Hello community,
I never really post on forums, but I'm unable to find someone with this exact problem who found the solution...
I've noticed a problem with my PCIE slots. My motherboard has 2 PCIE x16 slots. Up to now I've been using only one video card, so I never noticed anything peculiar. However I purchased a second video card, and now I cannot Crossfire them because when both cards are plugged in, it goes to a x8/x1 configuration, instead of x8/x8 as advertised. Similarly, if only one card is in slot 1, it functions at x8 (instead of x16), and if only 1 card is in slot 2, it functions at x1 as well (instead of x8). This is true not only at idle, but under stress as well.
Basically, my card's specs show :
PCIE x16_1 Single card = x16
PCIE x16_1 Dual Card = x8
PCIE x16_2 Dual Card = x8
And this is what I'm actually getting :
PCIE x16_1 Single card = x8
PCIE x16_1 Dual Card = x8
PCIE x16_2 Dual Card = x1
These are the measures I've tried :
- Tried each card in different slots, together and one at a time
- Taken out and reseated them multiple times
- Took off my CPU waterblock to make sure the backplate wasn't touching anything, and the CPU itself and the socket look fine
- Tried deactivating anything that looked like it had to do with power savings in Windows and BIOS
- Tried with and without Crossfire link
- Flashed BIOS, now at latest version
- Installed latest chipset and firmware drivers
- Completely erased and reinstalled ATI Catalyst software and drivers
Here are my specs :
Asus P8Z77-V LK motherboard
i5-3570k CPU (not overclocked)
Sapphire HD 7870 Ghz Edition graphics card
Gigabyte HD 7870 Ghz Edition graphics card
Corsair TX650 psu
1x 8gb Corsair Vengeance DDR3 ram
I'm reaching out to you guys 'cause I'm in a real pickle! Please let me know if you require any additional information.
THANK YOU
I never really post on forums, but I'm unable to find someone with this exact problem who found the solution...
I've noticed a problem with my PCIE slots. My motherboard has 2 PCIE x16 slots. Up to now I've been using only one video card, so I never noticed anything peculiar. However I purchased a second video card, and now I cannot Crossfire them because when both cards are plugged in, it goes to a x8/x1 configuration, instead of x8/x8 as advertised. Similarly, if only one card is in slot 1, it functions at x8 (instead of x16), and if only 1 card is in slot 2, it functions at x1 as well (instead of x8). This is true not only at idle, but under stress as well.
Basically, my card's specs show :
PCIE x16_1 Single card = x16
PCIE x16_1 Dual Card = x8
PCIE x16_2 Dual Card = x8
And this is what I'm actually getting :
PCIE x16_1 Single card = x8
PCIE x16_1 Dual Card = x8
PCIE x16_2 Dual Card = x1
These are the measures I've tried :
- Tried each card in different slots, together and one at a time
- Taken out and reseated them multiple times
- Took off my CPU waterblock to make sure the backplate wasn't touching anything, and the CPU itself and the socket look fine
- Tried deactivating anything that looked like it had to do with power savings in Windows and BIOS
- Tried with and without Crossfire link
- Flashed BIOS, now at latest version
- Installed latest chipset and firmware drivers
- Completely erased and reinstalled ATI Catalyst software and drivers
Here are my specs :
Asus P8Z77-V LK motherboard
i5-3570k CPU (not overclocked)
Sapphire HD 7870 Ghz Edition graphics card
Gigabyte HD 7870 Ghz Edition graphics card
Corsair TX650 psu
1x 8gb Corsair Vengeance DDR3 ram
I'm reaching out to you guys 'cause I'm in a real pickle! Please let me know if you require any additional information.
THANK YOU
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