two_cards_one_used 2 x AMD Opteron 6274 testing with a Supermicro H8DG6/H8DGi v1.0 and NVIDIA GeForce GTX 680/PCIe/SSE2 2048MB on Ubuntu 12.04 via the Phoronix Test Suite. Zotac GTX 680: Processor: 2 x AMD Opteron 6274 @ 2.20GHz (32 Cores), Motherboard: Supermicro H8DG6/H8DGi v1.0, Chipset: AMD nee ATI RD890 + SB7x0/SB8x0/SB9x0, Memory: 129024MB, Disk: 120GB INTEL SSDSC2CW12, Graphics: NVIDIA GeForce GTX 680/PCIe/SSE2 2048MB (705/3004MHz), Audio: NVIDIA GPU 40 HDMI/DP, Network: Intel 82576 Gigabit Connection OS: Ubuntu 12.04, Kernel: 3.2.0-24-generic (x86_64), Desktop: Xfce 4.8, Display Server: X Server 1.11.3, Display Driver: NVIDIA 295.40, OpenGL: 4.2.0 NVIDIA 295.40, Compiler: GCC 4.6, File-System: ext4, Screen Resolution: 1920x1200 Unigine Heaven 3.0 Resolution: 1920 x 1200 Frames Per Second > Higher Is Better Zotac GTX 680 . 81.96 |========================================================