do we know the bitrate of caymen xt, or just assuming it?
i would think that 256bit might be enough with some really fast memory (hopefully thats why they put the cheap crappy stuff in barts)
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do we know the bitrate of caymen xt, or just assuming it?
i would think that 256bit might be enough with some really fast memory (hopefully thats why they put the cheap crappy stuff in barts)
The only official info is that memory will start at 1gb and have speed of 6 Gbps. For such absurd speeds I think its likely to remain 256 bit.Quote:
Originally Posted by Manicdan
Holy Jesus! That chip is BIG! :shocked:Quote:
Originally Posted by cold2010
Wasnt expecting something so big coming from AMD :eek:
I dont believe in Antilles being 2x Cayman, with a big die like that...
oh snap 2gb standard popping up thats pretty cool. 32 rops though? can that be right? seems too little for cayman.
Need I remind you the GTX295 was 2x GTX275's? :rolleyes:Quote:
Originally Posted by Picao84
That was on 55nm process, which didnt have as much problems as 40nm has.Quote:
Originally Posted by Yvese
2 GB VRAM, that's cool, fits right in with its status as enthusiast level card, AMD's back in highend single GPU arena. :D
Im pretty sure they have worked out most problems by now. Rest can be taken in account when design of gpu is made.Quote:
Originally Posted by Picao84
That's really sweet. Can't wait for it to come out! :up:
It looks like AMD held no brakes when it came to Cayman. The next shock for nV will proly be Cayman die size and performance.
doesnt anyne else find this 32 rops number too low?
VLIW4
New architecture anyone?
Anyone has the original source (says there expreview on all 3 photos).
By the way, there is absolutely no indication of how big Cayman is on that photo, in case someone is claiming "THAT CHIP IS HUGE!!one".
Looks almost as big as a GF100. If AMD can keep up their perf/mm^2 this thing will surpass GTX 580 easily.
Keep in mind this is AMD's 3rd 40nm generation (RV740 -> Evergreen -> NI) so its in much better shape than NvidiaQuote:
Originally Posted by Picao84
VLIW4 means new architecturfe. This thing is going to be a BEAST
VLIW4? I call BS.Quote:
Originally Posted by cold2010
Why?Quote:
Originally Posted by ColonelCain
The drivers say at least 2 cards are going to be VLIW4 within NI, and since its not Barts but we have Cayman and Antilles to come...
If this thing is indeed VLIW4 and has 1920SP,it's game over for any GF1xx chip,no matter if it has full 512 CUDA cores and high clock. With Cayman XT on the market,Cypress is going to be lowered in mid-high class and GTX480 as well.Antilles will be uber high end,in a class of its own,in line with Chuck Norris comments we already saw.
Can you educate or expand on VLIW4 I'm not familiar with this.Quote:
Originally Posted by informal
The box shape in the middle of the PCB isn't the chip itself, but the substrate/packaging size with its corresponding pin out. The chip itself would be rotated 45 degree in orientation, just like Cypress and Bart, and if you look further behind, R600. I still believe the chip won't be bigger than 400 mm^2, with TDP no higher than 230 w.
Yeah now that I look the pcb doesn't seem that much longer than a 6870.
Rop count seems a bit low, but who knows how it works with the VLIW4 architecture. 2 GB reference is nice though.
8 phase power on stock pcb. yum!
Whooa, looks sweet!
So educate me on what VLIW4 is...
Do you remember all the 4D instead of 5D shader rumors for the HD68xx? If I'm not mistaken, it's that. Charlie wrote a bit on it here:
http://www.semiaccurate.com/2010/09/...thern-islands/
But, as we already know, it didn't turn out true for the HD68xx cards.
For people who dont know AMD used 5 way design's for most of the cards till now including the 68xx now VLIW4 is different in several ways.
The easiest way to tell the difference is that VLIW4 is suppose to use 4 medium sized units where as the old 5 way design used 1 big and 4 small units.