Originally Posted by StrictNine
could they make a gtx260 gx2 ?
Not it in its current state, no. It's way too big to fit on one PCB. Sure they could try to do dual PCBs again, but then there's still problems with power requirements, thermal output, and perhaps most importantly: cost. The market for a $650 card is small already, and I can guarantee you that the market for a $1000+ card is even smaller than that. They wouldn't waste the time and money developing it if there weren't going to be enough people to buy it in order to get back the development costs. The only thing they could perhaps do is make a GX2 model of one of the GT200 derivatives. However at this point it will probably lack the power needed to go up against 4870X2.
Nvidia really played right into AMD's hands. If you look at the progression of the rumors around RV770, it started off as being a relatively small upgrade to the HD3k series. Then all of a sudden, the SP count went up from 480 to 800 and in a very short period of time it went from looking like RV770 was just a midrange part and there would be no answer to GTX200 to the HD4870 effectively rendering the GTX260 useless and questioning the price/performance of the GTX280.
It would be naive to not consider that AMD could have intentionally spread false rumors initially to make Nvidia feel relatively "safe" with some small architectural improvements and additional hardware. Even now they are intentionally downplaying their cards by positioning the HD4870 as the 9800GTX's competitor rather than the HD4850 (see the official slides, they all say 4870 is the 9800GTX's competitor). We all know that the 9800GTX is hardly any competition at all for the HD4870, and the same goes for the HD4850 and the 8-series (*haven't seen any results vs 8800Ultra). Even the 9800GTX+ is hardly a big threat to the HD4850's position because factory overclocked versions are due around the same time as the GTX+ is set to debut.
The intentional mis-positioning is having the precise effect that AMD wanted: They have put Nvidia into a situation where because of underestimating RV770, not only are they getting nailed on price, they're barely leading on performance, but they're also left with nothing obvious to counter with. Sure there's GT200b, but I have serious doubts that it will reduce production costs enough to price their cards right. And even if I'm wrong, I think that AMD has plenty of room to lower the 4870's price.
If they had something to react to the 4870X2, they would have said something already. Because in the meantime, ATI is getting a ton of attention and praise in the direction of it's new chips while at the same time the GTX280 is seen as a colossal waste of money. More importantly, it's looking as if ATI is about to see a pretty significant increase in marketshare and this is something Nvidia cannot let happen if they want CUDA to take off. Sure announcing something now what definitely cut into GTX280's sales, but honestly how much do they expect to sell anyway?Edited by darkcloud89 - 6/28/08 at 1:20pm