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axesupra
03-06-2008, 11:29 AM
hello,
if you have an SLI motherboard, is it normal for a video card perform faster in one of the slots than the other? not by a lot. one of the slots with a single card got me 11500, the other slots 12000 on 3dmark 06.
is this a normal phenomena? is one of pci e ports broken or something?
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-RK
03-15-2008, 08:21 PM
That depends on several things.

My motherboard has the Northbridge heat sink right above one of the slots. It gets pretty hot when I have the CPU overclocked and I've found that the card in that slot won't perform as well as the other in high-strain tests like 3dmark.
Sunny
03-17-2008, 05:03 PM
It's the quad man its too slow. The 8800 GT in SLI have more power to use but the quad is holding them back. Not to mention that the 8800 GT are overclocked like mad. You need to either overclock that CPU or buy one of the better ones. I think if you got it to about 3 ghz you would probably reach like 15,000-16,000.
-RK
03-21-2008, 09:13 PM
Read his post more closely. He's talking about the card running better in one slot than the other. That wouldn't change if it was the CPU bottlenecking it.
Radiator
03-21-2008, 10:57 PM
Is there any difference in real games ?
Sunny
03-22-2008, 07:39 AM
Read his post more closely. He's talking about the card running better in one slot than the other. That wouldn't change if it was the CPU bottlenecking it.

Oh yeah true dat my bad. LOL at me! :p

It could be that the faster slot is meant to be for 1 graphics card by itself. And if you had a second card it would probably go in a slot that does not run at full X16 speed. Some motherboards are not built to handle full X16 speeds on both pci express lanes. Maybe one of the lanes is slower.
-RK
03-23-2008, 08:01 PM
Generally speaking, The limit on that is in the NB not the slot itself.

Most newer sli motherboards use 2x full x16 lanes, but some older only had 1 x16 lane that was split between the two slots when SLI was running.

I'd still say that you should check your motherboard for any hotspots.

Also, that's not much of a difference. 3dmark scores can vary somewhat widely sometimes from one run to the next.