3600mhz ram not working

[hunuman]

3950x processor
rtx titan gpu
x570 extreme motherboard
63.9gb ram(16gb x4 kits)
enable profile xmp 1 3600
profile 2 3200mhz works perfectly.

got a replacement still the same thing happens :(

[xSOSxHawkens]

Probably need to give a bit more voltage than specified to both the memory and the controller. Running 4 DIMMs has always carried with it the risk of stability on the high end, and running such heavilly packed stick (such high capacity) means that not only are you having to push 4 sticks, but each one has *way* more IC's than a regular single rank DIMM would.

No at all surprised that you are seeing this with the number of stick combined with raw ammount present.

If you can hold the 3200mhz then you can likely push 3600 with voltage *or* you could opt to run at 3200 and just tighten down the timings a bit to make up for the slight loss in raw throughput. Should perform quite similar to 3600 with slightly loser timing.

[Edifier]

https://www.amd.com/en/products/cpu/amd-ryzen-9-3950x

I think it only supports up to 3200MHz

Look for
System Memory Specification 3200MHz

I've read about earlier Ryzen CPU that seems to have max speed limit on RAM.

[r.linder]

Edifier の投稿を引用：

https://www.amd.com/en/products/cpu/amd-ryzen-9-3950x

I think it only supports up to 3200MHz

Look for
System Memory Specification 3200MHz

I've read about earlier Ryzen CPU that seems to have max speed limit on RAM.

Zen2 supports up to 3800 MHz with the infinity fabric. The memory spec is not a max supported speed.

[Mad Scientist]

Mine supposedly supports 2667 but its rated for 3600, and is correctly set to such since the board supports it as well. As long as all the timings, freq and voltage is correct it typically takes without issues.

What did you replace, the mobo or cpu? Either way you should be able to hit 3600.

[Irondog]

You've got to get into the bios and tweak the settings to get it to run at that speed. I believe that's OC'd. Google that ♥♥♥♥ already or check your Mb website/manual.

[SoldierScar]

Use Ryzen DRAM Calculator, it might give you a safe preset with timings that will work, but you gotta fill all the right information about your memory, so you might wanna watch this tutorial.
https://www.youtube.com/watch?v=KOqhyVNPhaM&t=481s

[AdahnGorion]

Edifier の投稿を引用：

https://www.amd.com/en/products/cpu/amd-ryzen-9-3950x

I think it only supports up to 3200MHz

Look for
System Memory Specification 3200MHz

I've read about earlier Ryzen CPU that seems to have max speed limit on RAM.

This

Also people do the crazy mistake of thinking on MHz matters... then they have awful in CAS Latency..... ohh well..

[hunuman]

Darkie の投稿を引用：

Edifier の投稿を引用：

https://www.amd.com/en/products/cpu/amd-ryzen-9-3950x

I think it only supports up to 3200MHz

Look for
System Memory Specification 3200MHz

I've read about earlier Ryzen CPU that seems to have max speed limit on RAM.

This

Also people do the crazy mistake of thinking on MHz matters... then they have awful in CAS Latency..... ohh well..

mine supports 4400 mhz speed(i have the best motherboard in market right now)

i needed to increase voltage to 1.350V from 1.200V

[r.linder]

Darkie の投稿を引用：

Edifier の投稿を引用：

https://www.amd.com/en/products/cpu/amd-ryzen-9-3950x

I think it only supports up to 3200MHz

Look for
System Memory Specification 3200MHz

I've read about earlier Ryzen CPU that seems to have max speed limit on RAM.

This

Also people do the crazy mistake of thinking on MHz matters... then they have awful in CAS Latency..... ohh well..

As I said before, Ryzen's current limit for 3000 series is 3800 MHz (1900 MHz FCLK), anything higher breaks a 1:1 ratio with the infinity fabric clock (FCLK) and has no benefit or worsens performance than 3800 MHz.

Latency doesn't have a real impact for what most Ryzen users are doing with their CPUs. The difference between 3200 CL14 and CL16 is less than 1% in most games, and the difference in multi-threaded workloads depends on the specific load and how it handles memory.
Otherwise it's no different from Intel; 3600 CL18 will perform the same as 3200 CL16 in games but still outperforms 3200 in workloads that benefit from faster DRAM frequency.

That being said, it depends on the motherboard as well, as 300 series motherboards struggle to go above 2933~3000 MHz with VERY few exceptions. 400 series motherboards struggle maintaining RAM frequencies above 3200 MHz without higher voltage and/or tweaked timings.
X570 has the easiest time with high frequency RAM, but Ryzen is still picky, and even Intel systems have had issues running 3600 CL16 XMP, because the issue lies with the RAM itself; 3600 CL16 with typical CL16 timings is difficult to pull off consistently, it takes a higher quality bin to get the timings they run to work at only 1.35v as most kits often need more than that, especially RGB kits as they draw a bit more power for the LEDs.

[Irondog]

Darkie の投稿を引用：

Also people do the crazy mistake of thinking on MHz matters... then they have awful in CAS Latency..... ohh well..

That's so true. I saw a post the other day someone thought it because they're cpu and memory clock was different that it was causing lag in they're games. I try hard not to laugh at anyone.

There was a time when clock speed on cpu's was everything but I guess in the past ten yrs or so that's changed a lot with multi-cores, bus speeds, L1&L2 cache etc.

Honestly the difference in gaming performance is gonna be small in a memory upgrade I don't know why people bother. Unless you've just got some really slow ram. Chances are you won't see a difference at all.

I can find better things to waste my money on. Like a new M2 drive so I can put some of these space hogging games on.

[Bad 💀 Motha]

Edifier の投稿を引用：

https://www.amd.com/en/products/cpu/amd-ryzen-9-3950x

I think it only supports up to 3200MHz

Look for
System Memory Specification 3200MHz

I've read about earlier Ryzen CPU that seems to have max speed limit on RAM.

You don't go by cpu support, you go buy motherboard support, which is always going to dictate what ram can work and run at, never the cpu.

The chosen ram probably just doesn't have good support on that motherboard as far as the 3600mhz goes.

IDK why people are buying ram above 3200mhz though. It won't do anything for you.

[_I_]

the imc on the cpu can be overclocked alot
amd/intel just gave them a number
if the mobo has higher multi (oc) it can do it

[Edifier]

Bad 💀 Motha の投稿を引用：

You don't go by cpu support, you go buy motherboard support, which is always going to dictate what ram can work and run at, never the cpu.

The chosen ram probably just doesn't have good support on that motherboard as far as the 3600mhz goes.

IDK why people are buying ram above 3200mhz though. It won't do anything for you.

Except AMD CPU have a limit on the RAM speed they can use. Intel does not.

But okay Motherboard decide the speed but AMD plays differently.

Also you get a lot of out your RAM with Intel CPUs when you throw in some high speed ones. Just enabling the XMP profile can already yield a big difference in many games.

[r.linder]

Edifier の投稿を引用：

Bad 💀 Motha の投稿を引用：

You don't go by cpu support, you go buy motherboard support, which is always going to dictate what ram can work and run at, never the cpu.

The chosen ram probably just doesn't have good support on that motherboard as far as the 3600mhz goes.

IDK why people are buying ram above 3200mhz though. It won't do anything for you.

Except AMD CPU have a limit on the RAM speed they can use. Intel does not.

But okay Motherboard decide the speed but AMD plays differently.

Also you get a lot of out your RAM with Intel CPUs when you throw in some high speed ones. Just enabling the XMP profile can already yield a big difference in many games.

Regardless of there being a limit on AMD's side and not Intel's (sort of, there still is, you just don't understand that), there comes a point where there's diminishing returns. For both Intel AND AMD CPUs, there is a huge diminishing return for gaming above 3000~3200 MHz. The difference for Intel between a cheap 3200 CL16 kit and a kit that can overclock above 4000 MHz in games is small and not at all worth the price.

In addition, motherboards will not run a DRAM frequency above that of what they support, and locked motherboards on Intel's side of things will not run at a frequency above the listed memory specification on Intel's site; so if the CPU's memory spec is 2666, and you put the CPU on a locked motherboard, RAM will never be faster than 2666. (I'm not sure if this is true for AMD because next to nobody is using A320 because it's crap value compared to B450)

Again, anything above 3200 MHz has little to no benefit. You have to have crazy expensive RAM that runs well above what most people would ever consider to have a "big" difference. GamersNexus did tests on such RAM, and it wasn't even that good for the price because the RAM is really costly and made for tweaking. If you want to spend way more on higher speed memory just to get every single FPS point, be my guest, but nobody cares that much.
https://www.youtube.com/watch?v=kP9F0h7qP_g
https://www.youtube.com/watch?v=D_Yt4vSZKVk
https://www.youtube.com/watch?v=-bvr2NAI2HQ
https://www.youtube.com/watch?v=vbHyF50m-rs