RX Vega Owners Thread, Tests, Mods, BIOS & Tweaks ! (cont.)

https://www.guru3d.com/news-story/a...iffer-physically-and-quite-significantly.html

 

I have the same issue, unmolded.

I have max temps of 50c and hot spots of 90c

Cant lower that. Maybe with liquid metal dont know.

 

Just got a 3900x to push my vega 64 even more

370£ In some games the 1600 4ghz is not fast for the vega 64 .

Also geting ready for big navi

 

Liquid metal could maybe help a bit; here's some results with my card after looping 10mins of Heaven & CinebenchR20 simultaneously (was testing some unrelated CPU rad config changes the other day):



It's my daily setup so the wattage is quite low, which translates pretty directly to hot spot temps as seen in previous posts.

The card is a Sapphire V64 Nitro+ [molded] cooled by a Corsair H115i Pro. I used Coollaboratory Liquid Ultra as TIM. I've had it on for about 4 months now without any problems; used Thermal Grizzly Kryonaut before. Can't remember how the temps precisely scaled (seems I've deleted my testing log files at some point) in comparison to Kryonaut but there was definitely a benefit, especially with the hot spot temps.

I mostly tried it out of curiosity. If you decide to give it a try, be extra careful when applying the stuff since you've got an unmolded version. I asked my partner to apply some nail polish around the die just in case when I did mine

 

Molded die makes a huge diference in temps. I cant sort out the hot spot with the unmolded die. Maybe with liquid metal but I have one card And im afraid of use it.

 

No, DO NOT use liquid metal on an unmolded die.
It will not make any contact at all, specially on the memories.
I tested it.

 

Well after testing different settings, games, benches, etc, I settled on sweet spot for this card for now.

P6- 1655mhz @ 1095mv
P7- 1712mhz @ 1181mv
HBM- 1140mhz

Ran Division 2 (1440p maxed out) for about hour, avg. temps were 42c core, 45c HBM, and 76c Hot spot. I know hot spot is alittle high but its unmolded and I dont feel like tearing apart the card again to see if applying liquid metal that might not help. Using TG Kryonaut already so...

As far as the HBM I can run it to 1175mhz on everything but Time Spy. Anything above 1140mhz causes Test 2 to shudder and drop FPS, and anything higher than 1155mhz will cause error and ends test.

Performance:
Firestike-27091
Firestrike U- 6419
Timespy-8295
Superposition(1080 Ex)-5255

All games 1440 max settings
Division 2 bench- 78fps
Resident Evil2- 96fps
Doom- 116.6fps


Overall happy with card. Was wanting to get loop ready for water cooled vid card so this will do till next gen cards start showing up and we get a full lineup to see whats best.

 

the only thing I have better is the hbm. Mine does 1200 with lvl 1

 

Yeah, the height difference between the HBM stacks and the core is probably the issue here? And since the liquid metal is only applied as a thin layer, the contact surfaces stay uneven whereas with a thicker layer of more viscous material the surfaces somewhat even out.

 

I did think about the termal pad. Prob is a bad idea lol. Good old paste must be better with unmolded.

 

Yes, the memories are lower than the gpu die.
So, only the gpu die will make contact.

If you wanna go repasting, don't use anything else than either Kryonaut or GC Gelid Extreme.
None of these have thermal pumpout and are excellent for gpu/cpus dies.

 

For unmolded die I would do the opposite to Liquid Metal. 50*C - 90*C ... that temp difference is like the gpu was screaming "I have uneven contact you *****.

I would use a thermal pad.
2*C temp difference vs Kryonaut. I mean... Why would you even consider thermal paste for unmolded die?
0.2mm Carbonaut may be actually still too thin. Maybe something thicker would be better.

 

All I know is when I first got the card max temps would hit 68-70c GPU and same with HBM. Hot spot was 105c and thats with a Nitro+ cooler. After I redid paste with TG Kryonaut, new pad, and used washer trick card sat at 65c GPU, 68c HBM, and 98c. So for me to be getting 37c GPU, 38c HBM, and 78c on Hot Spot now that card has settled in... I'll take it. Should have WC'ed it long time ago. Much more higher and stable clocks. Stays at 1695-1705mhz under load. Where before I would be at 1655-1670mhz, card just feels different...more stable.

 

This won't work either.
It's indeed too thin.

Even a thicker pad won't do, because it's not like the pad will fill the gap properly.
Paste is the only way for unmolded.

 

Seems like overdrive ntool does not work with this drivers. what to use now?

 

Hello, problem in 20.5.1 is because AMD has chagned one file name from 'atikmdag.sys' into 'amdkmdag.sys'
Here is 0.2.9 beta1 which should fix this.

 

Oh nice thank you. btw with new drivers my vega has boosted to 1730mhz, only on hwinfo64 cant see it ingame.

 

Do not rely on HWinfo to much
look at Relive overlay & compare.

 

Card locked in:

GPU scores

Timespy- 8386

Firestrike- 27305

FirestrikeU- 6447

Superposition- 5270

Used same settings as Guru3d for testing
Division2 1440p- 78fps

1080TI/5700XT/ RTX 2070 type numbers depending on test or game.... happy with that.