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Latest buzz describes a pretty powerful card, but could delays be holding it back?
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Latest buzz describes a pretty powerful card, but could delays be holding it back?
"thats what makes you larger than liiiiffeee"
wow that really is massive!
Thats what she said...Quote:
Originally Posted by Biscuit
It could point to a TDP up to 300W, but it could equally well point to a TDP of 226W, in the same way that the 6870 has 2x 6pin connectors but a TDP of 151W...Quote:
The combination of a six- and an eight-pin PCIe power connector also suggests that the card may come close to the suspected 300W TDP.
glad someone catched onto my post :)Quote:
Originally Posted by Terbinator
brilliant song :rockon:
It could also equally well be quite a bit under 225W, AMD aren't a company afraid to support overclocking, Nvidia do not support overclocking under warranty AT ALL, AMD have built in overclocking thats warrantied in the default CCC install. They give you between 5-10% free depending on the card.Quote:
Originally Posted by scaryjim
In other words, they know that if they made a 200W card, that putting only 2x6 pci-e power connectors on it would stop it ever being a great overclocking card, and stop any LN2 type guys having a chance of getting a 6970 to the top of Futuremark score boards, and various other benchmarks.
In reality though I expect it to be 230W maybe, potentially if the 580gtx is a little faster than expected they might raise clocks slightly. Basically I'd be incredibly shocked if it was anywhere near 300W at stock, unless of course its some 1920 shader 60-70% faster than a 5870 beast, in which case, it would be using the extra power effectively. 234W would be what i'd bet on ;)
The leaked shader count is also rather stupid, its very possible, but we know of two leaked cards with 860 and 890Mhz, the other thing we know is AMD are ULTRA secretive about their GPU launches and have admitted in articles to sending out several various versions of samples so if any leaks happen they can pinpoint who they gave a card with those specs to.
So theres cards with various clock speeds, and probably cards with various shader counts, they don't want Nvidia to know how fast it is, they could be sending out Cayman pro's but telling people they are Cayman XT's, and on launch we see Pro's have 1536 shaders, and Xt's have 128shaders more(assume 64 shaders to a cluster), maybe double that more, who knows.
As for the 1/2gb thing, its almost certainly going to be 2gb, 1gb in the opencl benchmark I'm told is because the benchmark doesn't address or read more than 1gb at this time, so would read 1gb on a 480gtx aswell, or a 2gb 6970 for instance....... I don't know how true that is as I've never run it though.
http://www.electronista.com/articles....hard.details/
is saying that TSMC are running into fab issues again - with only 10% of the cores being acceptabe for AMD; AMD have started buying wafers this time around (nv do the same with the GF100) so if this is the case someone , somewhere will be gettng an ear bashing
http://www.brightsideofnews.com/news...-analysis.aspx
link for wafer purchase
If it does have 1536 shaders that means it's switched from the 16 x 4+1 layout of the 4000, 5000, and 68x0 cards, to a 16x4 layout with the new-style shaders. Are we really meant to believe that AMD are going to have two completely different architectures in the same generation of graphics cards? Because I personally find that unlikely...
Wasn't it meant to be that the shaders in the 69XX cards were from the Southern/Northern Island parts (brought forward when the die shrink was delayed) and the rest were from the Evergreen parts?Quote:
Originally Posted by scaryjim
I thought it was the other way round a la 68x0 (i.e. a new front end (better tesselation engine etc.) but with the old shaders), but perhaps that was *just* for the 68x0 and the other 6-series cards will be an all new design. Or perhaps that 68x0 front end is just a tweak? *shrug* I've given up trying to work out what's happening, I think, and will wait for the reviews ;)
One interesting thing in HJs first leak is that the shading:texture ratio should improve on the new architecture (16:1 down from 20:1) - IMNSHO this was a bit of an achilles heel of the 4- and 5-series cards...