AMD Cayman info (or rumor)

[flopper]

way to troll...

No sense of humor m8?

Cayman has 20% less die space for the same performance as cypress with a rearranged shader and more tesslation and if amd stick to the small is better routine, it dosnt get us a lot more especially on 40nm, what else is there?

Now, I provided more information there than your silly troll comment.

If AMD did remove their gloves and went with a bigger chip and a higher price range which they might have to pull a all out card for this generation then a r300 might be had but that is unlikely.

They also have to redo the drivers due to the new shaders which allow for a improved performance over time even if cayman was planned for 32nm and that work been done for over a year its still takes a lot of time writing drivers well.

Gee, I provided even more information than your silly comment.

Due to none knows what is going on, did amd send out a limited gimped 6950?
With less shaders?
Calling it a XT?

How effective is the new shader arrangement and what have they tweaked and changed due to the 40nm situation?

You are in effect displaying the troll behaviour providing no information or speculation about amd new set generation cards, youdisplay the troll behaviour with such statements.
If people dont understand that, they really should check up their logic.
http://en.wikipedia.org/wiki/Troll_%28Internet%29

Dave Bauman is hiring a new suit, as he is going on stage to present his latest, correction AMD´s latest card and new generation he looks over the forum at beyond3D and shakes his head how off they been with their speculations. The shadows grow darker, the cloak and dagger crew is going back to their hiding, time for a new day to shine the light.
Maybe we save the whales one day but not today.
He walks out, the flashes of light, the press, the expected journalists, signed their NDA and now its time for the world to know.

Much more fun than saying, way to troll... dont you think?

Have fun, life to short.
if you dont think that, Gee...your missing out on life.

[generics_user]

* 2.15 billion 40nm transistors
* TeraScale 2 Unified Processing Architecture
o 1600 Stream Processing Units
o 80 Texture Units
o 128 Z/Stencil ROP Units
o 32 Color ROP Units
* GDDR5 interface with 153.6 GB/sec of memory bandwidth
* Engine clock speed: 850 MHz
* Maximum board power: 188 Watt

so according to current rumors 6950s raw processing power (1536 SPs) is 10% higher than 5870; together witht he supposed to be more efficient shader setup this thing should be able to beat the 480 and 6970 should be on par with the 580 (if we consider the gap between 50 and 70 cards of previous series)

[Lightman]

so according to current rumors 6950s raw processing power (1536 SPs) is 10% higher than 5870; together witht he supposed to be more efficient shader setup this thing should be able to beat the 480 and 6970 should be on par with the 580 (if we consider the gap between 50 and 70 cards of previous series)

Current rumor is 6970 has 1536SP and 96TMU.

[Mechanical Man]

Muropaketti said that AMD sent ~1600sp cutdowns to partners.

It might very well be, that other partners got other sized gpus's so, that any leak
a) could be traced
b) in case of more than one leak, would contradict themselves.

[cowie]

It would be fail for amd to have all new acrhitecture(sry lazy) and still not beat an old hot chip like the 580,to take fastest single cored chip.

maybe by xmas we see some chips
-----------
fudzilla
Friday, 05 November 2010 10:23 Cayman might not make it for 22nd Nov launch
Written by Fuad Abazovic
No final bios, cards, partners grumpy

Sources on a small island that doesn’t get along well with red China are informing us that Cayman has little chance to make the scheduled November 22nd launch.

The situation doesn’t look good as the final chip never made it to partners and the final boards are not ready yet. Partners do have early samples, but our sources assured us that there is no final bios and that drivers are not ready.

Just to assure you that this is not Nvidia talking, these guys are all unhappy as they were supposed to get some good sales numbers over the holiday season, as quite a few of people are excited about Cayman.

As of today, November 5th, at least some of the mayor players have no cards, no final bios and no drivers. They are saying the way things worked in the past they would have a small miracle to have full availability at launch. Of course, it's possible that the launch will proceed as expected, but availability is the key issue at this point.

We are sure that many will burn the messenger, but there is nothing we can do about it. We can only hope that we will see some Cayman cards selling in December.

[generics_user]

Muropaketti said that AMD sent ~1600sp cutdowns to partners.

It might very well be, that other partners got other sized gpus's so, that any leak
a) could be traced
b) in case of more than one leak, would contradict themselves.

quite possible; they could send these cut down chips for board validation, fully equipped ones for production (without a working BIOS) and the final BIOS just in time to flash the completed cards and ship them as fast as possible, partners may not like that but it's an explanation for the lack of information

the other possibility is that AMD has some problems with the cards and can't ship in time...

[Macadamia]

Muropaketti said that AMD sent ~1600sp cutdowns to partners.

It might very well be, that other partners got other sized gpus's so, that any leak
a) could be traced
b) in case of more than one leak, would contradict themselves.

Well they sent 800SP Barts.. reason why XFX had 800 on their spec sheets.

[halfwaythere]

Assuming the 580 is hot and old might be the biggest mistake AMD can make. Cayman XT needs to be on par with the 580 otherwise nvidia is going to sell them for as much as they want for a pretty long while.

[Dimitriman]

jeez nvidia really has achieved some success in making 5970 and consequently Antilles "not exist".

[zalbard]

Current rumor is 6970 has 1536SP and 96TMU.

Hope that's not true... I have my 1600sp 5870 for way too long, lol. Would feel like a downgrade...

[Iconyu]

jeez nvidia really has achieved some success in making 5970 and consequently Antilles "not exist".

They know AMD probably won't release the final specifications before the 580 reviews. Like S|A I don't think these actions are for the benefit lowering AMD sales, or getting customers excited, if they wanted that they'd release after AMD or closer to the 22nd.

If AMD don't feel the need to do so then they must be confident Cayman is at the performance level they need against the 580. Both sides probably have some idea of what the other has, but I suspect nvidia has confirmed some of that info for AMD while AMD haven't done the same for nvidia.

[Picao84]

I dont believe that 1536 SP number.
Why? Because if that is true, Cayman will not have more shader power than Cypress. Charlie Demerjian went on record saying that 4 Cayman shaders represent roughly 98% of the Cypress 5+1 combination.

1536 SP is rather close to 98%, being 96%. If that is case, Cayman performance will depend a lot on uncore parts of the chip, probably, because shader power will stay the same. I have a hard time coping with that.

[SpuTnicK]

Cypress has VLIW5 SP arch. : 1600/5=320SP and 80TMU
Cayman has VLIW4 SP arch. : 1536/4=384SP and 96TMU
So the difference is obvious

[informal]

Cypress has VLIW5 SP arch. : 1600/5=320SP and 80TMU
Cayman has VLIW4 SP arch. : 1536/4=384SP and 96TMU
So the difference is obvious

I doubt that Cayman,with all the talk about its bigger die,will have less SP than Cypress.It could be that each new SP is noticeably bigger than in Cypress though,but I can't see that being the case.

[saaya]

Current rumor is 6970 has 1536SP and 96TMU.

weird sp to tmu ratio, no?
and if thats all, then wow... it almost doesnt deserve the 6000 name if you ask me :/

[Picao84]

Cypress has VLIW5 SP arch. : 1600/5=320SP and 80TMU
Cayman has VLIW4 SP arch. : 1536/4=384SP and 96TMU
So the difference is obvious

Again, following the logic of 4 Cayman shaders being roughly equal to Cypress 4+1, where is the obvious difference in SHADER POWER?
If there was not this "little" detail give my Mr. Charlie Demerjian who is quite fond of ATI/AMD, you would be quite right.
Still, ignoring what he said, more 64 shaders is only 20% more shader power than Crypress, which its probably not enough to beat GTX580, with the data we have available. I refuse to believe it, and im an nVIDIA fan

[Mechanical Man]

Cayman has 1920 shaders in 4VLIW configuration. Those rumours are based on saples AMD has sent, that has been cutdown. Same as with Barts.

[RaZz!]

weird sp to tmu ratio, no?
and if thats all, then wow... it almost doesnt deserve the 6000 name if you ask me :/

we're in a pretty strange situation atm.

amd went with 2-architectures (vliw5 and vliw4) for their 6000 series so it's pretty hard to derive the performance of cayman from the already released barts.
then there are rumors cayman will have a huge die - if we now consider that barts is smaller than cypress, amd needs to put a lot more stuff into cayman to reach "a huge die".

on the other side of the gpu-river we have nvidia with their gtx580 - "a fixed fermi"? nobody really knows, but i really doubt that nvidia had enough time to really improve fermi that much since its release.
so what does the gtx580 offer to deserve being part of a 500 series? there must be more to it as well.

when the first tangible 6000 series rumors hit the web a lot of people asked why barts/cayman deserves to be a new series. but if you now compare what we know about 6900 and gtx580, i really think that the 6000 series deserves its name more than the gtx580 does.

i really hope all these questions will be answered at the end of november, after both companies presented/released their new high-end. it just sux to stumble in the dark like this :F

[spursindonesia]

I'm kinda doubting that leaked info saying Cayman would have lesser SPs than Cypress. Yes, with improved mArch & 4D shader array design, it might still achieve better performance overall in gaming vs Cypress, but that would mean the chip won't improve its SP Flop performance if the clock stays around the same. The DP Flop ofcourse improves, but still .....

[Solus Corvus]

Maybe supply is low and some partners have only gotten 6950 (1536 shader) equivalent cards.

Though a difference of 25% shaders between 6950 and 6970 seems like too much.

[hurrdurr]

Cypress has VLIW5 SP arch. : 1600/5=320SP and 80TMU
Cayman has VLIW4 SP arch. : 1536/4=384SP and 96TMU
So the difference is obvious

If all in all Cayman has less transistors dedicated to shading, where does the rumored increase in GPU die size (from 5870) come I wonder?

320 vs 384 means a 20% increase in speed. Considering that 6870 newly increased performance/watt, there is no way 6970 will be 250W but will perform only 20 to 25 percent better than 6870 which is 150W. And the card is 8 + 6 pin which would put its TDP definitely above 225W.

I don't buy that Cayman will be 1536sp.

[Dimitriman]

cumon guys.. info on barts was only accurate 2-3 days before launch. till then many were claiming 4d on it as well. AMD spreads dissinformation before every launch, I doubt that number going around is true. youd think people learn from past experience.

[zerazax]

cumon guys.. info on barts was only accurate 2-3 days before launch. till then many were claiming 4d on it as well. AMD spreads dissinformation before every launch, I doubt that number going around is true. youd think people learn from past experience.

RV770 480SP's anyone?

This would be awesome if it were the same situation

[informal]

RV770 480SP's anyone?

This would be awesome if it were the same situation

I think it's exactly the same situation

[SpuTnicK]

Here is another idea:
Barts XT has VLIW5 SP arch. : 1120/5=224SP and 56TMU
Cayman has VLIW4 SP arch. : 1536/4=384SP and 96TMU
Then Cayman has 71% more SP than Barts.
So is it possible than Cayman is 70% faster than Barts?
If that so then Cayman performs similar to 2xBarts Pro (Barts Pro has VLIW5 SP arch. : 920/5=192SP and 56TMU)