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Maximus IV SLI Help!

post #1 of 5
Thread Starter 
Hey guys!

Okay I'm just wondering I've got an EK Tripple bridge and I know for SLI it's best to use SLot 1 and 3 on the Maximus. However with the bridge I am limited to only doing the following.

Slot 1 and 2

Or Slot 1 and 4

if I run 3 cards I'd be in Slot 1 2 and 4

Currently I'm using 2 cards what do you guys suggest.

Slot 1 and 2? Or SLot 1 and 4? for best performance?

Thanks
post #2 of 5
If I'm not mistaken, slots 1 and 3 share bandwidth, and slots 2 and 4 the same. Slots 1 & 2 will give you x16/x16. Utilizing slots 1&4 should give you the exact same thing. 1&4 should give your cards a little extra breathing room if you have the room at the bottom of your case.

I think with tri SLI, any configuration on the Maximus IV gives you x16/x8/x8.
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post #3 of 5
If you read the instruction booklet, in page 2-15 it says...

In CrossFireX or SLI mode, use the PCIE_X16/8_1 & PCIEX8_3 slots for PCI Express X16 graphic cards to get better performance.

So the answer to your question would be... slots 1 & 3.

One thing I do note that in the chart on same page of the instruction booklet, PCIE 1 & 2 is a native PCIE & only PCIE 2 & 4 is via NF200.
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post #4 of 5
Thread Starter 
I understand that 1 and 3 but. I Can't with the EK Bridge It won't let me use slots 1 and 3. I can only use

Btw these are the RED SLOTS not including Black.

SLot 1 and 4

Slot 1 and 2

FOr Dual Graphics

If I add another gtx which I was planning to in the future hence the Tripple bridge. It would be fine SLot 1 2 and 4 would be occupied. But Since I'm runing dual cards and the Bridge Physically won't let me use SLot 3 what's my best alternative.
Edited by nyxagamemnon - 3/25/11 at 3:52pm
post #5 of 5
I just looked at your motherboard manual. As you already know, slots 1 and 3 are preferred to keep the graphics cards off the NF200 chip. The reason for this is there are reports that running your graphics at x16 through the NF200 is actually slower than running the cards at x8 on native lanes.

Given the SLI connector you have, you are in a quandry because no matter what you do, one of the cards is going to be on the NF200. i don't think it is going to matter which slot you use for the second card. The are both interconnected through the NF200, so all your graphics data from that card will go to the same place before being sent to the CPU regardless of which slot you use.

If it were me, After hooking up the cards today, I'd be looking for a flexible SLI bridge that will reach from slot x16_1 to slot x16_3.

although this review differes on that issue, and from ASUS's recomendations:

This review REVIEW says Slots x16_1 and x16_2 give the best 3D results. Better than using 1 & 3 native. It was in conjunction with a REVO drive, but why should it be any worse whith only graphics.
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