Question Speculation: RDNA2 + CDNA Architectures thread

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uzzi38

Platinum Member
Oct 16, 2019
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All die sizes are within 5mm^2. The poster here has been right on some things in the past afaik, and to his credit was the first to saying 505mm^2 for Navi21, which other people have backed up. Even still though, take the following with a pich of salt.

Navi21 - 505mm^2

Navi22 - 340mm^2

Navi23 - 240mm^2

Source is the following post: https://www.ptt.cc/bbs/PC_Shopping/M.1588075782.A.C1E.html
 

Glo.

Diamond Member
Apr 25, 2015
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6800 - 60 CU GPU with performance 10% above RTX 2080 Ti/RTX 3070, for 80$ more.

I think its a fair deal. Would be better if they would price it at 499-549$, tho...
 

GoodRevrnd

Diamond Member
Dec 27, 2001
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That GPU direct memory access feature is interesting. I'd be concerned about stability on soemthing new like that. At the same time, killer feature, in some ways up there with nVidia levels of dirtiness without resorting to stupid proprietary features. Were their benchmarks presented with or without that enabled?
 

GoodRevrnd

Diamond Member
Dec 27, 2001
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The 6900XT results are using rage mode and the smart access memory with zen3.
Ah lame. +$300 for a 6900XT doesn't seem remotely worth it then. They must be better binned chips to be hitting the same TBP, but I suspect enabling the same features between both and OCing to the gills will net a pretty minor dif between 6800/6900.
 

soresu

Diamond Member
Dec 19, 2014
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Nice to see that DirectStorage API feature made it into RDNA2, I was worried that it wouldn't with all the SSD focused gaming bonanza.
 

GaiaHunter

Diamond Member
Jul 13, 2008
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6800 - 60 CU GPU with performance 10% above RTX 2080 Ti/RTX 3070, for 80$ more.

I think its a fair deal. Would be better if they would price it at 499-549$, tho...
Unfortunately the market never rewarded AMD for big price/performance, so they only give enough value to pull those that can either go green or red.
 
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Mopetar

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Jan 31, 2011
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This is all awesome and all but I hope it won't take another 6 months to see 6700 XT break cover, papa needs his low power upgrade swag.

They're probably saving some stuff for CES and want to clear out all of the RDNA1 and Polaris cards over Black Friday.

I think we'll see those cards rather early in 2021, especially once the initial console production ramp slows down and more wafers become available for other products.
 

Avalon

Diamond Member
Jul 16, 2001
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6800 - 60 CU GPU with performance 10% above RTX 2080 Ti/RTX 3070, for 80$ more.

I think its a fair deal. Would be better if they would price it at 499-549$, tho...

Yeah, I saw that 60CU and performance and the $579 price tag and thought...hmm, missed opportunity to really kill it and price it at $499. Guess they're just trying to maximize ASP though. I would have been reeeeeal tempted at $499. Instead I'll wait to see what the 6700XT can do.
 

Hitman928

Diamond Member
Apr 15, 2012
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Overclocked vs stock was a little biased on the slide though.

Yeah, I missed that initially, but again, the 3090 pulls over 25% more power than the 6900XT at stock (assuming the TBP is enforced) and the 3090 barely gains anything from overclocking, so there's room power wise for AMD to match the 3090, but we'll have to see how they stack up when the reviews drop. The main thing though is that it comes at 2/3 the price.
 

Saylick

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Sep 10, 2012
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https://www.anandtech.com/show/1620...-starts-at-the-highend-coming-november-18th/2

RX6800_11_575px.jpg


So out of that 54% PPW gain, looks like 35-40% is from the Infinity Cache (~19-21% PPW uplift) and the rest is from silicon level / architecture optimizations (~33-35% PPW uplift).

RDNA 2 is literally AMD's Maxwell.

RX6800_10_575px.jpg


RX6800_09_575px.jpg


RX6800_08_575px.jpg
 
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blckgrffn

Diamond Member
May 1, 2003
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www.teamjuchems.com
Yeah, I saw that 60CU and performance and the $579 price tag and thought...hmm, missed opportunity to really kill it and price it at $499. Guess they're just trying to maximize ASP though. I would have been reeeeeal tempted at $499. Instead I'll wait to see what the 6700XT can do.

You're doing it wrong.

Realize how close the 6800 is to 6800xt is price wise, realize how much sweeter that extra performance is and justify spending not $499 but $649! ;)
 

Stuka87

Diamond Member
Dec 10, 2010
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Ah lame. +$300 for a 6900XT doesn't seem remotely worth it then. They must be better binned chips to be hitting the same TBP, but I suspect enabling the same features between both and OCing to the gills will net a pretty minor dif between 6800/6900.

Its a much better deal than going from a 3080 to a 3090, which is an $800 difference. ($700 vs $1500)
 
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soresu

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Dec 19, 2014
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If i remember correctly, since they acquired ATI, they had NEVER used an AMD CPU to test the new Radeons.
That also tells me Ryzen 5000 is killing it
If nothing else because nVidia will have been testing their own cards on Intel up until now so AMD had to have a level playing field to test their own cards.

It will be interesting to see what nVidia uses in the future - would be delicious to see them forced to use AMD Ryzen in time.