PSA for owners of Asymmetric X3D CPUs: check your thread scheduling w/ Korea

[Husar]

14 minutes ago, reidarpeidar said:

6144x3216 pixels is definitely much higher than the native resolution of the Quest3.

Do you understand what is barrel distortion correction?   You need always to draw more pixels that panel native resolution to have 1:1 resolution.

Edited July 10 by Husar

[Husar]

44 minutes ago, reidarpeidar said:

6144x3216 pixels is definitely much higher than the native resolution of the Quest3.

You have to draw more pixels to account for barrel distortion correction algorytm. With that resolution in VD (godlike)you are not super sampling and not undersampling (in case choosing preset bellow godlike). When you undersampling and use Qualcomm SGSR on quest chip it upscales the  image to the native quest resolution which is much higher than a panel physical resolution since barrel distortion correction needs more pixels to work.

Edited July 10 by Husar

[pr0x]

18 hours ago, Husar said:

You need always to draw more pixels that panel native resolution to have 1:1 resolution.

That's the entire point.

18 hours ago, Husar said:

With that resolution in VD (godlike)you are not super sampling and not undersampling (in case choosing preset bellow godlike). When you undersampling and use Qualcomm SGSR on quest chip it upscales the  image to the native quest resolution which is much higher than a panel physical resolution since barrel distortion correction needs more pixels to work.

It is a form of super-sampling in the sense that it renders more pixels than the native resolution. The Quest3 upscaler only works on lower resolutions ("High" and lower in VD) and it only upscales to the native panel resolution (2064 × 2208). And the final image looks pretty awful anyway, so I never use it.

[HybridHanger]

23 hours ago, reidarpeidar said:

Aha. Process Lasso has something called Efficiency mode and that was turned off by default for il2series.exe. Efficiency mode apparently means that the process runs on the part of the CPU that is most efficient but has less processing power.

It wasn't until I specifically gave il2series.exe exclusive access to CCD0 that I got this enormous performance boost.

Glad you're getting a performance boost with Process Lasso. I just tested the same and am seeing a small gain over the default core-parking method, even outside of VR: 
 

 

[MajorMagee]

One additional thing you can do with Process Lasso is force Track IR to use one of the cores that is not being used by the game. I've been doing that for years to reduce stuttering.

[pr0x]

From 50 to 70+ fps in the 1% percentile range! That is quite insane, and I can tell you that it is night and day in VR.

Setting up Process Lasso so that these settings don't apply when you're not running Il-2 is very easy. You simply go to File->Config profile->Create config profile, and then add the CPU affinity settings while that profile is active. You then switch back to the old profile and go to the File->Config-profile->Config profile switcher menu to setup a profile switch on il2series.exe  

[Husar]

3 hours ago, reidarpeidar said:

That's the entire point.

It is a form of super-sampling in the sense that it renders more pixels than the native resolution. The Quest3 upscaler only works on lower resolutions ("High" and lower in VD) and it only upscales to the native panel resolution (2064 × 2208). And the final image looks pretty awful anyway, so I never use it.

It's not a super sampling is barley enough to render at native panel resolution with right geometry. Going above that would be super sampling. Quest upscaler can work on all present resolution if  you choose to enable it. 

Edited July 11 by Husar

[pr0x]

1 hour ago, Husar said:

It's not a super sampling is barley enough to render at native panel resolution with right geometry. Going above that would be super sampling. Quest upscaler can work on all present resolution if  you choose to enable it. 

Dude, I know what resolution I am rendering because the debug screen tells me so. Whether you want to call it super-sampling or not is irrelevant. The Quest upscaler is made for native Quest games and makes no difference on Ultra and Godlike. You can enable it but there is no difference in the image.

[Husar]

28 minutes ago, reidarpeidar said:

Dude, I know what resolution I am rendering because the debug screen tells me so. Whether you want to call it super-sampling or not is irrelevant. The Quest upscaler is made for native Quest games and makes no difference on Ultra and Godlike. You can enable it but there is no difference in the image.

It's all technical terms and you just making it's  same thing, doesn't matter that you know your resolution. You are wrong that it's only for quest native games, ask guygodin VD developer if you want confirm that you are wrong. This discussion is over, I would not waste my time anymore. 

[pr0x]

I am rendering 6144x3216 pixels, which was the initial claim you wanted to bicker about. The technical terms you later brought into the discussion don't matter.

Not, it's not ONLY for Quest games, I never said that, but that's obviously what it was made for. You are like that guy from Monty Python's Flying Circus:

 

 

[GiftGruen]

Coming back to the original topic (AMD)

I am considering an upgrade fron i5-14600K to AMD R7 9800.

And,yes, I am able to configure tools like ProcessLasso.

Since this means also changing Board, that‘s quite some effort ( financial and work )

Maybe one of you already did a similar upgrade and can report if it‘s worthwile? Just for VR gaming, this PC is gaming only.  Will not do this for 5% benefit … but Korea seams to be hungrY 😉

[Aapje]

@GiftGruen

Normally I would say no, but with a 5090, I'm leaning towards yes. But keep in mind that we should get Zen 6 with substantially higher clock speeds (at least 6 Ghz next year), so you can also wait for that.

[GiftGruen]

Mhhm @Aapje - thanks! This Zen6 stuff then also requires a new board/socket again?

Sorry if this is a stupid question but I am not in AMD at all so far ..

 

edit: already googled it - AM5 is okay for Zen6, so ….

Edited July 22 by GiftGruen

[Aapje]

Yes. Zen 6 will still be on AM5, so you can go to a 9800X3D or 7800X3D now and upgrade later on the same motherboard.

[Husar]

3 minutes ago, Aapje said:

Yes. Zen 6 will still be on AM5, so you can go to a 9800X3D or 7800X3D now and upgrade later on the same motherboard.

I wonder  if my passive cooling on AM5 socket (Noctua) will be enough to cool that 6ghz CPU.

[Aapje]

16 minutes ago, Husar said:

I wonder  if my passive cooling on AM5 socket (Noctua) will be enough to cool that 6ghz CPU.

NH-P1? It does support an additional fan.

BTW, I would advise against such cooling for people building something new. There are very good cheap coolers that do a great job with large slow fans that are quiet enough.

[Husar]

14 minutes ago, Aapje said:

NH-P1

Noctua NH-D14 old but works great since 2014 on Intel and AMD sockets. Passive I mean not with pumps not without fans.

Edited July 22 by Husar

[Aapje]

Air cooling works quite well until the heat production is fairly extreme, but so far the X3D-CPU's have been quite efficient, because their big cache means that they have to do less work to get the same performance (since they can keep already calculated stuff in the cache).

The 9800X3D can almost always take quite a big undervolt, so I would put at least a -20 mV all core on, together with a 200 Mhz boost, which people say works pretty much always. You can also try going lower, but then you need to do proper stability testing using OCCT, corecycler and Prime95 Blend.

The big benefit of undervolting is that it gives you a double bonus, where you can get both slightly better performance, while also reducing temps.

[HybridHanger]

FWIW: I'm running both my 9950X3D and 9800X3D with air cooling (both Noctua coolers), and they work great.