Gigabyte GA-MA78G-DS3HP stuck in 4x pci express

[buckshot24]

Recently got a 5850 and noticed that I wasn't getting the speed that I should so I started asking around and it was mentioned (by Azn) that the pci express slot might be lower than x16. In fact it was running at x4

I have the latest beta bios for the board the F5e.

Any ideas?

 

[lopri]

Couple of things you could try (in no particular order):

1. CMOS clear
2. BIOS flash
3. Try fiddling with any PCIe configuration option in the BIOS
4. Try disabling and enabling realtek NIC in the BIOS
5. Try disabling/enabling onboard GPU.


I've seen this issue before on Gigabyte/Biostar boards, and my impression is the internal PCIe switch is not configured correctly. Since most 780G boards network PHY's are rooted to the northbridge, that could also be a possible culprit. There was a post regarding how to fix this on a Biostar board in a distant past, but unfortunately I didn't take a note of it. You might want to contact Gigabyte if these attempts fail.

 

[tcsenter]

This is by spec:

1 x PCI Express x16 slot, running at x16 (PCIEX16_1)
1 x PCI Express x16 slot, running at x4 (PCIEX4_1)

Move it to the primary PCI-E x16 slot.

 

[buckshot24]

This is by spec:

1 x PCI Express x16 slot, running at x16 (PCIEX16_1)
1 x PCI Express x16 slot, running at x4 (PCIEX4_1)

Move it to the primary PCI-E x16 slot.

Thanks but I have it set up in the proper slot. Three separate cards all at 4x, recently installed vista 32bit, same thing. I blew compressed air into the slot to see if it would help, nope.

Couple of things you could try (in no particular order):

1. CMOS clear
2. BIOS flash
3. Try fiddling with any PCIe configuration option in the BIOS
4. Try disabling and enabling realtek NIC in the BIOS
5. Try disabling/enabling onboard GPU.


I've seen this issue before on Gigabyte/Biostar boards, and my impression is the internal PCIe switch is not configured correctly. Since most 780G boards network PHY's are rooted to the northbridge, that could also be a possible culprit. There was a post regarding how to fix this on a Biostar board in a distant past, but unfortunately I didn't take a note of it. You might want to contact Gigabyte if these attempts fail.

I have done a few of these things, namely 2, 3, 5. I will try the other two things a little later.

Appreciate all the suggestions by the way.