Vega/Navi Rumors (Updated)

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Bacon1

Diamond Member
Feb 14, 2016
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railven said:
And then when someone tries to make a estimation using Fury X "you can't, different uarchs, IPC gains" list goes on.
Click to expand...

¯\_(ツ)_/¯

We are saying at worse case its a die shrunk Fiji @ 1600 clocks vs 1050. Same amount of core shaders, rops, etc from what we've seen from the specs so far. We know the power usage is under 400w let alone 500w and we've already seen very good performance from it as well.

Do you honestly expect there to be lower IPC on Vega over Fiji??
 
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tajoh111

Senior member
Mar 28, 2005
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Bacon1 said:
¯\_(ツ)_/¯

We are saying at worse case its a die shrunk Fiji @ 1600 clocks vs 1050. Same amount of core shaders, rops, etc from what we've seen from the specs so far. We know the power usage is under 400w let alone 500w and we've already seen very good performance from it as well.

Do you honestly expect there to be lower IPC on Vega over Fiji??
Click to expand...

One thing that hurts scaling for AMD this time around is the memory bandwidth.

Rx vega has 480gb/sec of bandwidth. This is less than the original fury X at 512gb/sec and also less than double polaris which rx vega has more than twice the tflops of. Add in Polaris was a bit memory starved, as adding only a memory overclock helped performance 6% and I would feel more confident in Vega scaling if it received the same boost in bandwidth as the core clock i.e 773gb/sec of bandwidth to match the 52% increase in tflops.

https://www.computerbase.de/2016-06/radeon-rx-480-test/12/
 
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dacostafilipe

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Oct 10, 2013
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tajoh111 said:
One thing that hurts scaling for AMD this time around is the memory bandwidth.
Click to expand...

I think that the increased L1/L2 cache and the improved memory compression tech should level that out. Will it be enough? No idea ... they certainly aimed at higher speeds.
 
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iwulff

Junior Member
Jun 3, 2017
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tajoh111 said:
One thing that hurts scaling for AMD this time around is the memory bandwidth.

Rx vega has 480gb/sec of bandwidth. This is less than the original fury X at 512gb/sec and also less than double polaris which rx vega has more than twice the tflops of. Add in Polaris was a bit memory starved, as adding only a memory overclock helped performance 6% and I would feel more confident in Vega scaling if it received the same boost in bandwidth as the core clock i.e 773gb/sec of bandwidth to match the 52% increase in tflops.

https://www.computerbase.de/2016-06/radeon-rx-480-test/12/
Click to expand...
Vega uses further optimized compression technique compared to Polaris. Doesn't that save some bandwidth? Also why would a memory overclock with good performance gains indicate a bandwidth issue. Wouldn't the reserved be true?
 
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SimianR

Senior member
Mar 10, 2011
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I'm confused as to why they decided to half the size of the memory bus on Vega compared to Fury? From the sounds of it this thing is still going to draw power like crazy so it doesn't seem like there was any huge power savings there. I guess using HBM2 offset the reduced bandwidth but I still wonder overall if the choice to use HBM/2 at all was the right one, especially with all the delays.
 
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Mopetar

Diamond Member
Jan 31, 2011
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The brushed aluminum does look nice, but I'm not a big fan of the color scheme. I don't think they'll keep the aluminum for the RX line, but the same Vega logo in red would look great on black.
 
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tviceman

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Mar 25, 2008
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Bacon1 said:
Because TFLops != gaming performance at all. Its literally just the clocks * core count and ignores arch and the rest of the hardware required for gaming needs.

Trying to match TFLops to gaming performance for different architectures doesn't make any sense at all.
Click to expand...

Which is exactly what you tried to do in the post I quoted you!!
 
F

Face2Face

Diamond Member
Jun 6, 2001
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Mopetar said:
The brushed aluminum does look nice, but I'm not a big fan of the color scheme. I don't think they'll keep the aluminum for the RX line, but the same Vega logo in red would look great on black.
Click to expand...

The RX cards from this pic look to be black and white. Very good looking cards IMO.

AMD-Radeon-RX-Vega.jpg
 
T1beriu

T1beriu

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Mar 3, 2017
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It seems that Vega FE is cheaper than believed. -$999/1499.
AMD PR said:
Radeon Vega Frontier Edition graphics cards are available from etailers in select regions today with an SEP of $999 USD for the air-cooled edition. The water-cooled edition is expected to launch in Q3 with an SEP of $1499.
Click to expand...

Source.

Vega FE comes with multiple driver options.
Radeon™ Vega Frontier Edition introduces “Gaming Mode”. This allows you to switch from Radeon™ Pro Settings to Radeon™ Settings where you can access gaming features for playtesting and performance optimization.
If you are focused on game development on a Windows® platform, get your driver here and switch to “Gaming Mode.
Click to expand...

radeon-vega-frontier-edition-software-blog-game-development.jpg


LE: Other interesting tidbits.
Typical Engine Clock 1382 (MHz) / Peak Engine Clock 1600 (MHz)
Click to expand...

LE2:

DP ratio is 1/16.
Typical Board Power (not to be confused with TDP) is <300W.
Memory type: HBC (High Bandwidth Cache, not HBM2).

Source.

radeon-vega-frontier-edition-software-blog-virtual-reality2.jpg
 
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T1beriu

T1beriu

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Mar 3, 2017
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swilli89 said:
Apparently Vega wasn't sampled to anybody and we probably don't get anything today. Ryan at Anandtech just confirmed this minutes ago.
Click to expand...

I'm pretty sure that's because AMD hasn't finalised optimizing the gaming drivers, thus performance is looking really bad vs the competition and the card would be getting bad press. Or the stock is very low and they don't need reviews out yet because the cards will be sold out soon.
 
swilli89

swilli89

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Mar 23, 2010
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T1beriu said:
I'm pretty sure that's because AMD hasn't finalised optimizing the gaming drivers, thus performance is looking really bad vs the competition and the card would be getting bad press. Or the stock is very low and they don't need reviews out yet because the cards will be sold out soon.
Click to expand...
Could be either of the two, or possibly both are true which is likely. At this point I'd take even a Doom Vulkan benchmark if we could get ANY meaningful numbers. I think most know I want AMD to succeed if nothing else than for renewed competition but this launch is just confounding.. what are they thinking right now?
 
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Bouowmx

Golden Member
Nov 13, 2016
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Typical engine clock-Peak engine clock (MHz): 1382-1600

Next pressing question is how sustainable the peak frequency is.
 
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Mopetar

Diamond Member
Jan 31, 2011
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Disappointing that there aren't any review units going out. Hopefully people who pre-ordered get their cards and can start posting benchmarks just to give us an idea of what kind of baseline performance we can expect.

Yes, we can always use "the drivers aren't ready" excuse, but at this point AMD should have had near-enough final hardware for months, so I question how much of an improvement we can realistically expect in a month. The anecdotal reports from the recent previews suggested that it's probably closer to the 1080Ti in performance than a 1080, so if AMD can ship RX Vega at $600, I think it can still be a successful product.
 
railven

railven

Diamond Member
Mar 25, 2010
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T1beriu said:
It seems that Vega FE is cheaper than believed. -$999/1499.


Source.

Vega FE comes with multiple driver options.


LE: Other interesting tidbits.


LE2:

DP ratio is 1/16.
Typical Board Power (not to be confused with TDP) is <300W.
Memory type: HBC (High Bandwidth Cache, not HBM2).

Source.
Click to expand...
Now this is interesting to me. Does this imply that the Vega FE will be compatible with standard Radeon drivers? I wonder if this means we can get some good gaming performance estimations from it (yes yes, caveat, might not be finalized drivers.)

Let's get this party going!
 
H

Head1985

Golden Member
Jul 8, 2014
1,864
689
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drivers are ready for vega for gaming.Someone buy that thing and test it
http://support.amd.com/en-us/download/frontier?os=Windows+10+-+64

I Am Focused on Game Development Workloads
Radeon™ Vega Frontier Edition introduces “Gaming Mode”. This allows you to switch from Radeon™ Pro Settings to Radeon™ Settings where you can access gaming features for playtesting and performance optimization.
If you are focused on game development on a Windows® platform, get your driver here and switch to “Gaming Mode.”

I Just Want to Game
If you want to game on a Windows® platform, get your driver here and switch to “Gaming Mode.”
Click to expand...
http://pro.radeon.com/en-us/product/radeon-vega-frontier-edition/
 
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