270x runs at 8x instead of 16x PCI-E

[ausemt]

I switched my card from the top pci-e 16x slot to the 2nd slot because it seemed defective.

Read the manual and it should be running at 16x.

I ran GPU-Z and tried the render test but it still is at 8x.

Sapphire Radeon R9 270X Dual-X 2GB
ASRock 990FX Extreme 3
FX-6300 Black Edition
Ballistix Sport 8GB Kit (4GBx2)
Windows 10

Any help would be greatly appreciated

 

[maxwellmelon]

I can tell you its not reading right because your motherboard only has PCI-E 2.0 slots according to specs so if its not reading that part right its prob not reading the number of lanes right. I might be wrong but I think the 990 chipset is not capable of running in PCI-E 3.0 mode.

your motherboard manual also recommends for a single card --- "it is recommended to install a PCI Express x16 graphics card on PCIE2 slot."
http://asrock.pc.cdn.bitgravity.com/Manual/990FX%20Extreme3.pdf

 

[ausemt]

I can tell you its not reading right because your motherboard only has PCI-E 2.0 slots according to specs so if its not reading that part right its prob not reading the number of lanes right. I might be wrong but I think the 990 chipset is not capable of running in PCI-E 3.0 mode.

your motherboard manual also recommends for a single card --- "it is recommended to install a PCI Express x16 graphics card on PCIE2 slot."
http://asrock.pc.cdn.bitgravity.com/Manual/990FX%20Extreme3.pdf

It does have 3 PCI-E 2.0 slots, and i believe if it's in the second PC-I 3 16x slot it should be running at 2.0 x16.

 

[maxalge]

I can tell you its not reading right because your motherboard only has PCI-E 2.0 slots according to specs so if its not reading that part right its prob not reading the number of lanes right. I might be wrong but I think the 990 chipset is not capable of running in PCI-E 3.0 mode.

your motherboard manual also recommends for a single card --- "it is recommended to install a PCI Express x16 graphics card on PCIE2 slot."
http://asrock.pc.cdn.bitgravity.com/Manual/990FX%20Extreme3.pdf

It does have 3 PCI-E 2.0 slots, and i believe if it's in the second PC-I 3 16x slot it should be running at 2.0 x16.

the top two pcie slots probably share bandwith


if you have something in the top slot both run at 2.0 8x, or if you have nothing in the top slot then the second is just limited to 8x



you need to put the card in the top most pcie slot

 

[ausemt]

I can tell you its not reading right because your motherboard only has PCI-E 2.0 slots according to specs so if its not reading that part right its prob not reading the number of lanes right. I might be wrong but I think the 990 chipset is not capable of running in PCI-E 3.0 mode.

your motherboard manual also recommends for a single card --- "it is recommended to install a PCI Express x16 graphics card on PCIE2 slot."
http://asrock.pc.cdn.bitgravity.com/Manual/990FX%20Extreme3.pdf

It does have 3 PCI-E 2.0 slots, and i believe if it's in the second PC-I 3 16x slot it should be running at 2.0 x16.

the top two pcie slots probably share bandwith


if you have something in the top slot both run at 2.0 8x, or if you have nothing in the top slot then the second is just limited to 8x



you need to put the card in the top most pcie slot

Guess i'm stuck using x8 because if i use the top one it causes drivers to crash.

Thanks anyways

 

[maxalge]

I can tell you its not reading right because your motherboard only has PCI-E 2.0 slots according to specs so if its not reading that part right its prob not reading the number of lanes right. I might be wrong but I think the 990 chipset is not capable of running in PCI-E 3.0 mode.

your motherboard manual also recommends for a single card --- "it is recommended to install a PCI Express x16 graphics card on PCIE2 slot."
http://asrock.pc.cdn.bitgravity.com/Manual/990FX%20Extreme3.pdf

It does have 3 PCI-E 2.0 slots, and i believe if it's in the second PC-I 3 16x slot it should be running at 2.0 x16.

the top two pcie slots probably share bandwith


if you have something in the top slot both run at 2.0 8x, or if you have nothing in the top slot then the second is just limited to 8x



you need to put the card in the top most pcie slot

Guess i'm stuck using x8 because if i use the top one it causes drivers to crash.

Thanks anyways

its ok, you loose at most 1 - 2 % on that card on a 8x slot

 

[maxwellmelon]

I still say the program is just reading it incorrectly is what I was trying to point out as it was saying its a PCIE version 3.0 when it is clear that its only PCIE version 3.

PCIE 2 and PCI 3 are x16 with 16 lanes each and PCIE4 is a 16 size slot with only 4 lanes. according to the motherboard manual I linked.

 

[ausemt]

I still say the program is just reading it incorrectly is what I was trying to point out as it was saying its a PCIE version 3.0 when it is clear that its only PCIE version 3.

PCIE 2 and PCI 3 are x16 with 16 lanes each and PCIE4 is a 16 size slot with only 4 lanes. according to the motherboard manual I linked.

The first part before the @ is the pcie that the card supports and after the @ is what its running