So I finally decided to build a new computer, instead of continuing to fiddle with 10 y/o hardware all night long to get video from an awesome 64 meg card. I'm not sure if I should go with a Crossfire, or SLI mobo? Is there an advantage to one or the other?

SLI is known because it's been out awhile. The card support is better and it's very easy to get a motherboard and powersupply that can handle it.

However, it's not exactly all that great.

SLI is known to give at least a 60-70% performance increase in FPS... but that's only a handful of games.

Plus, MANY current ATi cards are owning the SLI cards ALONE. Just look at the chart:

Graphics Cards Chart - Overall

If one card can top out 2, then it shows that ATi in itself, not even the Crossfire editions, are much better. Now, granted, this is just one test. But browse the site a bit. You'll find a handful of games that SLI came out WAY on top... but how many of those games will you actually play?

I don't think having 2 cards that are only supported on a handful (and some aren't even mainstream) games for an extra 20 frames per second.

Am I reccomending Crossfire? No, not really. I'm just saying that SLI or Crossfire isn't even all that great to begin with. NVidia has horrible support with SLI on most games, and Crossfire is still quite expensive (the Video cards themselves are normal prices, but the motherboards are what gets ya).

I'm running an ATi X1900 XTX, and I can easily say that, for the price, it far eliminates any need for SLI. My bottleneck now is actually my CPU.

Honestly, I'd say instead of going for anything SLI, grab a high-end ATi card and put a little extra money in something else... say... the CPU. The power output you can get from a high end Intel or AMD will outweigh the small boost you get from 2 video cards.

alright, good advice. I did some research, and found that crossfire seems logically at least, seems like it would render everything a bit better, plus only a small hand full of games are actually supported by SLI.

hmm, i would have figured with 2 cards, you'd get more than a 20 FPS boost. Maybe in the future it can increase a bit, ah well, i've already got the crossfire motherboard, i'd like to B.S. around with crossfire for a bit, it would be fun to say, hey, i've got 2 video cards pumpin video into this ONE monitor.....lol