A few things really popped out at me over some of the leaked info to-date, like the
huge performance gain from 177.34 vs. 177.26 drivers. 43FPS vs 30FPS at Very High at 1920x1200 with just an updated driver is fantastic. Even though GT200 isn't truly a whole new architecture, I'm sure the drivers still need to be tweaked a bit to fully benefit from all the extra transistors, bandwidth and buffer. Given GT200 is performing in-line with expectations bodes well in light of potential future driver improvements.
Also noticed OC'ability seems to sit around 670 to 715MHz. There was an OC comparison at 670MHz as well as Asus' TOP model clocked at 670MHz. Zotac's AMP Edition clocked at 715 in Techpowerup's pulled preview which gives a glimpse at the upper threshold and clock scaling. Should be lots of selection as EVGA plans 5 of each for GTX 280 and 260: a stock, 3 OC'd versions (SC, SSC, FTW) and a water-cooled Black Pearl.
GTX 260 seems to be underperforming so far and I read at least 1 spec sheet that showed it was significantly neutered beyond the 1/8th memory controller/ROP and TMU/SP cluster. GTX 260 was listed at 24 ROP and only 56 TMU which is a pretty big hard cut from GTX 280's listed 32 ROP and 128 TMU....
OEM GTX 280 and 260 specsheet.
So far the leaked benches look really good if you want performance without multi-GPU. Its pretty clear there's some CPU bottlenecking even at the 16x12, 16x10 and even 19x12 resolutions now which is pretty crazy considering most of the reviewers are using 4GHz C2D/Qs. A good example is the
VR-Zone Preview where ET: QW results are nearly identical at 1680x1050 and 1920x1200. The gains in WiC however, are nothing short of amazing compared to previous single-GPU solutions. I only get ~25FPS on High, which is still playable but an average of 60FPS in that game would be amazing.
Still, even in games where the GTX 280 isn't scaling perfectly to 2x 9800GTX or a 9800GX2, its still well beyond playable framerates and shows less performance penalty with AA and AF, all without the negatives of SLi or CF. There's no point in arguing if its worth it or not, the high-end, especially the single-GPU high-end will always carry such a premium. If you wanted value and performance you could've had it with the 8800GT or 8800GTS or 9600GT or any of the other myriad G92 parts that brought G80 performance to the masses at a fraction of the cost. This time around it looks like the RV770 will bring similar value and performance, but its still not going to challenge GTX 280 on the high-end as a single-GPU solution.