H20 | AMD Phenom II C3 | Dragon's Revenge | Ultimate Thread

[theoldtimer]

Ok, I’ve been trying to find the reason for the low 3DMark06 when testing this MSI 890GXM-G65. I ran some single GFX card (4870x2) tests today. Eight total, four using PCI-e slot #1 and four using PCI-e slot #2. Three test were GFX tests and one full test per each PCI-e slot. Below is an excert from the manual. I read it as PCI-e slot #1 X16 when used alone, X8 when slot #2 is also used. Now PCI-e slot #2 is x8 when used as well as PCI-e slot #1 but what I don’t know is if slot #2 is x16 when used alone.

The whole point of this PCI-e test was to find out if maybe slot #2 was maxed @x8 and if so the when in crossfire with both slots running @x8 if this could be the cause for the low 3d06 score?.

[from the manual]
“Slots
2 PCI Express 2.0 x16 slots
when you install two expansion cards into both PCIE x16 slots, the PCI_E1 &
PCI_E2 lanes will run with x8 speed.
if you intend to install only one expansion card, please install it into PCI_E1 slot,
and the PCI_E1 lane will run with x16 speed
1 PCI Express x1 slot
1 PCI slot, supports 3.3V/ 5V PCI bus Interface”

When one card is installed CCC lists it as x16 when installed in slot #1, X8 when installed in slot #2 but when two cards are installed in crossfire CCC lists slot #1 as x8 and slot #2 x8. I included that CCC info in two of the screen shots below.

I have links for all of the GFX tests if you want to see them let me know. Anyway the average of the three GFX scores on PCI-e slot #1 was 12,497 and the average for the three GFX tests for slot #2 was 12,529. Maybe X8 is enough for a 4870X2?

The CPU was @ 4551MHz one 4870X2 @778/980MHz for All tests, the full 3d06 run was the fourth test in each set. Slot #2 was tested first.

PCI-e slot #2 first GFX test with CCC in SS



PCI-e slot #1 first GFX test with CCC in SS



PCI-e slot #2 full 3DMark06 test
http://service.futuremark.com/compare?3dm06=13601026



PCI-e slot #2 full 3DMark06 test
http://service.futuremark.com/compare?3dm06=13601545



3DMark06 PCI-e test quadfire 2x4870x2’s
http://service.futuremark.com/compare?3dm06=13607415