Specifications
Note once again that the dual-GPU cards tested here are the equivalent of a single 512 MB card and not a 1 GB model like the GeForce GTX 280 !
The GeForce GTX 260 and 280 differ mainly by the number of active partitions. While the entire GPU is functional on the GTX 280, only 8 partitions out of 10 are active for the 260. The memory bus has been reduced to 448 bits with 28 ROPs versus 512 bits and 32 ROPs for the new ultra high end. The difference of price between the two cards is noticeable and while the GeForce GTX 280 was launched at a classic 550€, Nvidia announces 310€ for the GeForce GTX 260. Is there a good deal on the horizon?
The cards
For this test we received a reference GeForce GTX 280 and 260 from Nvidia. These cards have an entirely closed design like the GeForce 9800 GX2 although the cooling system is similar to that of the GeForce 9800 GTX’s. A black or white Nvidia logo enables respectively differentiating the GeForce GTX 280 and 260 which have a size similar to other high end cards.
Another small external difference is the power connectors. The GeForce GTX 260 has two 6 pins versus one 6 and one 8 pin for the GeForce GTX 280. So why didn’t they leave the 8 pin connector on the GeForce GTX 260 despite everything in order that it can be used by itself!?
You will notice the presence of a chip dedicated to the control of video outputs, the NVIO2, as it was the case for the GeForce 8800 GTS, GTX and Ultra.
Given that the GeForce GTX 260’s memory bus is smaller at 448 bits, a (32 bit) memory chips disappear from each side of the PCB. Note that these are Hynix 0.8 ns chips on both cards.
