4-channel RAM CPUs, make them a difference for IL-2?

[chiliwili69]

CPUs with 4-channel RAM (also called quad) provides a higher bandwidth than the classical Dual Channel CPUs.

But on the other hand, they are more difficult to overclock.

We have been testing a couple of those chips, but we can not still validate any theory.

 

If you have a 4-channel CPU , could you please run this benchmark:

https://forum.il2sturmovik.com/topic/56485-benchmark-for-cpuram-performance-remagen-4002/

 

This is a list of Intel 4-channel CPUs (there could be more that I didn´t include). The Ryzens 39XX I think they are also 4-channel.

[ZachariasX]

Here, my i9-7900X.

 

I did not max out everything, I prefer it a bit more conservative for longer periods of heavy lifting, So I put it at 4.2 GHz for 10 cores. (4.6 up tp 4, 4.4, up to 6, then 4.2)

Spoiler

Multithread:

Singlethread:

 

 

 

Game version 4.003, just updated.

 

Results:

Frames: 19834 - Time: 180000ms - Avg: 110.189 - Min: 71 - Max: 196

 

 

 

 

[chiliwili69]

Thanks!

What are your full PC specs (mobo, RAM, GPU)?

 

Could you try to run the test at 4.6 with 4 cores?  (IL-2 dones´t need more cores).

[ZachariasX]

18 hours ago, chiliwili69 said:

Thanks!

What are your full PC specs (mobo, RAM, GPU)?

 

Could you try to run the test at 4.6 with 4 cores?  (IL-2 dones´t need more cores).

 

Intel Core i9-7900X X-Series (LGA 2066, 3.30GHz, Unlocked)

Gigabyte GTX 1080 G1 Gaming (GF104, GP104, 8GB)
Samsung 960 PRO (1000GB, M.2 2280) (Boot partition, have data & games hooked up on other SSD)'s
be quiet! Silent Loop 280mm
Corsair Vengeance LPX (4x, 8GB, DDR4-3600, DIMM 288)
Seasonic PRIME Titanium (850W)

 

Haven't disabled the cores yet, plus HT is active. It is difficult to guess the exact frequency as Windows shifts those threads around. But in its current iterations, IL2 aparently uses 6 to 8 cores, just not that intensive so. Hence I'd consider the game ran @4.2 GHz. This, because the system remains rather cool, only during loading collective CPU load is >60% and heat goes up immediately.

 

I might try disabling HT and running 4 cores. Like that I probably can go 4.8+ GHz. But for this I have to find the 4 sweet cores first. I've reached 4.9 GHz like that before Prime95 (and often enough, the system) died on me with a single worker. But I could set the system easily at 4.6 GHz for all cores just to run IL2. The problem with that is if I was to do anything else it would cook quickly. But running on 1440p all maxed, it is as much GPU limited as CPU limited. Also I would not want to up voltages. This is a VERY hot chip and 5% performance gain come at a lot of pain.

 

I'm really considering a Rift S (finally!), so I might play with such settings and reduced eye candy.

[Alonzo]

On 12/18/2019 at 11:35 AM, ZachariasX said:

I'm really considering a Rift S (finally!), so I might play with such settings and reduced eye candy.

 

My current compromise is to just accept 40 FPS ASW, lock it there using Oculus Tray Tool, and then crank the settings. 150km draw distance apparently helps with some of the 'fog' people were getting in VR on the newest Rheinland map, and I can run the whole thing on Ultra with 1.2 pixel density. It looks hella good.

 

With the 1080 and a 4.2ghz CPU you can probably get 40 ASW on High settings, maybe with moderate AA and super sampling. A lot of my squad mates are happily flying the Rift S in conjunction with a 1080, you just can't ask it to push too many pixels.