Is it useful to go from 8600k to 5600x or more for DCS VR ?

[dureiken]

Hi guys and experts !

 

I actually have a 8600k@5.2ghz and a 2080ti, planning to go to a 6800xt or 6900xt.

 

I am wondering if for DS in VR it's useful to upgrade my CPU too. I see a lot of benchmarks but CPU are at different frequencies.

 

My 8600k runs pretty fast, even if I go with a 5600x or 5800x @5.0ghz, do you think I will see any difference or the graphic card and DCS engine is still the limit and I will loose money for nothing ?

 

thanks for your advices

[dureiken]

no idea ? :(

[Svsmokey]

The conventional thought on these forums is that VR performance is 

limited by the gpu , not the cpu .

Even in 2D , the gain from a 8600k @ 5.2 ghz to a 5600 is micro-minimal if any at all , and would hardly be worth a new cpu and motherboard .

 

[shoovie_groove]

I went from a 3800x to 5800x to 5950x. I saw improvements at each upgrade within DCS

[ignition22]

On 5/9/2021 at 5:48 AM, Svsmokey said:

The conventional thought on these forums is that VR performance is 

limited by the gpu , not the cpu .

Even in 2D , the gain from a 8600k @ 5.2 ghz to a 5600 is micro-minimal if any at all , and would hardly be worth a new cpu and motherboard .

 

Strong disagree. Run any complex multiplayer or single player mission and using fpsvr the cpu is often struggling. Why do you think people are saying potential multi threading with vulkan is going to be an improvement if there is no cpu performance limitations? 

[dureiken]

On 5/10/2021 at 11:49 AM, ignition22 said:

Strong disagree. Run any complex multiplayer or single player mission and using fpsvr the cpu is often struggling. Why do you think people are saying potential multi threading with vulkan is going to be an improvement if there is no cpu performance limitations? 

 

Yes but with actual engine, it's only single thread, isn'it ? so only one core CPU performance ?

 

On 5/9/2021 at 11:21 PM, shoovie_groove said:

I went from a 3800x to 5800x to 5950x. I saw improvements at each upgrade within DCS

 

In VR ? what is your HMD and graphic card ? in term of fps or smooth ?

 

THanks

[AlpineGTA]

I recently upgraded my CPU (I kept the same GPU) and on instant action missions with a lot of AI units, I went from FPS that was often in the teens and running like a slide show to a smooth and very playable 40+ FPS, so it was a big improvement for me. But I imagine any improvement you might see will depend on how big an upgrade you're making. I went from a relatively ancient i7-3770 to an i5-11600K.

[dureiken]

1 hour ago, AlpineGTA said:

I recently upgraded my CPU (I kept the same GPU) and on instant action missions with a lot of AI units, I went from FPS that was often in the teens and running like a slide show to a smooth and very playable 40+ FPS, so it was a big improvement for me. But I imagine any improvement you might see will depend on how big an upgrade you're making. I went from a relatively ancient i7-3770 to an i5-11600K.

yes a huge CPU upgrade

 

in my case, same frequency or maybe more for my 8600k, single core performance almost the same ? (how to test ?)

 

thanks

[AlpineGTA]

Yes, that's what I mean. I don't know, you might not see much improvement in your case.

[Lurker]

I would hang on to that CPU. 5.2 Ghz stable overclock is pretty high and it's not really that old. Get a graphics card first and see if you need to go for a full upgrade once you get your GPU sorted first. 

[Bearskin]

So two years ago I was contemplating to build a new computer or just swap my 970 for a 2080 for DCS world, I opted for the 2080 and saw a huge boost in performance. 2 weeks ago I finally built a new rig going from a 3770K and 16 gig 1600 memory to a 9900k and 32 gig 3600 memory. 

 

Here is what I noticed, DCS world there is no difference at all as far as I can tell between my old rig and my new rig, single player. multi player both to my eyes play exactly the same.

 

On the other hand, I also play Assetto Corsa Competizione, my old rig would struggle on low settings and look like I had been poked in both eyes with a stick, dropping to low 20's frame rate. Now my new rig I have everything on high and ultra and am hitting 90 FPS around the track with an occasional drop to high 70's. 

 

So if you only play DCS world, then IMO the CPU doesn't matter, as I said going from a 9 year old 3770k to a 9900k shows no difference, but if you also play other games, then the CPU upgrade is a must.

 

[dureiken]

thanks for your feedback bearskin and others

[Svsmokey]

On 5/10/2021 at 4:49 AM, ignition22 said:

Strong disagree. Run any complex multiplayer or single player mission and using fpsvr the cpu is often struggling. Why do you think people are saying potential multi threading with vulkan is going to be an improvement if there is no cpu performance limitations? 

 

Because DCS does not effectively use the cpu at present . I went from a i5-6500 to a 9700k and saw very little-to-no performance/graphics improvement . When i (some 10 months later) replaced my  1070 with a 6800xt , the difference was massive . 

[Wali763]

Hi.

 

Saw this topic just now. Im not around much in the VR-forum, since Im on 2D.

 

I changed from a 9600k (quite the same as 8600k) at 5Ghz to a 5600X and saw only little change. In CPU-limited situations maybe a small gain in fps. Maybe +5fps on the SC with lots of planes around. The rare stutters in some scenarios I had, were not resovled by this upgrade. Also had tried 5,2Ghz on the 9600K before with no change. Only going from a 2070Super to a 6700XT resolved that stutters, which is strange since those scenarios all were CPU-limited. Maybe SAM or the supposed smaller overhead of AMD-GPUs??

 

But I know other people that say, they had good gains going from a 8700K to a 5900X.

 

I guess, different configurations are too different to make a good judgment. And the CPU is also only one part of the system.

 

When I still had the Rift S I often used fpsVR, which showed the frametimes for CPU and GPU seperately. I mostly had (tuned to 25ms framteimes) the CPU in the green or yellow, while my GPU was red, red and red.... So a new CPU would not have helped much, only in select CPU-limited situations.

 

But in general I still keep saying: investing lots of money in hardware for DCS will only give you a small in increase in experience.

 

If you look at the fps, you may see a small increase, but does if overall increase your experience? Will going from 4x MSAA to 2x MSAA or from 150%SS to 120%SS completly ruin DCS for you?  If you dont conentrate on those small changes, I guess not. But thats only my approach.

 

 

Edited May 23, 2021 by Wali763

[dureiken]

OK thanks all for your help

 

will just go to a 6900XT and it will be fine

[Thanatos31]

On 5/23/2021 at 10:20 AM, Wali763 said:

Hi.

 

Saw this topic just now. Im not around much in the VR-forum, since Im on 2D.

 

I changed from a 9600k (quite the same as 8600k) at 5Ghz to a 5600X and saw only little change. In CPU-limited situations maybe a small gain in fps. Maybe +5fps on the SC with lots of planes around. The rare stutters in some scenarios I had, were not resovled by this upgrade. Also had tried 5,2Ghz on the 9600K before with no change. Only going from a 2070Super to a 6700XT resolved that stutters, which is strange since those scenarios all were CPU-limited. Maybe SAM or the supposed smaller overhead of AMD-GPUs??

 

But I know other people that say, they had good gains going from a 8700K to a 5900X.

 

I guess, different configurations are too different to make a good judgment. And the CPU is also only one part of the system.

 

When I still had the Rift S I often used fpsVR, which showed the frametimes for CPU and GPU seperately. I mostly had (tuned to 25ms framteimes) the CPU in the green or yellow, while my GPU was red, red and red.... So a new CPU would not have helped much, only in select CPU-limited situations.

 

But in general I still keep saying: investing lots of money in hardware for DCS will only give you a small in increase in experience.

 

If you look at the fps, you may see a small increase, but does if overall increase your experience? Will going from 4x MSAA to 2x MSAA or from 150%SS to 120%SS completly ruin DCS for you?  If you dont conentrate on those small changes, I guess not. But thats only my approach.

 

 

 

Sorry for the slight OT post - but do you know if the RX6700xt runs the Reverb G2 in 90Hz ? 

[dureiken]

Hi

 

it's not VR but I made some benchmark to see CPU frequency influence on FPS. I tried 4.6, 4.8 and 5.1Ghz, with my 2080Ti almost all settings at max. I made some tests with SSAA 1 and others SSAA 1.5.

 

 

Here are the results :

 

 

To sum up : 4.6GHz or 5.1GHz = 2080 Ti bottleneck.

Edited June 29, 2021 by dureiken

[cordite]

On 5/8/2021 at 12:48 PM, Svsmokey said:

The conventional thought on these forums is that VR performance is 

limited by the gpu , not the cpu .

Even in 2D , the gain from a 8600k @ 5.2 ghz to a 5600 is micro-minimal if any at all , and would hardly be worth a new cpu and motherboard .

 

Yes, but DCS in general is CPU bound. That said, If I had an 8600k @ 5.2 ghz, I might just hold out for the upcoming ddr5 stuff.

[C3PO]

Going multi-core will significantly improve the experience for many. I think with the introduction of a campaign engine too it'll be necessary as that could well be quite a resource hog. At the moment - if I understand it correctly - DCS uses two cores, one for the sound and one for the sim (ie everything else). Mitigating drops in FPS in high CPU situations (like lots of players / units etc...) will be a godsend.

 

As for the OP, I think the performance improvement balance is roughly 70/30 split between GPU and CPU.

[dburne]

14 hours ago, cordite said:

Yes, but DCS in general is CPU bound. That said, If I had an 8600k @ 5.2 ghz, I might just hold out for the upcoming ddr5 stuff.

 

Agreed.

[dureiken]

In my tests we cant say that DCS is CPU bounded, bottleneck is clearly the GPU in high resolution/settings