all, dont know if it was higher by default) getting whea errors in hwinfo on that settings though Jul 8, 2019 · Instead with DRAM Frequency fixed at 4333 MT/s, increasing FCLK from 1733 MHZ to 1800 MHz immediately shows a gain of 1. With AMD Ryzen you want to set the FCLK half of your memory speed, so when using, for example, 3600mhz then set the FCLK to 1800mhz. (you could leave RAM on full auto settings during FCLK tests) Try to increase RAM frequency up to your max FCLK. FCLK is the clock of the Infinity Fabric inside your CPU. 66. Jun 10, 2021 · Running FCLK as high as possible with lower memory clocks does boost performance indeed, however you are better at 1:1 ideally at 1:1 you get the best Latency AND the best performance for example i have 3600mhz ddr4 DIMMS, i have overclocked these to 3800Mhz and set the FCLK and MCLK to 1900mhz - about the highest you can expect on ryzen 3000 Thank you! Ah so yeah AMD 5800x has a 1800mhz FCLK limit, or around that range. 00 Just a quick question. For the perfect balance between performance and stability, it's usually best to stick closer to 3600 CL16 and an 1800 MHz FCLK. Easy way to do this, set DOCP, the nmanually set FCLK to 1600 which you know works. At that point, start tightening timings. Also realize that '3600MHz' and '4000MHz' run at memory clock frequencies of 1800MHz and 2000MHz respectfully. Feb 24, 2021 · Yeah it should be perfectly stable with DOCP mode (i. That seemed wrong, so I went into the bios to manually change the FCLK to 1800 and it would not post. GPU: RTX 3080 Strix OC | RAM: 32GB Jun 4, 2021 · Not quite. You can manually set RAM speeds beyond 3600MHz but stability isn't guaranteed. 4. The chiplets that make up that ram are made from different sheets of silicon, which has differing amounts of impurities, and those impurities strongly affect the Secondary and Tertiary timings (that's the 40+ numbers you don't normally see). Dec 31, 2020 · Hi just bought a couple of Corsair Vengeance LPX 3600Mhz CL18 Ram Sticks, and installed on A2 & B2 slots of my Asus Prime B450m-A, my cpu is Ryzen 3400G in BIOS, there is an option called "D. After selecting a frequency then save these settings in the BIOS and reboot. Ryzen CPUs will default to a value that's dependent on the speed of your RAM. Just remember to set FCLK to 1800 to match it. You want to match the FCLK frequency to the actual frequency of your RAM, in this case 1800mhz. E. 00 FCLK Frequency 3600MHz UCLK Mode Auto Feb 25, 2017 · Lower your memory frequency for 1:1 FCLK:Memory, if needed. 0 to test it, and it was ok. So memory running DDR@3200 will have FCLK of @1600. 2v (silicon lottery dependent) Nov 13, 2020 · If we take the same 3800 spec and just increase the frequency to DDR4-4000, which right now in the absence of 2000 MHz FCLK support decouples from a 1:1 ratio with the Infinity Fabric, we actually Jun 18, 2020 · AMD switches its onboard Unified Memory Controller frequency (UCLK) to 1/2 of the DRAM data rate whenever DDR4-3600 is exceeded, and further protects controllers on the I/O die from instability by Jan 27, 2020 · On MSI motherboards as tested, the FCLK frequency and UCLK ratio (“UCLK DIV1 MODE”) are found in the “DRAM Setting” portion of the OC menu. I'd set voltage to 1. ceegefl kqvcm tsxr gyleeiu zohbbdq sfrskzs nyg hjae oaw yxduk