CPU bound with 5600X in VR, are you disabling SMT to get more single core juice?

[Youtch]

While looking at SYN_VANDER benchmark I realize that most of the people are reporting Frequency of 4,65 vs 3,8 of their 5600X CPU.

 

I recently realised I am CPU bound, and I was wandering what can be done to improve this.

 

Are people overclocking or disabling SMT to get more single core juice?

[102nd-YU-cmirko]

yes ^^
 

PBO is the way, a tool that will help you determine best undervolt (if you go this route)

 

test your single core boosts with corecycler 

 

[RAAF492SQNOz_Steve]

On 12/10/2022 at 1:51 AM, Youtch said:

While looking at SYN_VANDER benchmark I realize that most of the people are reporting Frequency of 4,65 vs 3,8 of their 5600X CPU.

 

I recently realised I am CPU bound, and I was wandering what can be done to improve this.

 

Are people overclocking or disabling SMT to get more single core juice?

My tests on disabling SMT on a 5800x showed no improvement when I did it about 12 months ago so I abandoned the idea. From memory, it actually made the performance slightly worse (lost 1 or 2 fps).

 

I recommend under volting your CPU, I ran mine on a all core -15 setting. Several video's are available on youtube about it.
I now run a 5800X3D that cannot be tuned in the same fashion but still gives better results for improving frame low frame averages and micro jitters.

Some micro jitters still occur in really busy scenarios, i.e. flying low over a city, but the 5800X3D did improve the situation quite a lot.

 

Edited December 10, 2022 by RAAF492SQNOz_Steve
missing word.

[354thFG_Drewm3i-VR]

26 minutes ago, RAAF492SQNOz_Steve said:

My tests on disabling SMT on a 5800x showed no improvement when I did it about 12 months ago so I abandoned the idea. From memory, it actually made the performance slightly worse (lost 1 or 2 fps).

 

I recommend under volting your CPU, I ran mine on a all core -15 setting. Several video's are available on youtube about it.
I now run a 5800X3D that cannot be tuned in the same fashion but still gives better results for improving frame low frame averages and micro jitters.

Some micro jitters still occur in really busy scenarios, i.e. flying low over a city, but the 5800X3D did improve the situation quite a lot.

 

I report a similar experience coming from a 5600X to a 5800X3D. Stuttering is almost gone for me.

[Youtch]

What benefits bring undervolting 5600x? It is not a very power angry chip. I also systematically use the safe standard overclocking in asus when playing IL2.

 

With a 5800x3D are you still CPU bound with a 3080?

[firdimigdi]

1 hour ago, Youtch said:

What benefits bring undervolting 5600x? It is not a very power angry chip.

 

Less heat ergo higher and longer sustained boost.

[Youtch]

29 minutes ago, firdimigdi said:

 

Less heat ergo higher and longer sustained boost.

I need to read about this, is undervolting compatible with increasing the frequency of the chip through OC? I have it currently at 4.5 instead of 3.8 standard.

[AtomicP]

I've not messed about with OC on my 5600X, but what cooler are you using? I have a Noctua NH-D15 and the max. temperature I've seen at full power is around 60C. It's an enormous cooler though. Only one fan at the moment because that's plenty. I needed two for my old FX-8350 which ran much hotter.

[firdimigdi]

1 hour ago, Youtch said:

I need to read about this, is undervolting compatible with increasing the frequency of the chip through OC? I have it currently at 4.5 instead of 3.8 standard.

 

Undervolting with Zen3 is mostly achieved via negative adjustment to voltage curves in the PBO settings instead of a global permanent overclock with a static negative offset. If you are doing the latter then yes, read up a bit and do the former instead.

[354thFG_Drewm3i-VR]

4 hours ago, Youtch said:

 

 

With a 5800x3D are you still CPU bound with a 3080?

Not at all.

[RAAF492SQNOz_Steve]

13 hours ago, Youtch said:

 

With a 5800x3D are you still CPU bound with a 3080?

I would say no but had a 3090 fitted at the time rather than a 3080.

I changed from a better than average 5800x to the 5800X3D and did not notice much of a difference in framerate highs but (from memory) got a 15% improvement in frame lows so overall a much smoother flight experience. Believe that I was GPU limited with that setup.

 

[Solmyr]

5600X and BeQuiet Dark Rock 4 with 1 fan. Didn't change anything since I mounted it.

 

Not in the Il-2 series for a very long period. ?

 

Why didn't AMD undervolt it stock if it's capable of and if it's a better bet ?

[firdimigdi]

42 minutes ago, Solmyr said:

Why didn't AMD undervolt it stock if it's capable of and if it's a better bet ?

 

Because all CPUs in the same series are equal but some are more equal than others.

It's not a quick process as not all CPUs can be adjusted in the same way due to hardware differences and the motherboard's power delivery plays an important role in this as well. And after all, when you buy the X variant of AMD CPUs it is a given that you will tinker.

Edited December 12, 2022 by firdimigdi

[354thFG_Drewm3i-VR]

^ I have disabled SMT for il2 only (and increased priority for il2) with process lasso for years and it absolutely helps btw. You want the OS in the background to use SMT/HT though.

Edited December 13, 2022 by drewm3i-VR

[Youtch]

4 hours ago, drewm3i-VR said:

^ I have disabled SMT for il2 only (and increased priority for il2) with process lasso for years and it absolutely helps btw. You want the OS in the background to use SMT/HT though.

How difficult of an operation it is? Lasso allows to have IL2 running without SMT and the rest of tbe app running with SMT at the same time?

[354thFG_Drewm3i-VR]

1 minute ago, Youtch said:

How difficult of an operation it is? Lasso allows to have IL2 running without SMT and the rest of tbe app running with SMT at the same time?

It's super easy to configure...just alt+tab out of the game, open process lasso, and select disable smt from the affinity tab. I keep it running all the time and from boot. It optimizes ram, power plans, etc. Does a really good job for all sorts of things.