Hey, I'm new to the forums and I need some help.
I've got an older Socket 939 system that I'm trying pump a little more life in, because I'm too poor to get a real system. Anywho, I bought 2 x EVGA 8800GT KO's, because I thought I'd get more overall performance than a single 8800GTX, but I haven't really noticed any performance increase when it's in SLI. So, I ran 3DMark06 and found it was only faster in the Canyon Flight test; the rest of the speeds are about the same. Here's the scores that came up in Single and SLI modes in Windows Vista:
Main Test Results:
3DMark Score 8676 3DMarks in Single, 9209 3DMarks in SLI
SM 2.0 Score 3842 Marks in Single, 3846 Marks in SLI
SM 3.0 Score 4575 Marks in Single, 5334 Marks in SLI
CPU Score 1740 in Single, 1739 Marks in SLI (ZOMG! My CPU is 0.05% faster in Single Mode! LOL!)
Detailed Test Results:
Graphic Tests
1 - Return to Proxycon 31.608 in Single, 31.571 FPS in SLI
2 - Firefly Forest 32.427 in Single, 32.525 FPS in SLI
CPU Tests
CPU1 - Red Valley 0.549 in Single, 0.553 FPS in SLI
CPU2 - Red Valley 0.883 in Single, 0.875 FPS in SLI
HDR Tests
1 - Canyon Flight (SM 3.0) 50.592 in Single, 66.023 FPS in SLI
2 - Deep Freeze (SM 3.0) 40.904 in Single, 40.648 FPS in SLI
My specs are:
CPU: AMD Athlon 64 X2 4800+ Socket 939
Motherboard: Gigabyte K8N-SLI w/ nForce4 SLI MCP chipset
RAM: 4 GB of DDR400 RAM in Dual Channel Mode (1 GB Kingston, 1 GB Corsair, 2 GB Transcend)
Hard Drives: 1 x Samsung 160GB IDE (with XP on it) and 2 x Seagate 500GB SATA2 in striped RAID (with Vista on it)
DVD: LG 16x DVD Burner
Video Cards: 2 x EVGA GeForce 8800GT 512 MB in SLI mode
TV Tuner: Asus MyCinema P7131
Sound Card: Creative Sound Blaster Audigy 2 ZS Gamer
OS: Windows XP Professional 32-bit (on 160GB) and Windows Vista Ultimate 32-bit (on 2 x 500GB)
Power Supply: Enermax EG495P-VE SFMA 485Watt
Also, just to note, I couldn't find the SLI connector that came with my motherboard, so I used one from an Asus motherboard that my brother's not using; would that make a difference? Other than that, any ideas why I don't really have any performance boost in SLI?
EDIT: I should add that the test results are about the same in XP and no matter which video card I use for single mode and no matter which order of cards I use for SLI mode. When in SLI, I do have SLI enabled in the Nvidia Control Panel and I do have SLI enabled on the motherboard itself. I've used Nvidia driver versions 169.02, 169.03, and 169.09 all with the same results and I also got all the Vista hotfixes under:
http://www.nvidia.com/object/windows_vista_hotfixes.html
I think that covers all the obvious stuff. :/ Anything else I missed?
I've got an older Socket 939 system that I'm trying pump a little more life in, because I'm too poor to get a real system. Anywho, I bought 2 x EVGA 8800GT KO's, because I thought I'd get more overall performance than a single 8800GTX, but I haven't really noticed any performance increase when it's in SLI. So, I ran 3DMark06 and found it was only faster in the Canyon Flight test; the rest of the speeds are about the same. Here's the scores that came up in Single and SLI modes in Windows Vista:
Main Test Results:
3DMark Score 8676 3DMarks in Single, 9209 3DMarks in SLI
SM 2.0 Score 3842 Marks in Single, 3846 Marks in SLI
SM 3.0 Score 4575 Marks in Single, 5334 Marks in SLI
CPU Score 1740 in Single, 1739 Marks in SLI (ZOMG! My CPU is 0.05% faster in Single Mode! LOL!)
Detailed Test Results:
Graphic Tests
1 - Return to Proxycon 31.608 in Single, 31.571 FPS in SLI
2 - Firefly Forest 32.427 in Single, 32.525 FPS in SLI
CPU Tests
CPU1 - Red Valley 0.549 in Single, 0.553 FPS in SLI
CPU2 - Red Valley 0.883 in Single, 0.875 FPS in SLI
HDR Tests
1 - Canyon Flight (SM 3.0) 50.592 in Single, 66.023 FPS in SLI
2 - Deep Freeze (SM 3.0) 40.904 in Single, 40.648 FPS in SLI
My specs are:
CPU: AMD Athlon 64 X2 4800+ Socket 939
Motherboard: Gigabyte K8N-SLI w/ nForce4 SLI MCP chipset
RAM: 4 GB of DDR400 RAM in Dual Channel Mode (1 GB Kingston, 1 GB Corsair, 2 GB Transcend)
Hard Drives: 1 x Samsung 160GB IDE (with XP on it) and 2 x Seagate 500GB SATA2 in striped RAID (with Vista on it)
DVD: LG 16x DVD Burner
Video Cards: 2 x EVGA GeForce 8800GT 512 MB in SLI mode
TV Tuner: Asus MyCinema P7131
Sound Card: Creative Sound Blaster Audigy 2 ZS Gamer
OS: Windows XP Professional 32-bit (on 160GB) and Windows Vista Ultimate 32-bit (on 2 x 500GB)
Power Supply: Enermax EG495P-VE SFMA 485Watt
Also, just to note, I couldn't find the SLI connector that came with my motherboard, so I used one from an Asus motherboard that my brother's not using; would that make a difference? Other than that, any ideas why I don't really have any performance boost in SLI?
EDIT: I should add that the test results are about the same in XP and no matter which video card I use for single mode and no matter which order of cards I use for SLI mode. When in SLI, I do have SLI enabled in the Nvidia Control Panel and I do have SLI enabled on the motherboard itself. I've used Nvidia driver versions 169.02, 169.03, and 169.09 all with the same results and I also got all the Vista hotfixes under:
http://www.nvidia.com/object/windows_vista_hotfixes.html
I think that covers all the obvious stuff. :/ Anything else I missed?