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.
HTML result view exported from: https://openbenchmarking.org/result/1206062-AR-TWOCARDSO00 .
two_cards_one_used Processor Motherboard Chipset Memory Disk Graphics Audio Network OS Kernel Desktop Display Server Display Driver OpenGL Compiler File-System Screen Resolution Zotac GTX 680 2 x AMD Opteron 6274 @ 2.20GHz (32 Cores) Supermicro H8DG6/H8DGi v1.0 AMD nee ATI RD890 + SB7x0/SB8x0/SB9x0 129024MB 120GB INTEL SSDSC2CW12 NVIDIA GeForce GTX 680/PCIe/SSE2 2048MB (705/3004MHz) NVIDIA GPU 40 HDMI/DP Intel 82576 Gigabit Connection Ubuntu 12.04 3.2.0-24-generic (x86_64) Xfce 4.8 X Server 1.11.3 NVIDIA 295.40 4.2.0 NVIDIA 295.40 GCC 4.6 ext4 1920x1200 OpenBenchmarking.org
two_cards_one_used unigine-heaven: 1920 x 1200 Standard Error Standard Deviation Zotac GTX 680 81.96 0.22 0.47% OpenBenchmarking.org
Unigine Heaven Resolution: 1920 x 1200 OpenBenchmarking.org Frames Per Second, More Is Better Unigine Heaven 3.0 Resolution: 1920 x 1200 Zotac GTX 680 20 40 60 80 100 SE +/- 0.22, N = 3 81.96
Phoronix Test Suite v10.8.4