I ran some PCI-e tests using the Heaven Benchmark a few months ago with my 4870x2’s and was surprised by some of the results (PCI-e x16 compared to x8). I thought I would expand on the test using a better GFX card plus test PCI-e x4.
After running these tests I’m not quite sure what to think. I would really like for someone with a 5970 and a CHIVF to run these tests to compare with my results. Maybe my results are flawed?
Each test was run three times then the average was calculated and used for the result. The PCI-e slots used for the tests were slot 1=X16, slot 2=X8 and Slot 4=X4. PCI-e slot 1 being the slot closest to the processor socket. I added 3DMark06 and Vantage tests in post #10.
System spec.
AMD Thuban 1090T@ 4.2GHz 14x300 (no special reason for these settings)
MB= ASUS Crosshair IV Formula bios 801
MEM= Corsair GT 2000 CL8 4GB
GFX= ASUS 5970@923/1203 MHz (air cooling)
Windows 7 64-bit
Chilled water cooling (CPU only)
I wasn’t trying to get the highest score in the test I was only trying to test and compare the PCI-e x16, x8 and x4 under a reasonable load. I didn’t use GPU-z in the SS’s because my system becomes unstable when I use GPU-z and two CPU-Z’s?
PCI-e x16
PCI-e x8
PCI-e x4
Edited by the oldtimer to replace the incorrect x8 SS with the correct x8 SS
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