Pcie 16x socket stuck in 8x

[Penfookio]

My M4A79 Deluxe is speced at x16 on most sockets, but even in the bios it is showing a max of 8x. My wife comp is the same build with a much cheaper video card, her comp show her sockets are 16x. Only difference is i have an updated bios hers is stock. My first thought is to update the bios but it says it update rom is invaild. Ive tried a couple older bios builds but all invalid. It seems like asus has abandoned this motherboard all together. My other thought is to just replace the board but my amd phenom II x4 940 doesn't have any new boards. any thought to how this issue can be resolved other then building me a new pc?

[flibberdipper]

What slot is your card in (assuming it has multiple x16 slots)?

[pokechat8978]

My M4A79 Deluxe is speced at x16 on most sockets, but even in the bios it is showing a max of 8x. My wife comp is the same build with a much cheaper video card, her comp show her sockets are 16x. Only difference is i have an updated bios hers is stock. My first thought is to update the bios but it says it update rom is invaild. Ive tried a couple older bios builds but all invalid. It seems like asus has abandoned this motherboard all together. My other thought is to just replace the board but my amd phenom II x4 940 doesn't have any new boards. any thought to how this issue can be resolved other then building me a new pc?

I'm pretty sure performance won't be affected whether you're in 8x or 16x.

Although, if you look around in the BIOS, there should be an option about PCIe bus speed or w/e.

[Penfookio]

I'm pretty sure performance won't be affected whether you're in 8x or 16x.

Although, if you look around in the BIOS, there should be an option about PCIe bus speed or w/e.

bios options limit to 8x went that option already. the card is in a 16x slot. Hell it says on the board pcie16x.

[flibberdipper]

bios options limit to 8x went that option already. the card is in a 16x slot. Hell it says on the board pcie16x.

Only the top one will operate at x16. After that I think it's hardwired to x8 and then x4, so make sure your card is in the top slot.

[Penfookio]

Only the top one will operate at x16. After that I think it's hardwired to x8 and then x4, so make sure your card is in the top slot.

its in the top slot i moved it around checking the bios each time it doesn't change. to me it seem like it is a bios issue. but updating doesn't want to work.

[Penfookio]

biggest reason i want to fix this is this card used to run 16x now its at 8x and im noticing a decrease in fps.

[flibberdipper]

its in the top slot i moved it around checking the bios each time it doesn't change. to me it seem like it is a bios issue. but updating doesn't want to work.

That is genuinely weird.

[Penfookio]

That is genuinely weird.

I agree I would just replace the motherboard but my cpu socket is pretty much has been abandoned 

[NumLock21]

According to your board's specs, it has 4 pcie x16 slots (2 blue and 2 black), The blues ones run at x16. When a card is installed into the black slot then the blue slot will run at x8.

Try the bottom blue x16 slot and see if it runs at x16. 

Reset your bios back to defaults and the last bios for your board is 4101

https://www.asus.com/Motherboards/M4A79_Deluxe/HelpDesk_Download/

Try your gpu in your wife's computer and see if it runs at x16.

[Penfookio]

According to your board's specs, it has 4 pcie x16 slots (2 blue and 2 black), The blues ones run at x16. When a card is installed into the black slot then the blue slot will run at x8.

Try the bottom blue x16 slot and see if it runs at x16. 

Reset your bios back to defaults and the last bios for your board is 4101

https://www.asus.com/Motherboards/M4A79_Deluxe/HelpDesk_Download/

Try your gpu in your wife's computer and see if it runs at x16.

ill give that a shot and see if it works also not a bad idea about trying it on the wifes comp but im sure it will run x16

[Deagon]

ill give that a shot and see if it works also not a bad idea about trying it on the wifes comp but im sure it will run x16

its important to check to make sure the card has not become damaged somehow 

[Penfookio]

its important to check to make sure the card has not become damaged somehow 

the card is not the issue the bios shows x8 as max and attempts to update it are not working. it keeps saying the file is invalid