A8N SLI Top PCI Express slot toast?

A few months ago I would turn on my computer and no picture would show. I could see the hard drive light flashing and could hear the windows
log in music, so I know the thing was booting. I fiddled with it for a few days, and decided to move my video card down to the second slot and BAM
works great. But now all my game performance blows.

I know I don't have the best sytem in the world, but I was running CoD4 at 1280x1024 w/ 2AA and 2AF
at about 40 FPS. Now, I can't even run it at 1024x768 comfortably. Besides, I'm not one of those guys who will settle for 1024.768 anyway.
I haven't tested any other games yet, but I've uninstalled CoD and reinstalled it with
no improvment so I know its not the game installation that is messed up.

My question is, is the second slot only @ 8X PCI express speed, whereas the first slot was a 16x and thats why my performance sucks now? Or is there
some other issue that I missed? I looked around for reviews of this board and some specifics but couldn't find out if the second slot was only 8x.

System Specs:
AMD X2 3800+ @ stock 2GHz
1GB Corsair DDR400
EVGA 8800GTS 320 MB
300GB Seagate HD
XP w/SP2

Update: I found several articles (reviews) about this mobo at other sites and they all state that the PCI express slots are both 16X. So why should I be suffering
such a lack of quality in game play if the video card still feeds at full bandwidth? The top slot just plain won't display a picture when the video card is installed there.
Only the bottom slot displays. WTH?
3 answers Last reply
More about express slot toast
  1. When your MB is *not* in SLI mode, the first slot is x16 and the second is only x1.
    When your MB is in SLI mode, both slots are x8.
  2. Have you tried both DVI ports, sometimes it doesn't work on one port in some slots, I had that on my asus a8n sli se.
  3. YES: A8N SLI PCI Express slotS toast?

    I had the same problem. The 1st PCI-e crashed. I tried the 2nd, OK. Than that crashed. Now I'm using a PCI video card, very very old and very slow but it works.
    Maybe I could do a bios update? Or reinstall the mobo?

    I'm building a new pc and will reset this pc from scratch.

    On startup I get 5 bios beeps || | | | but can't find ANY info on the net about it, even at ASUS. Nope.
Ask a new question

Read More

Asus Motherboards