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Dasa

Radeon VII (VEGA 20)

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Posted (edited)

No heat pipes as the Heatsink has a vapor chamber over the core. That is just the edges of the HBM and the core seem to be a little higher than the center.
Apparently there is a epoxy resin coating over the lot that is supposed to make it flat and protect the chips.

radeon-vii-teardown-2.jpg

AMD_Radeon_VII_Vega20_GPU-54366d75a0a42a

 

Edit:

I clicked post via startrack by mistake when ordering instead of express post so I paid $4 extra for something that will take a day longer as they dropped it in to the post office today to travel the last half the journey.
But it could be worse as in the past they have just left items sitting in there local depot 100k away for over a week.

Edited by Dasa

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New card is installed here is a quick run at stock

20 844 with AMD Radeon VII(1x) and Intel Core i7-6700K Processor
Graphics Score 28 464

http://www.3dmark.com/fs/18620818

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Noted the "Graphics driver is not approved", that the new driver released?

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Posted (edited)

Yes the they have rushed out a few small fixes since the release driver this is 19.3.1 which was released yesterday.

 

Timespy

8231 with AMD Radeon VII(1x) and Intel Core i7-6700K Processor

Graphics Score 8886

http://www.3dmark.com/spy/6500306

Short test so GPU temp only hit 65c and 97c junction with fans topping out at 3000RPM at which they do make a bit of noise.

 

22-40% faster at stock than my 1070 on water with a powertune vmod and unstable.

https://www.3dmark.com/compare/spy/6500306/spy/5308339

 

Safe to say it is a snug fit

radeon%20vii.jpg

Edited by Dasa
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Posted (edited)
47 minutes ago, SceptreCore said:

Are those scores good? i don't benchmark anymore.

Gambles best GPU scores in firestrike

1080Ti 29,124
2080 27,563

Founder 2080 ti at stock
~35,000

 

My Radeon VII

Stock 28,464
Undervolted from 1136mv to 1001mv 28,623
Best score so far 31,715
at
2005 core (Stock 1800) <cant get it to run 2010+ even with extra v.
1126mv (Stock 1136mv)
+20 Power
1200 mem  (Stock 1000) 1200 is the max setting allowed

100% fan
J max 97c
Ambient ~25c

 

I see someone has hit 35K with a Radeon VII using stock HSF lapped with a custom BIOS.

Edited by Dasa
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12 hours ago, SceptreCore said:

You've forgotten the most important thing Dasa

Which is?

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Im gonna guess putting it under water?  

But man I can't believe you got that in there after seeing the pic!   

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Unfortunately the local metal work shop only has a plasma cutter which would warp the 2mm steel needed for a new mount plate and the closest laser cutter needed for making a new plate is 100k away and it will probably cost over half as much as the block itself just to draw it up on on the PC ready to be made.

So I have run into a bit of a delay.

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Posted (edited)

A bit of data somebody put together from others results.

 

Quote

Average stock voltage: 1084 mV
Median stock voltage: 1080 mV
Lowest stock voltage: 1018 mV (66 mV below avg.)
Highest stock voltage: 1149 mV (65 mV above avg.)

Average undervoltage (for those who undervolted at least 1 mV): 91 mV

 

So it looks like they test what is a stable V then add almost 100mV more just to be sure.

 

Edit: Some tests with the Radeon VII under a full cover block.

 

attachment.php?attachmentid=259692&d=155

Edited by Dasa

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Posted (edited)
Finally got my Radeon VII on water although it is not as neat as I had hoped.
@2200c 1.293v +60% 1275m (EvenMorePowerVII_1293+)

Firestrike Graphics Score 33,246
http://www.3dmark.com/spy/7252701

Timespy Graphics Score 10,459
http://www.3dmark.com/fs/19401306

Max temp
25C core
55C junction
16c Idle
These temps are just from 3dmark not from looping something like metro.

Storm G5 is now mounted on the Radeon VII with a thick application of grizzly kryo.
Ended up making another plate to go between the GPU and the Block so it can use 4 small bolts with 4 large bolts, it's not pretty but it does the job.

The CPU block was designed for direct core cooling and is made out of 99.9975% pure silver, it is fairly restrictive with it's jet's.
The holes in the base for the water jet's are about the size of the core and the HBM sits off to each side a little.

Used some old stained Tygon tubing as it was kinking the least out of my tube selection when trying to fit it in between the GPU and the PSU.
 
Looped metro at 2000c 1138mv +20% 1130m 
Max temps
Core 28c
Junction 53c
Idle 16c
 
G4_G520013.jpg?attredirects=0G4_G520011.jpg
Temps%20after%20firestrike%20timespy.jpg
DSCN1829.jpg?attredirects=0DSCN1828.jpg
Edited by Dasa
  • Yes Sir! Very atomic! 1

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Glad to see you got it to fit and add a water solution.   Seems like it performs pretty darn good (cooling and OC).  Crushing it with that Firestorm results.  I was comparing your graphics score to mine and its just weird how in FS you get 21% higher but in TS I get 13% higher for graphics score, they flip flop.   Curious does your core mhz fluctuate on some games?  

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25 minutes ago, gamble said:

 Curious does your core mhz fluctuate on some games?  

By ~100MHz

 

I guess there is something about the balance of shaders ect. that give the Radeon VII a advantage in FireStrike and something in TimeSpy that gives the 2080 a advantage over the Radeon VII and 1080Ti

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Because I don't know anything about modern 3dmark... I'm guessing those are great scores. The site says a 2080Ti gets 31,000+. The only way to go higher would be a CLR chip.

 

The temps are fantastic, are you happy with the card though?

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For the price and my use I think it was the best choice second best choice would have been to pony up the extra $500 for a 2080ti

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Posted (edited)
6 hours ago, SceptreCore said:

This card is now EOL 😮

 

Sounds like the stand-alone Vega cards will stop production and go all Navi. Vega will live on in APUs ...

Edited by Jeruselem

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Posted (edited)

Guess 16GB HBM2 was just to expensive, I wonder if they are planing another GPU with HBM2 any time soon.

Or maybe they needed the limited 7nm fab space for the more profitable 5700.

It's a shame they didn't release a compact version of the Radeon VII with AIO cooling like the Fury as then it would have been a strong competitor for the 2080 other than the ludicrous power use and small profit margins.

Edited by Dasa

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Posted (edited)

I guess HBM is great but the production costs are bit too much for AMD. Nerdy engineering stuff

 

 

Edited by Jeruselem

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