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Old 01-09-2019, 12:30 AM   #1
1Wolf
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Default CPU Choice for DCS Build

I'm planning a new machine for playing DCS using the Oculus Rift (Other gaming as well, but primarily DCS). My current system is a 3770K overclocked to 4.4 with a 1080TI and I still have to turn down so much detail in DCS with the rift that I've stopped playing until I can build a new machine. Its playable and I can get "acceptable" frame rates but I'm just tired of turning things down and want to see some more eye candy. The 3770K & 1080TI seem to still run pretty strong for most games but DCS in Oculus VR is very demanding. I really need FPS. I need all the performance I can get.

I wanted to go with a 9900K. Would the 9900K be a good choice for my uses? Or would the additional cores cause me too much heat and limit the speed of the chip too much? I'd be using 360 or 280 AIO but I've read that the 9900K puts out a lot of heat when overclocking and I'm guessing I'd likely have to overclock to get all the performance I can (I don't want to hurt the longevity of the chip too much though as I tend to keep a build for 4-5 years).

Or maybe there is a way better solution that will be out in the next month or so?

Some have suggested the 9700K instead of the 9900K suggesting that it might overclock better due to less heat but I'm not sure if thats true or not. Its been since 2012 that I built a machine last.

Price is not an object so I wouldn't be basing my CPU choice on saving a few bucks here or there.
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Old 01-09-2019, 01:05 AM   #2
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id go 9700k ... hell im still rocking a 2600k and flying just fine. get a good mobo snd cooling and youll never regret any of those k chips
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Old 01-09-2019, 01:07 AM   #3
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Um I just upgraded to a 2080Ti from a 1080Ti and my CPU can still easily push the GPU to the wall having said that the gains are really mostly eye candy and some GPU head room for when things get busy in DCS. Nice but $.

Not sure what to make of the 9 series 9600K is one of the CPU's I have been looking at it's relatively cheap 6 cores/threads and given the that DCS doesn't seem to use more than 2 cores, sure Rift and other software are using other cores that should be fine looks like they clock out to 4.8~4.9 depending on the silicon lottery. But not ground breaking improvements over what I already have.

If I were to, I'd go with the 9900K only because even if not overclocked it has more cores but a 95W TD limit and more cores might be a windfall for Valkan API so might the new AMD CPU's with high core count and faster than current gen AMD clocks. Is there competition coming?

Also ED are planning on improved VR support (soon?) so maybe just stick with it until that happens and see what you need do then.

If you run Task Manager and see what the CPU and GPU are doing I'd be surprised if your CPU couldn't push the GPU to 100%, mind you I'd recommend you try and keep that somewhat below 100% utilization by careful tweaking of settings so you can maintain a 45FPS frame rate.

Just for comparison With 1080Ti link to settings screen shot with PD at 1.1.
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Old 01-09-2019, 09:22 PM   #4
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Quote:
Originally Posted by FragBum View Post
Um I just upgraded to a 2080Ti from a 1080Ti and my CPU can still easily push the GPU to the wall having said that the gains are really mostly eye candy and some GPU head room for when things get busy in DCS. Nice but $.

Not sure what to make of the 9 series 9600K is one of the CPU's I have been looking at it's relatively cheap 6 cores/threads and given the that DCS doesn't seem to use more than 2 cores, sure Rift and other software are using other cores that should be fine looks like they clock out to 4.8~4.9 depending on the silicon lottery. But not ground breaking improvements over what I already have.

If I were to, I'd go with the 9900K only because even if not overclocked it has more cores but a 95W TD limit and more cores might be a windfall for Valkan API so might the new AMD CPU's with high core count and faster than current gen AMD clocks. Is there competition coming?

Also ED are planning on improved VR support (soon?) so maybe just stick with it until that happens and see what you need do then.

If you run Task Manager and see what the CPU and GPU are doing I'd be surprised if your CPU couldn't push the GPU to 100%, mind you I'd recommend you try and keep that somewhat below 100% utilization by careful tweaking of settings so you can maintain a 45FPS frame rate.

Just for comparison With 1080Ti link to settings screen shot with PD at 1.1.

FYI: FragBum,

TDP is rated at BASE CLOCK with a workload that only Intel knows what it is, so TDP is really not good to measure or guess anything imho.


mine is 2 cores less and exceeded 200w last week when validating the install, BAM !
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Old 01-10-2019, 12:53 AM   #5
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FYI: FragBum,

TDP is rated at BASE CLOCK with a workload that only Intel knows what it is, so TDP is really not good to measure or guess anything imho.


mine is 2 cores less and exceeded 200w last week when validating the install, BAM !
Yes agree and thats why if I were to do a new build now it would be the 9900K from what I understand it supports the highest clock for all 8 cores, it can turbo 2 cores to 5 Ghz but only drops to 4.7 Ghz for all 8 cores out of the box. Best OC point about 120 to 130W power level, I know you can push them harder.

But yes AMD Ryzen 3000 series looks interesting and if we can has Vulkan API included in DCS.



@v81

Actually I think almost anything with ~4.5 Ghz ish (maybe lower) CPU can push a 2080Ti to the wall aka 100% utilisation and associated frame rate drops other bad fungswae in DCS under VR this is why I would suggest the OP hold off until DCS provide the VR updates.
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Old 01-09-2019, 06:14 AM   #6
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If you can wait a little bit, Ryzen 3000 leaks sound very promising towards the 5G...and much more cores than Intel, for equal money.

I'd go AMD if you can wait
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Old 01-15-2019, 12:40 AM   #7
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If you can wait a little bit, Ryzen 3000 leaks sound very promising towards the 5G...and much more cores than Intel, for equal money.

I'd go AMD if you can wait
I'd agree with this. Supposedly they are caught up to Intel on ipc. Although we wont know for sure till there's benchmarks
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Old 01-09-2019, 06:42 AM   #8
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The choice of CPU will be insignificant as far as eye candy goes.
That is almost exclusively up to the GPU
Things like AA/AF HDR etc.. etc.. add no appreciable load to the CPU, the real true and honest answer is it doesn't really matter!

The 3770K is fine, albeit beginning to age.
If you do anything that take significant advantage of multiple threads (ie, not DCS) then consider Ryzen for value.
If you want the best of single threaded performance (ie, DCS) with a few more cores for the handful of tasks that can use them i'd suggest sticking with Intel.
I don't favour either brand.

A mate recently did an i3 8350K / GTX1070 build with brilliant results, was the best combo to fit the budget, and i think we was much better off with the 1070 then a 1060 or 1050 and a couple more CPU cores.
Previous to 8th gen i'd have never suggested an i3, but now they run 4 real cores at good clocks they are actually a solid gaming choice.

If you have more money to spare go the i5 K series SKU.

Overclocked or not the K SKUs benefit from higher base and turbo clocks, handy for DCS.

As for the eye candy, it's almost entirely up to the GPU, spend as high as you can there.
That is the most practical answer i can give.

Only get the i9 if you can already afford an RTX-2080Ti.

If the hint of fast Ryzen chips is indeed true this could also be an option.
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Old 01-10-2019, 12:08 AM   #9
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Don't overlook RAM. Someone did here did some benchmarks a while back that showed RAM clock speed was worth a few percent on FPS. A few percent doesn't usually matter on a monitor but it can be the difference between falling into ASW or not on VR. I got some fancy DDR4166 for my build for that reason, didn't increase the overall cost too much. I haven't done any benchmarking though.
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Old 01-10-2019, 01:10 AM   #10
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Don't overlook RAM. Someone did here did some benchmarks a while back that showed RAM clock speed was worth a few percent on FPS. A few percent doesn't usually matter on a monitor but it can be the difference between falling into ASW or not on VR. I got some fancy DDR4166 for my build for that reason, didn't increase the overall cost too much. I haven't done any benchmarking though.
Whilst I did notice a slight improvement in DCS by using all 4 channels (8 RAM slots X99) it was slight, generally what keeps you out of ASW is more GPU or at least having some head room with GPU utilisation at about 80% average at least that is what I am finding with the 2080Ti.

However as in all builds every little bit adds to overall performance.

YMMV.
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