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Preliminary view of AMD VEGA Bios - Page 75

post #741 of 814
Quote:
Originally Posted by Nemesis.ie View Post

Have a close listen to the fan on the radiator, I have a buzzing type noise on my factory AIO too, but it is coming from the fan, not the card.

I don't believe this is normal/right (especially as fans are relatively cheap, so on this class of board they should be using a good one).

Maybe others can chime in. I am trying to get the card replaced as it also has a dead GPUtach LED.
You know, I suspected that as well. At low rpm the sound from the fan just didnt seem consistent. I would think the broken Tach would qualify you for a RMA. My corsair AIO came with some bad fans and with 2 RMAs they just shipped me new ones at no cost. Worst case I guess I can swap the fan myself, but I'll try requesting one from PowerColor if I can verify its the fan. Its my understanding they are high quality fans and I'd imagine the factory worker testing hundreds of fans a day has a hard time noticing minor flaws if they even test them at all.
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post #742 of 814
Guys, just wanted to say ROG FurMark artifact scan indeed picks up artifacts when my memory not stable, you could use it to figure out your stability.
I've settled on HBM 1000 @ 970v
Quote:
Originally Posted by chris89 View Post

The HBM sits lower on some GPUs which causes it to run hotter than the core... would need a repaste, but check from an angle if they are both precisely the same height...

https://hardforum.com/threads/vega-64-gpu-vs-hbm-temperatures.1944764/

Check to make sure the Core & HBM contact & DISPERSE the PASTE ... you wanna see the edges of the Squares, yet Copper in the center... showing ideal contact.

Great info man! I was considering repasting my chip, but is the HBM and Core supposed to have roughly the same temps? If so mine def needs to be.
My temps under stress are as follows:
Core clock 1632 HBM Clock 1000
Core: 75c
HBM: 83c
HotSpt: 90c

At idle they are all the same temp.

So Core and HBM are 8c in difference.
Edited by porschedrifter - 11/10/17 at 1:40pm
post #743 of 814
HBM temp is higher, for me with custom LC there can be a difference of about 15 degrees C. 45 for GPU and 60 for HBM.
post #744 of 814
Thread Starter 
@porschedrifter

I have molded die.



Ref cooler.



Water cooled.



Both tests no mods, factory VBIOS, driver defaults. Room ambient was similar for each test as check the min water temps of loop.

I see bigger differences on core vs hotspot vs HBM depending on how GPU is loaded compared with my above posted test info.
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post #745 of 814
Quote:
Originally Posted by gupsterg View Post

@porschedrifter

I have molded die.

Both tests no mods, factory VBIOS, driver defaults. Room ambient was similar for each test as check the min water temps of loop.

I see bigger differences on core vs hotspot vs HBM depending on how GPU is loaded compared with my above posted test info.

Curious as to what I have, not going to know unless I crack it open. Or is there another way to tell?
I have samsung HBM2's
post #746 of 814
Thread Starter 
Unless you take off cooler you'll have no idea. I started another thread where people can share data on what they got, if there are more responses I will add to OP a link. I have seen some "nudes" of same AIB ref card as I have, on differing forums, it is pot luck what you get on PCB.

All VEGA are Samsung HBM2 IC so far. I did post in owners thread how to check VBIOS, I must add to OP here.
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post #747 of 814
It's insane how much faster the AMD VEGA is than the 390X.

I honestly would say though the 96 ROP GTX 980 Ti is the best choice at the moment. Can't beat 96 ROP, am I right?

4096x2160 on 390X



4096x2160 on 390X all low

post #748 of 814
I have only been able once to get an 1760MHz core reported superposition run. The reported core voltage is 1.18125V and a power draw in the 500 en 550W region.
Most of the time however the card simply crashes as soon as 1.1825 core voltage is displayed in HWInfo64 and usually my powerdraw for the whole system is capped at 500~510W.

Using the power play tables I upped the power limit to 150%, 400 current limit, power draw limit set to 300W and set the core voltage to 1300mV.
I'm not limited by temperature as the card has an Ek block and during bench runs I usually see 40 core, 50 HBM, 56 Hotspot.
Are there other things I can change to get more voltage on the core?

post #749 of 814
Thread Starter 
I don't believe there is. If we switched off ACG/AVFS perhaps it would. You will see in DPM 5/6/7 there is a 1 and when changed to 0 could possibly do this. This is untested, I have no idea if it will apply or work as intended.

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post #750 of 814
I am a bit hesitant to further play(on my main system atleast) with the power play tables, it has happened more than once that Windows 10 breaks and I needed to modify the Windows10 register within Windows 7. The card/driver also doesn't like it when you for instance completely change the DPM states 1 -> 7.
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