As usual, we'd advise giving the professional reviews a thorough read to verify the GPU maker's claims.
Having all those video outlets can be harnessed to do some triple-screen gaming, with Nvidia providing its own benchmarks showing playable frame rates are achievable in 5760 x 1080 resolution on some of the latest games: 41fps for Just Cause 2, 40fps for Deus Ex: Human Revolution, 37fps in Battlefield 3, and 49fps in Skyrim. PCI Express 3.0 is supported, just as with the GTX 680. Two dual-link DVI outputs are available around the back, next to a DisplayPort 1.2 jack and an HDMI port. EVGA, Asus, Galaxy, Zotac, and other partners are already preparing cards with clock speeds of 1GHz and beyond, so out-of-the-box performance will likely vary slightly depending on your manufacturer of choice. While touting the performance-per-watt ratio of its new card, Nvidia also makes a point to highlight that it habitually over-engineers its GPUs to handle higher clock speeds and power utilization than their rating - it'll be up to either you or add-in board partners to squeeze the most out of these chips. Nvidia rates the GTX 670's TDP at 170W, however if you run it in a completely stock config, the company says to expect something closer to 141W under load. It retains the same generous 2GB video buffer, made up of 256-bit GDDR5 RAM, and in a standard configuration will ship with two 6-pin auxiliary power connectors. The new card is based on the same DNA, in Nvidia's words, as the GTX 680, but nixes 192 CUDA cores and about a tenth off the base and boost operating speeds to arrive at 1,344 cores and 915MHz / 980MHz clocks. Been lusting after a GeForce GTX 680 at a more affordable price point? Nvidia has done the inevitable and trickled its Kepler GPU architecture down to a more wallet-friendly level with the introduction of the $399 GeForce GTX 670.