Vega/Navi Rumors (Updated)

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MrTeal

Diamond Member
Dec 7, 2003
3,606
1,806
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That is correct, but I doubt memory bandwidth was a problem with Fury X, and even then Vega has architectural improvements that should ease memory bandwidth by quite a bit.

As for the clocking, scaling is near perfect as long as you're not bandwidth limited or CPU limited. The chip simply does the same only faster, it makes no sense for it to not reach near linear scaling.

Sure, as long as none of the games that make up that aggregate chart aren't bandwidth, or CPU/driver limited in some way or don't become so with a 60% faster GPU. For example, at 1080p and 1440p Fallout 4 gets the same framerate on a 390X, a Fury, and a Fury X. Even ignoring the extra shaders, the 5% higher clock on the Fury X had no effect on FPS.


Chances are some games won't scale linearly with clock speed, and you won't see the increase you want especially at lower resolutions.
 

Phynaz

Lifer
Mar 13, 2006
10,140
819
126
Second source saying Vega runs Doom/Vulcan slower than a 1080 runs Doom/OpenGL:

http://techbuyersguru.com/ces-2017-amds-ryzen-and-vega-revealed?page=1

Unfortunately, we just don't think all of this will add up to competitive performance. How do we know? Well, AMD had a demo of working Vega silicon running Doom at 4K, using a Ryzen CPU. It was hitting around 73fps....

Uh, oh, it looks like Vega is going to come in just below GTX 1080-level performance. And take note: we were running OpenGL in the table above, whereas AMD was running the more efficient Vulkan engine.
 
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jpiniero

Lifer
Oct 1, 2010
15,154
5,683
136
Drivers still need work probably. That would explain why it's not coming out for 2-3 more months.
 

CatMerc

Golden Member
Jul 16, 2016
1,114
1,153
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Sure, as long as none of the games that make up that aggregate chart aren't bandwidth, or CPU/driver limited in some way or don't become so with a 60% faster GPU. For example, at 1080p and 1440p Fallout 4 gets the same framerate on a 390X, a Fury, and a Fury X. Even ignoring the extra shaders, the 5% higher clock on the Fury X had no effect on FPS.


Chances are some games won't scale linearly with clock speed, and you won't see the increase you want especially at lower resolutions.
Fallout 4 is an odd outlier of a game.





etc'

Performance shouldn't scale linearly with shaders, but it should scale with clocks. AS LONG as neither memory bandwidth or CPU are being limiters.
 

Bacon1

Diamond Member
Feb 14, 2016
3,430
1,018
91
For example, at 1080p and 1440p Fallout 4 gets the same framerate on a 390X, a Fury, and a Fury X. Even ignoring the extra shaders, the 5% higher clock on the Fury X had no effect on FPS.

FO4 is a joke though. I mean you have a reference 980 TI faster than an OC'd custom 1080. Its clearly not GPU bound at all in any of those scenes.
 

MrTeal

Diamond Member
Dec 7, 2003
3,606
1,806
136
FO4 is a joke though. I mean you have a reference 980 TI faster than an OC'd custom 1080. Its clearly not GPU bound at all in any of those scenes.
Yeah, that's my point. The joke games and non GPU bound games do still get summed into TPU's charts though, so you should expect less than 100% scaling with clock speed for the aggregate charts.
 

tential

Diamond Member
May 13, 2008
7,348
642
121
How do you post a review showing a 980ti faster than a 1080 and not think your test may need to be redone?

Wow.... I lost tons of respect for tech power up after that one graph.....
 

Excessi0n

Member
Jul 25, 2014
140
36
101
How do you post a review showing a 980ti faster than a 1080 and not think your test may need to be redone?

Wow.... I lost tons of respect for tech power up after that one graph.....

No, they posted a review showing a 980Ti the same speed as a 1080. Error margins are a thing.

And anyways, Fallout 4 is pretty much completely CPU-limited in a lot of areas, especially if you have ridiculous overkill GPUs like they compared. That chart probably amounts to a comparison of CPU overhead between AMD and NVidia drivers.

Second source saying Vega runs Doom/Vulcan slower than a 1080 runs Doom/OpenGL:

http://techbuyersguru.com/ces-2017-amds-ryzen-and-vega-revealed?page=1

Judging by the screenshot showing DOOM's ingame performance meter, the benchmark chart and Vega demo are in completely different areas of the game. I wouldn't read much into that comparison given how variable DOOM's performance can be.
 

tential

Diamond Member
May 13, 2008
7,348
642
121
No, they posted a review showing a 980Ti the same speed as a 1080. Error margins are a thing.

And anyways, Fallout 4 is pretty much completely CPU-limited in a lot of areas, especially if you have ridiculous overkill GPUs like they compared. That chart probably amounts to a comparison of CPU overhead between AMD and NVidia drivers.



Judging by the screenshot showing DOOM's ingame performance meter, the benchmark chart and Vega demo are in completely different areas of the game. I wouldn't read much into that comparison given how variable DOOM's performance can be.

Nothing you posted changes anything I said. It's poor reviewing. Plain and simple.

Back on topic though, I would love to hear someone actually explain why they think the flagship card from amd will be slower than a 1080 rather than just simply spurring that conversation then hiding behind the line "well the article says this not me.". This is a technical discussion if you can't provide good reasoning why bother? We all know it won't happen... It's just derailing a conversation about where flagship Vega will actually end up.
 

JDG1980

Golden Member
Jul 18, 2013
1,663
570
136
Second source saying Vega runs Doom/Vulcan slower than a 1080 runs Doom/OpenGL:

http://techbuyersguru.com/ces-2017-amds-ryzen-and-vega-revealed?page=1

I find it difficult to believe that AMD would release a GPU that's bigger than GP102 yet barely competitive with GP104 - especially if it requires high-cost HBM2. At that point they'd be better off cancelling the consumer version altogether and only releasing the Radeon Pro equivalents (where the higher TFlops will be more important than gaming performance) rather than selling at a loss and getting a slew of bad reviews. This is especially true since if Zen is as good as the leaks indicate, they'll need all the foundry capacity they can get.

There are going to be two Vega GPUs in 2017. This preview could be from Vega 11, which is said to be the smaller of the two. Alternatively, it could be Vega 10 but have badly immature drivers that hurt performance. The third possibility is that AMD could drop the ball again - but this would be a pretty big fumble, almost as bad as Bulldozer, and would basically spell the end of RTG as a viable competitor in gaming.

In 2015, AMD's Fiji release was underwhelming - but they didn't have much warning, since Titan X was only released three months earlier, too soon to make any changes except some minor clock speed bumps and driver tinkering. Even then, Nvidia's victory was mostly based around releasing a cut-down GTX 980 Ti with much better price and performance than most expected. If Nvidia had stuck with the Titan X only, and kept it at $999, then AMD's card would have looked a lot better. AMD was clearly caught off-guard with how much Nvidia managed to improve from Kepler to Maxwell on the same 28nm node. But this situation is different. The GTX 1080 was released last May. We've got a "H1 2017" release timeframe for Vega, which means it will come out probably at least a full year after Pascal hit the streets. If Vega is really as uncompetitive as Termie thinks, I believe that Raja Koduri would have been let go, since that wouid indicate gross incompetence.
 

Vesku

Diamond Member
Aug 25, 2005
3,743
28
86
I'm a bit concerned at the amount of developer optimizations required to fully utilize Vega. Especially if this is going to be a $600+ card.
 

tential

Diamond Member
May 13, 2008
7,348
642
121
Vega looks cool. If it's awesome, I'll grab one.
It's all depending on how it's priced and how it performs. Fury X was mostly a failure to me because it held the same price point as a 980ti. So really this is all up to Nvidia in my eyes and how they price the 1080Ti. If Nvidia prices like they did last gen, where the AMD high end card has no room to price cut beneath it, and therefore they're on even pricing, then I just need Vega to be reasonably within striking distance of the 1080Ti. Last gen, you couldn't really make that argument. Maybe now some people can.... but I don't care how Fury X performs now.... I don't know why anyone does.

So that's where I see the 1080Ti pricing. At the lowest possible price High end Vega prices at, so that it's easy for the consumer to decide. Both end up at the same price, and it's a performance battle, and last gen it was so obvious what the choice was. AMD Vega just can't be too far behind like last time.
 

Elfear

Diamond Member
May 30, 2004
7,126
738
126
I find it difficult to believe that AMD would release a GPU that's bigger than GP102 yet barely competitive with GP104 - especially if it requires high-cost HBM2. At that point they'd be better off cancelling the consumer version altogether and only releasing the Radeon Pro equivalents (where the higher TFlops will be more important than gaming performance) rather than selling at a loss and getting a slew of bad reviews. This is especially true since if Zen is as good as the leaks indicate, they'll need all the foundry capacity they can get.

There are going to be two Vega GPUs in 2017. This preview could be from Vega 11, which is said to be the smaller of the two. Alternatively, it could be Vega 10 but have badly immature drivers that hurt performance. The third possibility is that AMD could drop the ball again - but this would be a pretty big fumble, almost as bad as Bulldozer, and would basically spell the end of RTG as a viable competitor in gaming.

In 2015, AMD's Fiji release was underwhelming - but they didn't have much warning, since Titan X was only released three months earlier, too soon to make any changes except some minor clock speed bumps and driver tinkering. Even then, Nvidia's victory was mostly based around releasing a cut-down GTX 980 Ti with much better price and performance than most expected. If Nvidia had stuck with the Titan X only, and kept it at $999, then AMD's card would have looked a lot better. AMD was clearly caught off-guard with how much Nvidia managed to improve from Kepler to Maxwell on the same 28nm node. But this situation is different. The GTX 1080 was released last May. We've got a "H1 2017" release timeframe for Vega, which means it will come out probably at least a full year after Pascal hit the streets. If Vega is really as uncompetitive as Termie thinks, I believe that Raja Koduri would have been let go, since that wouid indicate gross incompetence.

+1

It would be an extremely poor showing for AMD if they released their next gen architecture, with a full node shrink, and ~2yrs after their last high-end GPU (Fiji) for a 5-10% performance gain. That would be an epic failure and I hate to think AMD has gotten that incompetent. Has there ever been a successor on a full node shrink that gained so little?

4870 (55nm) gained ~56% over the 2900XT (80nm)
*2900XT ~= HD 3870*


5870 (40nm) gained ~43% over the 4890 (55nm)


7970 (28nm) gained ~30% over the 6970 (40nm)
 

Bacon1

Diamond Member
Feb 14, 2016
3,430
1,018
91
In 2015, AMD's Fiji release was underwhelming - but they didn't have much warning, since Titan X was only released three months earlier, too soon to make any changes except some minor clock speed bumps and driver tinkering. Even then, Nvidia's victory was mostly based around releasing a cut-down GTX 980 Ti with much better price and performance than most expected. If Nvidia had stuck with the Titan X only, and kept it at $999, then AMD's card would have looked a lot better.

Exactly. The only way the 980 Ti was better than Fury X (OCing) also made it better than Titan X. So basically AMD forced a $350+ price cut yet somehow Fury was still a failure in people's eyes. It still performs same as the Titan X even in 4k.
 
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IllogicalGlory

Senior member
Mar 8, 2013
934
346
136
Exactly. The only way the 980 Ti was better than Fury X (OCing) also made it better than Titan X. So basically AMD forced a $350+ price cut yet somehow Fury was still a failure in people's eyes. It still performs same as the Titan X even in 4k.
When the competing solution(s) are more than 20% faster out of the box (at the time), still have at least the same overclocking headroom, with 50% more RAM and better performance per dollar, how is that not a failure? Custom 980 Tis were and still very much are ahead of the Fury X in every possible metric.

https://www.techpowerup.com/reviews/MSI/GTX_980_Ti_Gaming/

Today, the Fury X is only 9.4% faster than the reference 980 Ti, (aftermarket 980 Tis are still 15-20% faster than the same) still only overclocks by about 7-10%. and still has that 4GB framebuffer hanging over its head.

Do you actually believe that if it were AMD with the 980 Ti and NV with the Fury X, you'd be saying any of this? I hear you ripping into NV for things such as 3GB 1060, 3.5GB 970, and I agree with you, especially about the 3GB 1060, but 4GB for a 4K card is every bit as much of a concern as 3GB for a 1080p card. Fury X is aging well, but its performance is barely suitable for 4K gaming to begin with and the 980 Ti is still much faster, even today.

That talk about AMD "forcing a $350 price cut" is nice, but it's telling that the only thing the card was good for was getting us cheaper access to NV's far superior chip.
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
I find it difficult to believe that AMD would release a GPU that's bigger than GP102 yet barely competitive with GP104 - especially if it requires high-cost HBM2. At that point they'd be better off cancelling the consumer version altogether and only releasing the Radeon Pro equivalents (where the higher TFlops will be more important than gaming performance) rather than selling at a loss and getting a slew of bad reviews. This is especially true since if Zen is as good as the leaks indicate, they'll need all the foundry capacity they can get.

There are going to be two Vega GPUs in 2017. This preview could be from Vega 11, which is said to be the smaller of the two. Alternatively, it could be Vega 10 but have badly immature drivers that hurt performance. The third possibility is that AMD could drop the ball again - but this would be a pretty big fumble, almost as bad as Bulldozer, and would basically spell the end of RTG as a viable competitor in gaming.

In 2015, AMD's Fiji release was underwhelming - but they didn't have much warning, since Titan X was only released three months earlier, too soon to make any changes except some minor clock speed bumps and driver tinkering. Even then, Nvidia's victory was mostly based around releasing a cut-down GTX 980 Ti with much better price and performance than most expected. If Nvidia had stuck with the Titan X only, and kept it at $999, then AMD's card would have looked a lot better. AMD was clearly caught off-guard with how much Nvidia managed to improve from Kepler to Maxwell on the same 28nm node. But this situation is different. The GTX 1080 was released last May. We've got a "H1 2017" release timeframe for Vega, which means it will come out probably at least a full year after Pascal hit the streets. If Vega is really as uncompetitive as Termie thinks, I believe that Raja Koduri would have been let go, since that wouid indicate gross incompetence.

Maybe the target segment for Vega isn't gaming...
 
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Bacon1

Diamond Member
Feb 14, 2016
3,430
1,018
91
That talk about AMD "forcing a $350 price cut" is nice, but it's telling that the only thing the card was good for was getting us cheaper access to NV's far superior chip.

This is what I was trying to say in my post. The Fury X was going up against the Titan X (hey even similar name) for much cheaper.

Nvidia's counter was to release the 980 Ti which was faster than the Titan X and thus undercut themselves, just to steal the thunder from AMD.

Regarding the VRAM, I haven't had any issues @ 3440x1440 with mine. Sure more would be welcome but I haven't found it limiting, and at this resolution Nvidia's offerings aren't fairing any better.

When the competing solution(s) are more than 20% faster out of the box (at the time)

At release 980 Ti was only ~10% faster @ 1080p and only 2% @ 4k

https://www.techpowerup.com/reviews/AMD/R9_Fury_X/31.html

Also that MSI you linked used 20w more power on avg than the Fury X which people complain about, and 25% more than a stock 980 Ti. OCing has its downsides.
 
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AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
Just to add that AMD had a superior product with the Fury Nano and they didnt take advantage of it by selling it at $650. Nano at $550 would sell like hot cakes at a time when GTX 980 was at $550. Nano was faster, smaller with same VRAM capacity and at the same power usage.
 

sansoo22

Junior Member
Jan 7, 2017
1
0
1
I may be slightly crazy, in fact my gf insists I am, but i don't think AMD even really cares to be top dog with the Vega. I think it is more important for them to prove HBM is a viable technology. After all they did help invent it so one can assume they hold some sort of patent on it. I couldn't find any info on if/how many patents they hold. I know it was a partnership with Hynix so they obviously would get a cut of any licensing revenue. Anyways, the benefits of HBM if proven viable reach a lot further than just desktop and workstation graphics. Imagine blade centers where a single blade is a cluster of hbm gpus or set top boxes like the roku or fire tv that have a hbm gpu in them. The more compute power an STB has the more we can compress hd streams. Which leads to less bandwidth usage while we allow the hardware to do the decoding for us. Eventually this technology, if proven viable, will trickle its way into mobile devices thus opening up a massive revenue stream for AMD via licensing cost structures.

That's my 2 cents for what its worth.
 
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