Vega refresh - Expected? How might it look?

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Qwertilot

Golden Member
Nov 28, 2013
1,604
257
126
Its not like they have a choice, im sure they dont want to sell the 56 for Nvidia xx60 pricing but if the 2060 is as fast or faster than vega 56 they wont have a choice in the matter, they will have to sell it at whatever price its relative performance justifies or no one will buy it.

The TDP is for sure an issue. Not sure how they are going to tackle that one.
Their potential alternative is to basically stop making Vega (outside its known markets like Apple etc that is) & sell Polaris where they can while dreaming of a brighter future.

Sad but not, I fear, impossible given where Vega has landed.

I don't think they've ever sold fury really cheap for instance?

Sent from my XT1635-02 using Tapatalk
 

Intervenator

Member
Aug 26, 2013
117
7
76
It is hard to take a hot, power hungry, large die sized card that arrived a year late and expect AMD to suddenly alleviate at least one of these main drawbacks or pull a 1080ti competitor out of their hat. I understand why people conceive of this fairy tale, but it is simply not a grounded concept. It appears to me that AMD is now in the same spot versus NVIDIA that it was in versus Intel a decade ago. In my opinion, Vega is the Polaris to NVIDIA's Volta, arrived early. People just do not know that yet.
 
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Mopetar

Diamond Member
Jan 31, 2011
8,005
6,451
136
Their potential alternative is to basically stop making Vega (outside its known markets like Apple etc that is) & sell Polaris where they can while dreaming of a brighter future.

They'll be releasing Vega into HPC markets where it will fare better. They don't need to overvolt it or clock it beyond where it's efficient and can sell their chips at much higher margins. I suspect they'll sell as much as they can into those markets and the leftovers go towards the consumer products.

Vega seems like it might have some long legs. As others have mentioned, it seems to have a lot of technology that's either turned off or not being utilized. If AMD keeps and refines that going forward, Vega might eventually be as good as 1080 Ti in terms of raw performance, but it might just take 3+ years before developers start using all of those features and the drivers get worked out.

Vega 56 seems like a reasonably good purchase if you can get it for $400, or at least close to the same cost as a 1070 since neither are really going for MSRP. I think that we will see enough incremental improvements in the short term to make it a better buy all else equal.
 
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eek2121

Diamond Member
Aug 2, 2005
3,051
4,273
136
I have a feeling you are right, but i hope for AMD's sake you are wrong. AMD is going to be in a world of hurt if they have nothing to counter volta till navi.

Volta isn't coming out until May 2018. AMD has confirmed a Vega refresh on 14nm+. A vega refresh on 14nm+, 4 stacks of HBM2, and mature drivers will be something else and will be more than enough to compete with Volta.
 
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DisEnchantment

Golden Member
Mar 3, 2017
1,687
6,236
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What do you mean ? Driver version ?

17.320 is a prototype driver used internally at AMD.
Data based on AMD Internal testing of a prototype RX Vega sample with a prototype branch of driver 17.320

http://radeon.com/_downloads/vega-whitepaper-11.6.17.pdf

Also Ryan mentioned that the Primitive shader are not activated yet in current public drivers.
Quick note on primitive shaders from my end: I had a chat with AMD PR a bit ago to clear up the earlier confusion. Primitive shaders are definitely, absolutely, 100% not enabled in any current public drivers.

The manual developer API is not ready, and the automatic feature to have the driver invoke them on its own is not enabled.
https://forum.beyond3d.com/posts/1997699/
 
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krumme

Diamond Member
Oct 9, 2009
5,956
1,595
136
About the ngg path.
From amd whitepaper
http://radeon.com/_downloads/vega-whitepaper-11.6.17.pdf

"This next-generation geometry (NGG) path is much more flexible and programmable than before. To highlight one of the innovations in the new geometry engine, primitive shaders are a key element in its ability to achieve much higher polygon throughput per transistor. Previous hardware mapped quite closely to the standard Direct3D rendering pipeline, with several stages including input assembly, vertex shading, hull shading, tessellation, domain shading, and geometry shading. Given the wide variety of rendering technologies now being implemented by developers, however, including all of these stages isn’t always the most ecient way of doing things. Each stage has various restrictions on inputs and outputs that may have been necessary for earlier GPU designs, but such restrictions aren’t always needed on today’s more flexible hardware.

“Vega’s” new primitive shader support allows some parts of the geometry processing pipeline to be combined and replaced with a new, highly ecient shader type. These flexible, general-purpose shaders can be launched very quickly, enabling more than four times the peak primitive cull rate per clock cycle. In a typical scene, around half of the geometry will be discarded through various techniques such as frustum culling, back-face culling, and small-primitive culling. The faster these primitives are discarded, the faster the GPU can start rendering the visible geometry. Furthermore, traditional geometry pipelines discard primitives after vertex processing is completed, which can waste computing resources and create bottlenecks when storing a large batch of unnecessary attributes. Primitive shaders enable early culling to save those resources."



Well they better get that to work !
 
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Dribble

Platinum Member
Aug 9, 2005
2,076
611
136
The big problem coming up is when the miners start to dump their cards. The market will be flooded with polaris cards, and probably quite a few 1060's and 1070's. This means selling them new becomes hard. You then need a new range or cards as for example "shall I buy a new 1060 or a used 1060 for half the price" is a harder sell then "shall I buy a new 2060 or a used 1060 for half the price".

Hence forget the high end for now, any refresh for AMD needs to be to 570/580 range of cards. They need a Vega based 670/680 or their sales will fall through the floor.
 

zlatan

Senior member
Mar 15, 2011
580
291
136
Zlatan. You need to tell us more

The ngg path is it in game engines or in the driver?
When can we expect to see it in action?

The NGG path is in the hardware. The driver has to support it, and than the complier can do the all the magic for the applications. So basically the NGG path is completely transparent for the devs.
I don't heard anything about the manual access. It is easier to do some driver magic under the hood. They can target very tipical workloads without specific profiling. Of course they can also optimize more for some engines with the application profiles.
Manual access may be possible in the future, but a full feature set may require to bring back Mantle. I'm pretty sure that this is not priority now.

Probably the Redux driver will allow the NGG path. This is the next big Crimson release. Sometime november or december...
 

zlatan

Senior member
Mar 15, 2011
580
291
136
If HBM2 is fine why are clocks not 2 Ghz and why is pseudo channel missing.
2 GHz is just the maximum clock. It may be more useful to not allow the full speed, and save some power.
The pseudo channel mode is probably not stable with the current drivers.
 
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raghu78

Diamond Member
Aug 23, 2012
4,093
1,475
136
2 GHz is just the maximum clock. It may be more useful to not allow the full speed, and save some power.
The pseudo channel mode is probably not stable with the current drivers.

Pseudo channel mode is a HBM2 feature designed to improve bandwidth.

http://monitorinsider.com/HBM.html

Vega is struggling with real world bandwidth as a % of peak theoretical bandwidth.

https://techgage.com/article/a-look-at-amds-radeon-rx-vega-64-workstation-compute-performance/5/

I don't know if its a hardware or software issue. But the fact that its not working just proves how poorly the Vega launch has been executed.
 
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krumme

Diamond Member
Oct 9, 2009
5,956
1,595
136
Pseudo channel mode is a HBM2 feature designed to improve bandwidth.

http://monitorinsider.com/HBM.html

Vega is struggling with real world bandwidth as a % of peak theoretical bandwidth.

https://techgage.com/article/a-look-at-amds-radeon-rx-vega-64-workstation-compute-performance/5/

I don't know if its a hardware or software issue. But the fact that its not working just proves how poorly the Vega launch has been executed.
Yep. But that point is beaten to death. Same for the memory. Come on.
We actually get NEW info from a compettent trustworthy source that there still is a lot - if not huge - performance uplift waiting for us. And reduced power.
Great news.
Thank you.
 

Guru

Senior member
May 5, 2017
830
361
106
Just get as far away from this [inferior] design and double down on Polaris and make that architecture great again for a big chip.

Nvidia has a compact design that uses very little power, AMD uses a more spread out design and need more power to use it, but since its also very complex they do end up losing performance.

Nvidia's design is a lot more simpler, focused on the needs of now, rather than in 2 years time. So their GPU's are best optimized for DX11, while engineered to do decent enough in DX12/Vulkan. Their next generation will most likely focus a lot more on Vulkan and DX12, which would be the now in about a year's time.

Profanity isn't allowed in the technical forums.
-- stahlhart
 

krumme

Diamond Member
Oct 9, 2009
5,956
1,595
136
Just get as far away from this [inferior] design and double down on Polaris and make that architecture great again for a big chip.

Nvidia has a compact design that uses very little power, AMD uses a more spread out design and need more power to use it, but since its also very complex they do end up losing performance.

Nvidia's design is a lot more simpler, focused on the needs of now, rather than in 2 years time. So their GPU's are best optimized for DX11, while engineered to do decent enough in DX12/Vulkan. Their next generation will most likely focus a lot more on Vulkan and DX12, which would be the now in about a year's time.
Agree that they are always to early and to techhie. But lets see where vega lands when they finally enable ngg that is what makes vega interesting from a gamers perspective.

And lets also remember they had to adress dx11 and st cpu perf lock and nv lock of dx11 mt perf. Dx12 and vulcan did that. The uptake is dog slow. But it is a major long term strategic win vs to far bigger oponents too force those standards in. It was a nessesary move and the too forward looking tech had a part in winning it via the consoles.

And if we look at vega its made to be scalable. Surely tech made to be also used in next gen consoles. From ground up with IF in its core.
And while hbcc is uninteresting for gamers short term its imo outright revolutionary for some of the pro market.
But yeaa we are waiting for the ngg path and some extra hbm2 efficiency to top it off.
 

xpea

Senior member
Feb 14, 2014
449
148
116
Nvidia's design is a lot more simpler, focused on the needs of now, rather than in 2 years time. So their GPU's are best optimized for DX11, while engineered to do decent enough in DX12/Vulkan. Their next generation will most likely focus a lot more on Vulkan and DX12, which would be the now in about a year's time.
From the information I have, Geforce Volta runs in circles around Vega in DX12. So much difference that current Vega 64 DX12 benches are at GV106 level !!!
It will be very ugly for Vega when Geforce Volta will land...

Edit: to be more precise, the (only) info I have is about Time Spy scores

Edit2: The main difference between Nvidia and AMD is that the green team focus on hardware performance that can be easily extracted by the software, when the red guys put lot of hardware stuff that demands too much software work and dev support. And its a big big big issue
 
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Headfoot

Diamond Member
Feb 28, 2008
4,444
641
126
About the ngg path.
From amd whitepaper
http://radeon.com/_downloads/vega-whitepaper-11.6.17.pdf

"This next-generation geometry (NGG) path is much more flexible and programmable than before. To highlight one of the innovations in the new geometry engine, primitive shaders are a key element in its ability to achieve much higher polygon throughput per transistor. Previous hardware mapped quite closely to the standard Direct3D rendering pipeline, with several stages including input assembly, vertex shading, hull shading, tessellation, domain shading, and geometry shading. Given the wide variety of rendering technologies now being implemented by developers, however, including all of these stages isn’t always the most ecient way of doing things. Each stage has various restrictions on inputs and outputs that may have been necessary for earlier GPU designs, but such restrictions aren’t always needed on today’s more flexible hardware.

“Vega’s” new primitive shader support allows some parts of the geometry processing pipeline to be combined and replaced with a new, highly ecient shader type. These flexible, general-purpose shaders can be launched very quickly, enabling more than four times the peak primitive cull rate per clock cycle. In a typical scene, around half of the geometry will be discarded through various techniques such as frustum culling, back-face culling, and small-primitive culling. The faster these primitives are discarded, the faster the GPU can start rendering the visible geometry. Furthermore, traditional geometry pipelines discard primitives after vertex processing is completed, which can waste computing resources and create bottlenecks when storing a large batch of unnecessary attributes. Primitive shaders enable early culling to save those resources."



Well they better get that to work !

So basically, AMD designed a headline performance feature which would likely have made a huge difference in some scenarios, then launched the product with that headline performance feature disabled. The Software side foils AMD yet again.
 

Rifter

Lifer
Oct 9, 1999
11,522
751
126
So basically, AMD designed a headline performance feature which would likely have made a huge difference in some scenarios, then launched the product with that headline performance feature disabled. The Software side foils AMD yet again.

Really when you think about it they screwed up every aspect of this launch:


1. Software not ready, major features disabled. Check
2. Not enough stock. Check
3. Cant control Prices and cards already selling $100+ over MSRP. Check
4. Power consumption out of control vs competition for same or less performance . Check
5. Broken MSAA(the most useful and used AA implementation) taking performance 20-30% below the competition in most games when using MSAA. Check
6. Outright lied about releasing a top tier gaming card, this fits into Nvidias stack as competing with their 3rd highest performing card, using marketing like "poor volta" is just ridicules when the card isnt even fast enough for them to use poor pascal as marketing propaganda. Check
 
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Headfoot

Diamond Member
Feb 28, 2008
4,444
641
126
When it was already a year late they should have just waited and fixed up the last remaining issues. Stuff like that is forgivable if you launch first, and a total joke if you launch a year after a competitor where the product cycle is a year long.

They also just immediately squandered hard-won reputation from Ryzen with a garbage launch for a mediocre product. Whether it eventually becomes a decent product with the issues and features fixed - who knows - but you get only 1 first impression.
 
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LightningZ71

Golden Member
Mar 10, 2017
1,659
1,944
136
I feel that their biggest mistake with Vega was a mistake of product placement and marketing. If they had instead released it as a "prosumer" compute and feature card that also happened to be able to game well enough to be relevant, then a lot of the butthurt out there would be diminished. As we're seeing, it mines reasonably well (though not as power efficiently as desired) and it seems capable of high end OpenCL computing within its price range. If it was sold for that purpose, instead of as a gaming card first, I think the reaction would have been more... charitable. Plus, it would give them extra volume to continue to work out software and gaming bugs.
 
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CatMerc

Golden Member
Jul 16, 2016
1,114
1,153
136
It is hard to take a hot, power hungry, large die sized card that arrived a year late and expect AMD to suddenly alleviate at least one of these main drawbacks or pull a 1080ti competitor out of their hat. I understand why people conceive of this fairy tale, but it is simply not a grounded concept. It appears to me that AMD is now in the same spot versus NVIDIA that it was in versus Intel a decade ago. In my opinion, Vega is the Polaris to NVIDIA's Volta, arrived early. People just do not know that yet.
I mean, it happened. GTX 480 vs GTX 580 was the prime example.
 

ozzy702

Golden Member
Nov 1, 2011
1,151
530
136
I mean, it happened. GTX 480 vs GTX 580 was the prime example.

Except this time around Vega was produced on a very mature node vs. the 480. The 580 was released within a six months of the 480 and roughly a year from initial small die 40nm gpus.

Vega should already be dialed in for yields, performance and power consumption at this point just from a hardware perspective, let alone the software. Vega is stillborn and I don't expect much if anything from AMD until Navi.
 

CatMerc

Golden Member
Jul 16, 2016
1,114
1,153
136
Except this time around Vega was produced on a very mature node vs. the 480. The 580 was released within a six months of the 480 and roughly a year from initial small die 40nm gpus.

Vega should already be dialed in for yields, performance and power consumption at this point just from a hardware perspective, let alone the software. Vega is stillborn and I don't expect much if anything from AMD until Navi.
The biggest difference didn't come from yields. 580 was the first time they used custom cell libraries in manufacturing, which still goes on today.

AMD uses standard cells AFAIK.
 

raghu78

Diamond Member
Aug 23, 2012
4,093
1,475
136
Except this time around Vega was produced on a very mature node vs. the 480. The 580 was released within a six months of the 480 and roughly a year from initial small die 40nm gpus.

Vega should already be dialed in for yields, performance and power consumption at this point just from a hardware perspective, let alone the software. Vega is stillborn and I don't expect much if anything from AMD until Navi.

The biggest problem with Vega seems to be driver software which does not enable the most important Vega hardware features. AMD has 6 months to sort that out before Volta arrives. The next is HBM2 yields/ clocks and features like pseudo channel mode being disabled. Fixing those should improve memory bandwidth and bring slight power improvements. The last is the process. Vega is likely to receive a respin on a higher performance 14nm+ process. The likely candidates for the process are GF 14HPP or Samsung 14LPU.

http://www.anandtech.com/show/11404/amd-updates-gpu-architecture-roadmap-after-navi-comes-next-gen

The combination of all these 3 could make Vega perform significantly better. Would it be enough to compete against Volta. No idea.
 

.vodka

Golden Member
Dec 5, 2014
1,203
1,537
136
AMD had better use some of the sweet money Ryzen is making for them, and hire more software guys if they want RTG to do their best.

This is unacceptable.
 
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