Question Will this server CPU bottleneck rtx 4070?

[yargd]

I'm currently have a 2 x epyc 48 core cpu server with a gtx960. I'm planning to upgrade the GPU. I'm wondering if it's worth to upgrade with a gaming CPU for best performance of the 4070. Thank you.

 

[kanewolf]

I'm currently have a 2 x epyc 48 core cpu server with a gtx960. I'm planning to upgrade the GPU. I'm wondering if it's worth to upgrade with a gaming CPU for best performance of the 4070. Thank you.

You are slowing that CPU significantly by having only dual channel memory. EACH of those CPUs has 6 channel memory controllers. So, the optimum number of DIMMs with two CPUs is 12!!!
Your text says "EPYC" (AMD) server CPUs but your picture says Intel Xeon. What do you actually have ? The max single core speed for those CPUs is 3.7Ghz. Will that slow a 4070? Depends on what you are trying to do. Game? Yes.
With that many physical CPUs, I would disable hyperthreading and run on the physical CPUs ONLY.

 

[hotaru.hino]

If you're aiming for high FPS, like 400+ in Counter-Strike or something, then many-core server CPUs aren't going to cut it. But if you were going to say run games at 4K with all the fixings, then the CPU has less to do.

 

[Order 66]

You are slowing that CPU significantly by having only dual channel memory. EACH of those CPUs has 6 channel memory controllers. So, the optimum number of DIMMs with two CPUs is 12!!!
Your text says "EPYC" (AMD) server CPUs but your picture says Intel Xeon. What do you actually have ? The max single core speed for those CPUs is 3.7Ghz. Will that slow a 4070? Depends on what you are trying to do. Game? Yes.
With that many physical CPUs, I would disable hyperthreading and run on the physical CPUs ONLY.

why disable hyperthreading? That will not fix the problem that server CPUs have with gaming (low clock speeds) and the fact that games won't be able to utilize that many cores.

 

[hotaru.hino]

why disable hyperthreading? That will not fix the problem that server CPUs have with gaming (low clock speeds) and the fact that games won't be able to utilize that many cores.

Some games, like Starfield on Intel CPUs, actually have issues with it, but this is more of an outlier than a rule.

 

[kanewolf]

why disable hyperthreading? That will not fix the problem that server CPUs have with gaming (low clock speeds) and the fact that games won't be able to utilize that many cores.

48 physical cores is VERY difficult to fully utilize. Enabling hyperthreading just makes the problem worse.
I never said it would "fix" using those CPUs in a gaming oriented build.

 

[yargd]

You are slowing that CPU significantly by having only dual channel memory. EACH of those CPUs has 6 channel memory controllers. So, the optimum number of DIMMs with two CPUs is 12!!!
Your text says "EPYC" (AMD) server CPUs but your picture says Intel Xeon. What do you actually have ? The max single core speed for those CPUs is 3.7Ghz. Will that slow a 4070? Depends on what you are trying to do. Game? Yes.
With that many physical CPUs, I would disable hyperthreading and run on the physical CPUs ONLY.

Thanks for the detailed answer. My mistake. My CPU is Intel.
I will do a lot of video editing, production, old blurry video restoration. How many percent do you think would help if I have 12 sticks of RAMs and overclock to 3.7Ghz? 50%, 75%, 100% better?

I'm planning to get a 4070 for max video production performance with a 4070. Final question, is it worth to spend extra $1000 to upgrade CPU, MB, RAM, and 4070 to max out the performance?

 

[kanewolf]

Thanks for the detailed answer. My mistake. My CPU is Intel.
I will do a lot of video editing, production, old blurry video restoration. How many percent do you think would help if I have 12 sticks of RAMs and overclock to 3.7Ghz? 50%, 75%, 100% better?

I'm planning to get a 4070 for max video production performance with a 4070. Final question, is it worth to spend extra $1000 to upgrade CPU, MB, RAM to max out the 4070?

It is not likely you will overclock Xeons. Video editing is a memory intensive activity. Having all the memory channels populated maximizes that performance. I have no idea what performance difference you will see.

 

[yargd]

It is not likely you will overclock Xeons. Video editing is a memory intensive activity. Having all the memory channels populated maximizes that performance. I have no idea what performance difference you will see.

Is it worth to spend extra $1000 to upgrade CPU, MB, RAM, GPU to max out the 4070?

 

[kanewolf]

Is it worth to spend extra $1000 to upgrade CPU, MB, RAM, GPU to max out the 4070?

Your video performance will improve from the 960. If you want to spend money, I would recommend getting 12 matching DIMMs for your existing motherboard.

 

[yargd]

Your video performance will improve from the 960. If you want to spend money, I would recommend getting 12 matching DIMMs for your existing motherboard.

Do you mean the same DIMMS as clock speed, size, brand, or all?

 

[kanewolf]

Do you mean the same DIMMS as clock speed, size, brand, or all?

Yes. It is ALWAYS best to get the same RAM. It is most likely you will buy used RAM so I would try to get 12 of exactly the same. Either 12 x 8GB or 12 x 16GB.

 

[yargd]

Yes. It is ALWAYS best to get the same RAM. It is most likely you will buy used RAM so I would try to get 12 of exactly the same. Either 12 x 8GB or 12 x 16GB.

@kanewolf I got 4 more sticks of ram and I notice a little boost. I currently have (8 sticks total). My MB is only support Quad Channel memory technology.

If I get 4 more to use 6 channel memory of the CPU, can my MB utilizes 6 channel speed?

https://www.asrockrack.com/general/productdetail.asp?Model=EP2C621D16-4LP#Specifications

 

[kanewolf]

@kanewolf I got 4 more sticks of ram and I notice a little boost. I currently have (8 sticks total). My MB is only support Quad Channel memory technology.

If I get 4 more to use 6 channel memory of the CPU, can my MB utilizes 6 channel speed?

https://www.asrockrack.com/general/productdetail.asp?Model=EP2C621D16-4LP#Specifications

It depends on exactly which Xeon CPU you have. You have been unclear about EXACTLY what hardware you have....
So which Xeons do you have ?

 

[yargd]

It depends on exactly which Xeon CPU you have. You have been unclear about EXACTLY what hardware you have....
So which Xeons do you have ?

Intel Xeon Platinum 8160

Intel® Xeon® Platinum 8160 Processor (33M Cache, 2.10 GHz) - Product Specifications | Intel

Intel® Xeon® Platinum 8160 Processor (33M Cache, 2.10 GHz) quick reference with specifications, features, and technologies.

www.intel.com

 

[kanewolf]

@kanewolf I got 4 more sticks of ram and I notice a little boost. I currently have (8 sticks total). My MB is only support Quad Channel memory technology.

If I get 4 more to use 6 channel memory of the CPU, can my MB utilizes 6 channel speed?

https://www.asrockrack.com/general/productdetail.asp?Model=EP2C621D16-4LP#Specifications

The memory controller is in the CPU. So if you have 6 DIMMs per CPU the CPU will use all six. Will that be 10% faster? I don't know. You have to benchmark your software to see what the difference is. You have so many cores with dual 24 core CPUs that it can be difficult to keep them all busy.