Hi, i have this DFI NF4 SLI-DR motherboard and two Leadtek 6800 gt pcie video cards. My system is windows xp pro sp2. My cpu is AMD 64 3200+.
When I use one video card, everything is fine. But when I use both cards, the cpu usage at idle in windows is always high (over 50%) and when I enable SLI mode , it even gets higher (above 80%). Then if I plug one card off, this problem disappears.
And I think it's not the problem of windows or drivers because I just reinstalled windows xp and I tried several drivers
When i use process explorer to check what is using the cpu, there is hardware interrupts which occpupies cpy all the time.
So now i can only use one video card and disable the other one in device manager, otherwise cpu usage whould be very high.
Do you know if this is a problem of the video cars or the motherboards? What should I do? Thanks
When I use one video card, everything is fine. But when I use both cards, the cpu usage at idle in windows is always high (over 50%) and when I enable SLI mode , it even gets higher (above 80%). Then if I plug one card off, this problem disappears.
And I think it's not the problem of windows or drivers because I just reinstalled windows xp and I tried several drivers
When i use process explorer to check what is using the cpu, there is hardware interrupts which occpupies cpy all the time.
So now i can only use one video card and disable the other one in device manager, otherwise cpu usage whould be very high.
Do you know if this is a problem of the video cars or the motherboards? What should I do? Thanks
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