The 285 should outperform the 280, though, thanks to a bump in clock speeds in all three dimensions: the main GPU clock is up to 648MHz, the shaders are up to 1476MHz, and the memory is up to 1242MHz-or 2484 MT/s, since it’s of the GDDR3 variety and since doing the unit conversion for you makes us sound smart. This puppy more or less mirrors the GeForce GTX 280 that it succeeds, with a gig of RAM onboard and an all-around resemblance to its elder sibling, right down to the 10.5″ board length and the plastic cooler shroud. Let’s start our whirlwind tour of the zillion graphics cards in this little roundup with the GeForce GTX 285. What has changed is clock speeds-in the case of the new single-GPU flagship, the GeForce GTX 285-and, thanks to better thermals, the ability to shoehorn two of these GPUs into a single card-that’s the GTX 295. I dunno, man, go read my GeForce GTX 280 review if you want info on the GPU chiclets and stuff. That means it still has 240 gizzywhatchits and 512 hoozydoers or whatever, just like the old version. Other than the die shrink, the GT200b is more or less unchanged from the GT200. That is, Nvidia can turn up the clock speeds without resorting to quad-slot cooling or an external power supply.
The goodness comes mainly in the form of reduced power consumption and heat production, but in turn, those things can lead to increased performance headroom. The move from a 65nm fab process to a 55nm one promises additional goodness from the B-step version of the GT200, affectionately known by some as the GT200b. The primary subjects of our attention today are the GeForce GTX 285 and 295, two cards that are both based on the new 55nm version of Nvidia’s GT200 graphics processor, the 1.4 billion-transistor monster behind the GeForce GTX lineup. So let’s skip the pleasantries and get down to business. I’ve been mainlining caffeine ’til I can barely sit still to type, and each key-press seems to be registering ttthhrreeeeee tttiiimmmeesss.
But now I have just a few hours to write an entire review that’s destined to be packed with more GPU goodness than six regular ones. Yeah, I’ve been playing with the very latest video cards for weeks now, using the newest games and a screaming new test rig.
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