CrossFire/SLI leads to increased heat generation, and is far more difficult to maintain. If you can equal the performance with a single card, it should be preferred. Sell your 460 on eBay and get the 580 if you're into spending loads of money. Or just keep a SINGLE 460 and get a nice cheap (but good) Antec TruePower. If he didn't know you couldn't SLI the 560 and the 460, he probably isn't that computer savvy. Xsistor, I appreciate your effort in these threads, but misinformation is frowned upon.
http://www.tomshardware.com/charts/2...ndex,2674.html
Notice how the 580 leads by a MASSIVE margin in comparison to the 460. Let's assume this were a perfect world, and SLI'ing gave double the performance (though this is 100% not true). Even then, 119.29 versus 67.40 x 2 ( 134.8). Due to the increased heat put off by SLI, as well as the fact that it
doesn't overclock well and
doesn't scale well (The hotter card being the one with the most work load, so it can't be overclocked that high anyway.) you're best bet is to go for a 580 if you're into spending money. A single 580 nearly matches the performance of the 460 in SLI configuration, and overclocked, I'm fully certain the 580 will reach higher speeds. After all, it is marketed as the
fastest single GPU. Not that marketing is always 100% accurate.