ITreviewed posted a review on the nVidia GeForce GTX 285 video card
A quote from the article:
>> nVidia GeForce GTX 285 Review
In our tests the GTX 285 is certainly faster than the GTX 280 it replaces, and even trumps ATI's fastest single-chip offering the Radeon HD 4870 for pure speed - if not on price. But fast as it may be, when compared to a higher performing Radeon HD 4870 X2 that can be had for just 295, it's hard to recommend. Having said that, where multi-GPU scaling is done well, the Radeon HD 4870 X2 easily leaves the GTX 285 far behind. But when a game doesn't utilise multiple GPUs effectively, the gap between the two is very close. If you're dead set on nVidia, you may as well go the whole hog and get a GTX 295 budget and PSU permitting of course! The GTX 285 may be the fastest single-chip card in nVidia's current line-up, but until the California-based company gets more competitive on its pricing, ATI beats it in the performance/value stakes. If you're already running a GTX 280, upgrading to a GTX 285 is pretty much pointless.
>> nVidia GeForce GTX 285 Review