CrossFire can definitely keep pace with NVIDIA's SLI in most games and surpasses it in others, but it is still physically clumsy compared to SLI.

If you don't play high end games, then the PowerColor X1900XTX isn't for you. For serious gamers it could be a worthwhile purchase, though an expensive one.

While benchmarks will show little differences between this card and the top NVIDIA card, the 7900GTX, the X1900XTX's architecture gives it a little more longevity and should perform well until it's time to switch to a true DirectX 10 capable card. The only downfall is that this is still an expensive card and if you think you'll be doing an upgrade in the mid, rather than the long-term, you may wish to opt for one of the new cards from either manufacturer that sits at a better price point.