• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

The RX Vega 64 Owners Thread

Well here's a bit of a spanner for that theory. Mine OC's hard, and UV's harder than most too. Mine is an Air C0. Soon to get a water block as it really needs one to see it's full potential but that's what I intended for it in the first place.

1752 set on P7, 950mv, ~1580MHz rock solid through Superposition, yet needs the fan up at max to keep it under 65C on my old rig and hangs about 61C in my new rig (much better cooling). So not all C0's are bad...
 
TrixX said:
Well here's a bit of a spanner for that theory. Mine OC's hard, and UV's harder than most too. Mine is an Air C0. Soon to get a water block as it really needs one to see it's full potential but that's what I intended for it in the first place.

1752 set on P7, 950mv, ~1580MHz rock solid through Superposition, yet needs the fan up at max to keep it under 65C on my old rig and hangs about 61C in my new rig (much better cooling). So not all C0's are bad...
Click to expand...

You're right if it is a C0 it throws the whole tool kit in the works not just a spanner but are you sure it's a C0? From what I've seen and read the air cooled reference cards are C1's and the water cooled ones are C0's. This is the first time I've heard otherwise.
 
@nashathedog

The whole revision thing is a bit "up in the air" IMO. Why I say that is various members on OCN who have flashed another VBIOS have noted revision change in GPU-Z. Initially Skullbringer on OCN tried RX VEGA 56 VBIOS on his RX VEGA 64 and you can see it showing C3 as revision (on factory VBIOS C1), link. We could say at that point GPU-Z was not supporting VEGA as well as now but I do recall even recently members in the OCN VEGA owners thread see same changes.

I have not been able to find "Revision" for ASIC in VBIOS, so dunno what/how GPU-Z show this info, but from how it changes for an owner with a differing VBIOS I'm skeptical that we are getting true "ASIC Revision" info.
 
Yep, my AC shows C1 at stock and C0 with an AIO BIOS flashed. I also can't get it remotely stable (even boot/desktop) with various AIO BIOSes flashed (it's under water), so it may not be that C1/C0 differences are in performance per se, but more in behaviour, i.e. C0 maybe clocks higher but also runs hotter, C1 may clock lower (i.e. max OC is lower than C0) but runs cooler clock for clock. That's often the way with "ASIC quality". Something to do with "leakage" I think?
 
nashathedog said:
It's not something someone like me could prove it's a presumption based on events we've watched unfolding over the last few months. First we had the new stepping rumour before release, Then on release there was two different revisions of Vega 64, A C0 chip for the AIO and a C1 chip for the air-cooled version. That made sense when you consider the new stepping rumour, Then we had a few sites reviewing the Vega Strix and it didn't seem to be doing that good. I asked on the J2C Strix review video and the other reviewer site (I forget which) whether it was a C0 or C1 but got no reply as expected due to my post being just one among hundred's. Then there was reports about board makers having problems getting stable overclocks for there non-reference models and then according to Videocardz a Gigabyte rep said Gigabyte wasn't going to make a non reference model.Then today we get another article on Videocardz saying that Gigabyte will now be doing a non reference model as they got given a new batch of Vega chips from AMD. That's what I quoted from the article I linked. Yes it's a lot of presumptions but to me it all adds up. I've never tried to say it's insider info or anything other than me having a tin foil hat moment but the more info we get the more it stacks up as a likely scenario. I found it weird that the two Strix reviewers didn't mention the revision used on the Strix as the fact that there's two revisions was documented and hypothesized on at release.
Click to expand...

But, it's all just rumours, you have nothing concrete, the events you say that have been unfolding are also rumours. That stepping rumour was some random guy commenting on a videocardz article. AS I said I keep looking around for C0 or C1 stepping and the only info I find on it are posts from you. In fact you are basing all of your theory on that random guy on Videocardz and the fact your AIO was C0.

The article says that they got a new batch of Vega chips, which I read as they finally got delivery of chips from AMD. If look back through older articles from Videocardz, no AIB had got chips from AMD for custom cards. That was at the end of September. There were shortages.

https://videocardz.com/72712/amd-partners-are-still-waiting-for-rx-vega-gpus-for-their-designs

The Asus Strix didn't get very good reviews because it was virtually identical performance to the reference Vega 64.

And then from nothing but rumours, you have somehow arrived at the conclusion that AMD were fobbing off bad chips to AIB partners, calling it disgusting and claiming that AMD had burnt their bridges with the AIB's.

You have to have some evidence before you can make accusations like that.
 
Nemesis.ie said:
Yep, my AC shows C1 at stock and C0 with an AIO BIOS flashed. I also can't get it remotely stable (even boot/desktop) with various AIO BIOSes flashed (it's under water), so it may not be that C1/C0 differences are in performance per se, but more in behaviour, i.e. C0 maybe clocks higher but also runs hotter, C1 may clock lower (i.e. max OC is lower than C0) but runs cooler clock for clock. That's often the way with "ASIC quality". Something to do with "leakage" I think?
Click to expand...

You're probably right, The way it behaves is what's meant to be different, hence why they couldn't use the C0's in the reference air-cooled cards and had to do another stepping to improve bit's like power draw and temps for the reference air cooled model.
 
melmac said:
But, it's all just rumours, you have nothing concrete, the events you say that have been unfolding are also rumours. That stepping rumour was some random guy commenting on a videocardz article. AS I said I keep looking around for C0 or C1 stepping and the only info I find on it are posts from you. In fact you are basing all of your theory on that random guy on Videocardz and the fact your AIO was C0.

The article says that they got a new batch of Vega chips, which I read as they finally got delivery of chips from AMD. If look back through older articles from Videocardz, no AIB had got chips from AMD for custom cards. That was at the end of September. There were shortages.

https://videocardz.com/72712/amd-partners-are-still-waiting-for-rx-vega-gpus-for-their-designs

The Asus Strix didn't get very good reviews because it was virtually identical performance to the reference Vega 64.

And then from nothing but rumours, you have somehow arrived at the conclusion that AMD were fobbing off bad chips to AIB partners, calling it disgusting and claiming that AMD had burnt their bridges with the AIB's.

You have to have some evidence before you can make accusations like that.
Click to expand...

As I said, I've never claimed to know something no-one else does, I've simply come up with an opinion and given my reasons for thinking so, As for why I think AMD would have tried to find a use for the older chips by handing them out to the board manufacturers in the hope they could design an air cooler that'll handle the C0's they didn't or couldn't use in the reference air cards, It's what I would have done in their place. If what I said is even remotely right I'm hoping Gigabyte isn't the only one who turned around and said they won't make their own cards and then got replacement chips, How you translate articles is up to you as is mine but I do not believe in the no chips claim as the market is full of Vega cards, there's scores of them available on all the main sites. I think it's likely the delays due to having to replace the C0's with C1's.
 
Is it just my eyes or do things look sharper/crisper on the Vega? Or is it that the Radeon recorder is just much better than the nv offering? The tyres on the back of the 4x4 even look better.
 
Nemesis.ie said:
Is it just my eyes or do things look sharper/crisper on the Vega? Or is it that the Radeon recorder is just much better than the nv offering? The tyres on the back of the 4x4 even look better.
Click to expand...

Yeah, seems to be much sharper. Nvidia seems to be much softer, has more pop-in, and some things (like the hot air balloons at 2:08) don't even appear at all!
 
sharmanov said:
Ive had similar problem with my system being able to run dx12 api and open gl api but crash resetting on DX11 api, and as weird as it sounds what fixed it was me swapping my 850 watt corsair power supply to my back up 700watt corsair power supply which im still using until i can afford a decent 1000watt
im using msi krait gaming x370 board and ryzen 1700. hope this helps dude because i know how frustrating it can get. :(
Click to expand...

Guess what? I think it was a PSU problem, like you said. I would have never thought a 1000W PSU (Corsair HX1000i) would have any problems with my system, but it did. My problem was that I was using only a single PCIE cable from the PSU to the graphics card. It was one of those pigtail cables with 2x8pin. The manual that came with the PSU didn't say anything about it, so I plugged in the pigtail to the second 8pin.

However I read somewhere else online that people were comparing whether to run 1 or 2 PCIE cables to the GPU and in some instances it worked with 2 cables and not with a 1 with a pigtail (they were older threads and didn't include Vega in the discussion). So instead of using the pigtail, I ran a separate PCIE cable (which also has a pigtail - not pretty :(). I loaded up my old trusty XCOM 2 WotC save file that had crashed my system at least 15 times, 100% of the time, in the past. It went past the crashing point without any hiccups. I did notice the coil whine noise was intermittent at that point in the game. Also the coil whine was significantly quieter! Perhaps there were some really high peaks and lows and it was too much for the single rail.

Now I get to do a lot more testing! Thank you so much for your help mate! You were the first one to put me in the right direction. :D

Lessons learned guys: always run separate PCIE power cables for your RX Vega 64, even with a 1000W PSU. :cool:
 
You must log in or register to reply here.
Back
Top Bottom