dividebyzero
Posts: 4,840 +1,279
Cayman XT. XT = HD xx70, Pro = HD xx50Is this supposedly the Cayman pro or the XT?
Why? These cards are tweaks of an existing architecture. Expecting some kind of massive performance jump using the same arch at the same process node doesn't happen anywhere except the wet dreams of fanboys.I find it hard to believe it's the XT.
Because then one side can put their best single card (regardless of the fact that it runs 2 GPU's) up against the other sides best single card and chant "Mine's bigger" (see HD4870X2 v GTX 280, GTX 295 v HD4870X2, HD 5970 x GTX 480 for historical comparison).Either way if they put 2 cards together (Antilles) that only matches or barely beats the 480 sli..what would be the point?.
And No, Antilles won't be Cayman based. Antilles (HD6990) will likely be dual Barts XT (HD 6870)with either GPU's binned for high leakage and/or downclocked to meet the PCI-E specification of 300 watts.
Barts XT = 163w x 2 = 326w...right ballpark for dual GPU once cherry-picked GPU's are used
Cayman Pro = ~215w x 2 = 430w...Fail.....although these is the supposed GPU's to be used in Antilles- so either the power spec is a lot lower than what's being reported or the clocks are very much lower than the 6950 card.
Cayman XT = 230-255w x 2 = 460-510w....Fail² (This theoretical card would require three PCI-E 8 pin power sockets).
And no (again), neither AMD nor nvidia will break the PCI-E specification with a reference card. Doing so means that OEM's (Dell, HP, iBuypower, Cyberpower, Puget etc.) won't touch the card with a bargepole.
Riiiight. So a fully functional 6970 is showing similar performance at the moment to the GTX 580, but you think a salvage part with reduced shaders is going to be better still.Imo: Cayman Pro (6950) will match the Geforce 580, The Xt will beat it by a good 20-30% and Nvidia simply won't have an answer for Antilles.![]()
Congratulations, I think yours is the only post I've read on any site or forum that seems so confident about Cypress Pro.
EDIT: Fudzilla is reporting that Antilles will likely be a dual 6950 sourced part.