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Crossfire on an Asus P5K?

post #1 of 7
Thread Starter 
I'm just wondering,

The P5K has two PCI-E Slots, one black and one blue. The one runs at x16 bandwith, and the other at x4.

I'm assuming that this wouldn't be "true" crossfire in the sense that it's not x16 bandwith for both cards?

The reason I'm asking is because I want to do a crossfire setup, but I'm not sure why I should on the P5K since one is x16 and one is x4.

If I did do crossfire, I'd want to do 3870's in Crossfire...

Help?!?

I'm confused
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Just a comp.
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post #2 of 7
my plan is to do tri crossfire and my third pci-e slot is 4x but thats not gonna stop me! i say go for it
    
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nope! 
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post #3 of 7
You can do crossfire, but you'll see a SLIGHT performance hit by the x4 slot.

Kinda pisses me off that I didn't see that it was x4 in the first place, but the performance lost isn't that bad.

~Gooda~
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post #4 of 7
Thread Starter 
Isn't it just stupid considering you're not really utilizing the second card?
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Just a comp.
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post #5 of 7
16x and 4x refer to the amount of bandwidth so it would depend on the card to how much of a hit it would take right.
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post #6 of 7
Thread Starter 
Yeah, I'd think that It would just be better off for me to just get a 3870 X2 or a better board... ie. the P5E
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Just a comp.
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Q6600 GO @ 3.6 Ghz 1.48 v bios Asus P5K eVGA 9800GTX 770/1944/2300 4 GB Patriot Extreme PC2-6400 
Hard DriveOptical DriveOSMonitor
150 GB WD Raptor 500 GB Barracuda 160 GB IDE HD LITE-ON DVD-RW Dual boot Vista / XP 32 Bit Samsung 226BW 22" WS 
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post #7 of 7
Crossfire on that board will show some improvement, but the second slot's lack of bandwidth will not help your CF arrangement reach its full potential.
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