<p><span style="font-size: small;"> It&rsquo;s been </span><span style="font-size: small;">quite a while</span><span style="font-size: small;"> since we&rsquo;ve looked at triple-GPU Crossfire and SLI performance &ndash; or for that matter looking at GPU scaling in-depth. While NVIDIA in particular likes to promote multi-GPU configurations as a price-practical upgrade path, such configurations are still almost always the domain of the high-end gamer. At $700 we have the recently launched GeForce GTX 590 and Radeon HD 6990, dual-GPU cards whose existence is hedged on how well games will scale across multiple GPUs. Beyond that we move into the truly exotic: triple-GPU configurations using 3 single-GPU cards, and quad-GPU configurations using a pair of the aforementioned dual-GPU cards. If you have the money, NVIDIA and AMD will gladly sell you upwards of $1500 in video cards to maximize your gaming performance.</span></p> <p><span style="font-size: small;"> These days multi-GPU scaling is a given &ndash; at least to some extent. Below the price of a single high-end card our recommendation is always going to be to get a bigger card before you get more cards, as multi-GPU scaling is rarely perfect and with equally cutting-edge games there&rsquo;s often a lag between a game&rsquo;s release and when a driver profile is released to enable multi-GPU scaling. Once we&rsquo;re looking at the Radeon HD 6900 series or GF110-based GeForce GTX 500 series though, going faster is no longer an option, and thus we have to look at going wider.</span></p> <p><span style="font-size: small;"> Today we&rsquo;re going to be looking at the state of GPU scaling for dual-GPU and triple-GPU configurations. While we accept that multi-GPU scaling will rarely (if ever) hit 100%, just how much performance are you getting out of that 2^nd or 3^rd GPU versus how much money you&rsquo;ve put into it? That&rsquo;s the question we&rsquo;re going to try to answer today.</span></p> <p><span style="font-size: small;"><a target="_blank" href="http://www.anandtech.com/show/4254/triplegpu-performance-multigpu-scaling-part1">Read more...</a><br /> </span></p>