Originally Posted by LesPaulLover
Any other insights here? Right now I'm working on a dynamic overclock using the CPU Turbo Boost Multiplier. Settings are currently:
All cores x48 Turbo Boost (no x50 for 2 cores, x49 for 3 cores etc)
CPU Internal AC/DC Loadline: Performance
Loadline Calibration: Standard
Pretty much everything else standard. This currently gives a full-load Vcore of 1.272v (barely any higher than my manual overclock set @ 1.260vcore) but also allows idle voltage to drop to 0.600vcore and idle clocks to sit in the 800MHz range.
Testing games for any performance differences currently. Synthetics are a simple test as they fully load the CPU causing it lock on 4.80GHz @ 1.272vcore. Games seem to be a little different - all cores will always lock @ 4.80GHz but the core voltage fluctuates wildly (in CPU intensive games it'll sit @ the full 1.272vcore, however in non-intensive games it'll run as low as 1.150vcore).
Will this reduction in voltage have any effect on performance? Specifically FRAMETIMES as I'm running 144FPS @ 144Hz?
Depend on the game you are using, it will not use all cores, therefore some cores will remain underloaded with lower voltage and lower frequency, as a lot of games have affinity to physical cores vs distrbuting the load among sequential threads.
On a 4-6 cores cpu this is much more rare, as you will have several windows and other services running under cpu threads.
Some games like battlefield 5/1 and notable CPU hoggers and will eat all threads.
Unfortunally, beyond certain point, no matter what GPU you have, even 2080ti SLI, and even what cpu you have, you will be constrained by game code.
Over several years on 144 @ 144 train, i can say to you what is best to stay near it:
1) Best single card GPU: if you must go sli, but always use the top gpu. When i got a 2080ti, i was surprised how it gave me 20-30% better frames and better frametime and less lag/stutter than 1080 SLI
2) Best frequency CPU: You should aim for top clocks/IPC, with 6-8 cores. Currently i believe 6 cores @5.0-5.2 is the best setup available, as you will probably end with maxed cores, without maxing cpu. Also, unfortunally, some games tend to use a main thread that usually tops a single thread fully. This cant be solved except by redesigning the code
3) Good RAM: get the best frequency you can, with the tighter times you can. At least 3600, ideally 4000-4200, with the best timings you get.
4) Good SSD: Use a good NVME SSD, on your operating system, and depending on game, to load it too. You could be surprised how much it can affect experience, especially considering windows really need paging files
5) Use a non HOME version of windows 10: prefer Windows PRO or better Windows Enterprise, this last one allows you to reduce telemetry to bare bones. I usually strip my windows installations to bare bones, and on a 144hz machine i usually only run VMBOX. I found out using Hyper-v, even with it not running, make high hz gaming suffer a little due to hyper-v context change overhead. I even avoid to install office or any other thing, i prefer using another boot or machine for work.