Hello,
I have an Asus P6T Deluxe V2 which has 3 PCI express lanes.
I've always had my 5970 in the lane 1 overclocked on air to 1.2v 900/1150. It has been stable - no problems.
As I always do when a new card comes out (7970) I start getting ready! I've cleaned my machine from all the dust etc, and I thought I would also test the other lanes.
Apparently I can have 16x16x1x or 16x8x8x configuration with my MOBO. I've left it as the former (I believe - need to double check)
What I decided to do was move the 5970 to lane 2, and make sure this slot was fine, as it has never been used - and im intending on buying 2 7970! Don't tell the pregnant wife though!!
Card works in lane 2, but doesnt seem to handle the orginal overvolt and overclock settings. Furmark freezes, and on reboot 3D just doesnt work. Even starting CCC or Furmark freezes the machine. The only option is to uninstall CCC and reinstall (12.1 btw)
So, Is this typical (or been seen before) that a pci-e lane may not support a device overclock as well?
I've been in to GPU-Z and it says PCI-E 2.0 x 16 @ 16 1.0 - so it is running at the correct bandwidth.
I have an Asus P6T Deluxe V2 which has 3 PCI express lanes.
I've always had my 5970 in the lane 1 overclocked on air to 1.2v 900/1150. It has been stable - no problems.
As I always do when a new card comes out (7970) I start getting ready! I've cleaned my machine from all the dust etc, and I thought I would also test the other lanes.
Apparently I can have 16x16x1x or 16x8x8x configuration with my MOBO. I've left it as the former (I believe - need to double check)
What I decided to do was move the 5970 to lane 2, and make sure this slot was fine, as it has never been used - and im intending on buying 2 7970! Don't tell the pregnant wife though!!
Card works in lane 2, but doesnt seem to handle the orginal overvolt and overclock settings. Furmark freezes, and on reboot 3D just doesnt work. Even starting CCC or Furmark freezes the machine. The only option is to uninstall CCC and reinstall (12.1 btw)
So, Is this typical (or been seen before) that a pci-e lane may not support a device overclock as well?
I've been in to GPU-Z and it says PCI-E 2.0 x 16 @ 16 1.0 - so it is running at the correct bandwidth.
