As NVIDIA has ceased manufacturing GeForce GTX 580 graphics cards, the GTX 680 collection continues to grow, in no small part thanks to the company's OEMs, in this case EVGA. One would think that there are already more than sufficient versions of the GeForce GTX 680 graphics card to go around. Alas, EVGA does not share this view, or at least doesn't think “enough” necessarily means that there is no room for more. What the company did was launch the GeForce GTX 680 SC Signature and Signature+ video controllers. Like all their peers/rivals, they rely on the GK104 Kepler graphics processing unit (GPU). The clock speeds are as follows: 1,084 MHz for the base GPU clock (instead of 1,006 MHz), 1,150 MHz for the GPU boost clock (1,058 MHz stock) and 6,208 MHz for the 2 GB of GDDR5 VRAM (6,008 MHz stock). Indeed, both the Signature and Signature+ share the same speed settings, leaving it to the cooler to set them apart. Then again, that isn't quite true. The cooler is the same, but the Signature+ has a backplate, for extra heat dissipation. Every other asset of the GTX 680 is similar to those on the original release: a memory interface of 256 bits, 1,536 CUDA cores, compatibility with the PCI Express 3.0 interface and four display outputs: two DVI, one HDMI and a DisplayPort connector. Finally, EVGA chose a 5 phase PWM design for the newcomers and equipped them with an 8-pin and a 6-pin PCI Express power connector (the stock board has two 6-pin plugs). Dropping by the EVGA website will net prospective buyers all the information, down to the price tag: the GeForce GTX 680 SC Signature is rated at $529.99 / 403 Euro, while the GeForce GTX 680 SC Signature+, backplate and all, costs $549.99 / 418 Euro. Alas, shipments aren't being carried out yet.