Question RDNA2 interesting observations

[Z O X]

I have 6800XT set to max 2500 MHz and voltage locked to 1075 mV.

In an effort to minimalize input lag for a game (Apex), I've stumbled upon deep sleep states in MPT.
Disabling those, I've got some interesting results: power draw is actually lowered by 30-40W when locked to 175 FPS.

My explanation is that although very fast, waking the GPU core forces it to max state until work accumulated drops and by disabling sleep states, the card is not forced to go full throttle when waking from sleep.

Before disabling states, the card was consuming 230 - 240W with peak of 260+W.
Now it runs at 200W and I've seen it hit almost 230W once.

Maybe someone can confirm this?

 

[igor_kavinski]

Unfortunately, not many will want to mess with a third party tool that could possibly bork their GPU.

Did you see any lag improvements or fps increase or performance stayed the same with lower power consumption?

 

[Z O X]

Unfortunately, not many will want to mess with a third party tool that could possibly bork their GPU.

Did you see any lag improvements or fps increase or performance stayed the same with lower power consumption?

At current summer limit (no AC) of 2400MHz/1,042V, Superposition gives a score of 10506 at 242W/85C.
Just finished a round of Apex BR limited to 176 FPS and it consumes 176W/75C and frametime line is completely flat.
With default settings, frametime was completely jagged before jumping out...
Don't have Timespy since it's not free anymore, but last score was above 22000.

Most importantly, yes, in power hungry games (e.g. Helldivers) there are no micro hiccups.
Increasing mem frequency has far more benefits if "memory access at last level" is also increased.

Without MPT, the card will gladly take up to 1.15V in some situations even if undervolted in Adrenalin.

RX6000 series is fun to tinker. Too bad newer generations are completely locked outside Adrenaline ...

 

[igor_kavinski]

Can you post a simple guide of your preferred tweaks if you don't mind? MPT may look alien to the uninitiated.

 

[Z O X]

Can you post a simple guide of your preferred tweaks if you don't mind? MPT may look alien to the uninitiated.

OK, I'll create a guide and post on YT...

 

[Shmee]

At current summer limit (no AC) of 2400MHz/1,042V, Superposition gives a score of 10506 at 242W/85C.
Just finished a round of Apex BR limited to 176 FPS and it consumes 176W/75C and frametime line is completely flat.
With default settings, frametime was completely jagged before jumping out...
Don't have Timespy since it's not free anymore, but last score was above 22000.

Most importantly, yes, in power hungry games (e.g. Helldivers) there are no micro hiccups.
Increasing mem frequency has far more benefits if "memory access at last level" is also increased.

Without MPT, the card will gladly take up to 1.15V in some situations even if undervolted in Adrenalin.

RX6000 series is fun to tinker. Too bad newer generations are completely locked outside Adrenaline ...

Cool results. Just to nitpick here though, at least on my 7900XTX, I can tinker with it using MSI afterburner. Sometimes I prefer this to adrenaline due to having different profiles and more control. Not sure if all RX 7000 cards work with it though, and not sure about the RX 9000 series.

 

[Z O X]

I wrote a 10 page script with more detail info, but after numerous tries can't get it flawlessly in one go and am lazy to mess with Premiere, so ...

If you have any questions, feel free to ask!

 

[igor_kavinski]

Pretty great info! Thanks!