One of NVIDIA's principal partners, EVGA, released no less than four special edition SKUs for the GeForce GTX 590 graphics card. The SKUs bear EVGA's coveted "Classified" brand extender, which is used on only the most high-end products by the company. First, there's the EVGA GTX 590 Classified Hydro Copper Quad SLI (03G-P3-1599-A2), which is two GeForce GTX 590 graphics cards prepped for water-cooling with HydroCopper water-blocks, packed into one box; next there's the EVGA GeForce GTX 590 Classified Quad SLI (03G-P3-1598-A2), that's two reference design cards in one box; then there are single-card water-cooled (03G-P3-1599-AR) and single-card reference design (03G-P3-1598-AR) packages. The dual-card (QuadSLI) packages include some EVGA memorabilia, a black t-shirt and a large mousepad. All four SKUs pack cards with the same clock speed profile: 630 MHz core, 1260 MHz CUDA cores, and 864 MHz (3456 MHz effective) memory. The HydroCopper cards feature full-coverage water-blocks. As for pricing, the water-cooled QuadSLI pack is priced at $1,729.99; reference-design QuadSLI pack at $1,429.99; water-cooled single-card at $879.99; and reference-design single-card at $729.99.