My 9800GX2

[kookooshortman55]

Have you tried 3DMark?

 

[Kewl Munky]

I haven't tried 3D mark. And no my PSU isn't old. Please read more thoroughly.

I know Crysis and UT3 allow for SLI. Not sure about Portal though. I'll look around in my settings more.

 

[kookooshortman55]

I don't get ur cable setup. What is the model of your PSU? Do you not have any 6+2 pins that are part of the PSU?

 

[Kewl Munky]

This is my PSU

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341007

They no longer sell it though. I have two seperate 6 pin rails, and I used an adapter to get a 6+2 pin end for the 8 pin plug on the GX2.

 

[kookooshortman55]

http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=21721

You can try this. Not so much that it is 8 pin vs. 6+2 but because there are 2 connections not 3. Might be your problem.

 

[Kewl Munky]

I'm not buying another adapter unless I figure out I need to.

I moved my GX2 into the second PCI-E slot and saw improvement in UT3 and Portal, but still not crysis. O_O