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Asus Evo M4A79XTD PCIe troubles.

post #1 of 4
Thread Starter 
So I just picked up this board for my new build. I'm paring it with a Phenom ii x4 925, Kingston HyperX Blu (4 gigs), and Antec 620w psu, and a beautiful Sapphire 6950...

My biggest problem is this...

GPU-z says I'm running my card at x8 when its capable of x16.

I have it in the correct blue slot that states in the manual will run at x16. Am I losing performance since it's in x8 mode?

I ran a heaven 2.1 benchmark and was only capable of getting a 1500 score. Is that right? To me everything seemed to run just fine, but I guess I'm expecting more???

That's with no oc on the processor or anything.

When I oc'd my processor to 3.2(I think around there lol) it bumped up my score to 1550.

What are your guys' thoughts on the pcie deal? I've searched and searched for something that could be wrong in the bios but I can't find anything that says its running a x8 or even x16 speed.

Thanks
-Very confused Nerotoxen-
White Devil
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White Devil
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post #2 of 4
Thread Starter 
Ok so I think it's my video card. I swapped the 6950 with my old x1800. Here's what gpu-z says about the x1800.

Thoughts? I'm thinking RMA?

I also tried the 6950 on the old computer but couldn't get it to even show anything. (Possibilites are that my psu couldn't handle it) So I'm sending it to my lil brother who's got the computer to handle the power consumption and everything.

I even tried to move the 6950 into the lower slot on this asus board and it just made it a x1 not even x8. I noticed that when I have my monitor plugged into the top dvi port it won't let the mobo post. When I have the dvi on the bottom it will post. So this is probably a bad video card? I'm still waiting to do some tests on the x1800 in the same pcie slot to see if it could be a bad slot. UGH this makes me mad lol!
White Devil
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White Devil
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post #3 of 4
One of the pins on the latter half of the PCI-E connector on 6950 may be dead sadly, forcing it to x8
If you play a very high resolution or use godly amounts of AA only then should it make a difference
post #4 of 4
Thread Starter 
Well now hear me out on this little pickle... So I took the 1800 and put it in the new computer installed drivers then went to reset computer. Upon trying to boot back up nothing came up and the fan speed of the 1800 was 100% (it normally does this on start up for a second or so then goes to normal). So I removed it then put the 1800 back in the old computer - same thing 100% fan speed - *panic sets in* Take the 1800 out of old pc leave on table for about 10 min. Put BACK into the old pc and it boots up just fine. I'm so lost here. I tried the 6950 in the new computer again... everything boots up. Get into windows then install 11.11 drivers and reboot. BAM nothing works again. What in the world is up with this computer?!
White Devil
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White Devil
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Crucial M550 Kraken X61 Win10 Acer 24'' 
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Dell Corsair HX850i Corsair 760T Logitec 
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