Gfx card running at 8x

[Swarnendu]

Hello,

 

[bystander]

Hi

 

[jonnyboyC]

drum roll......and the question is?

 

[Swarnendu]

I use a msi radeon 4670 1GB DDR3, presently it is showing 8x pcie link width and max supported is 16x in cpuz and gpuz. I do not understand why the link width is low as previously it used to show pcie link width 16x and max supported 16x in both cpuz and gpuz with same drivers (catalyst 10.6) and bios. My motheroard is asus p5kpl am/ps supporting pcie 1.1 standards. In the catalyst control center it is showing "Graphics bus capability----pcie 2.0" and "Maximum bus setting----pcie 2.0 x8", few days ago it used to show "Graphics bus capability----pcie 2.0" and "Maximum bus setting----pcie 2.0 x16".

Please HELP.

 

[jonnyboyC]

it may be missreading, i know the pcie 1.1 has the additional features of pci-e 2 but the bandwidth of pci-e 1.0 which would be exactly the same as pcie 2.0 at x8 lanes so my guess is that it's fine the software is seeing pci-2 features, but at only half the bandwidth, so it says x8

 

[Swarnendu]

it may be missreading, i know the pcie 1.1 has the additional features of pci-e 2 but the bandwidth of pci-e 1.0 which would be exactly the same as pcie 2.0 at x8 lanes so my guess is that it's fine the software is seeing pci-2 features, but at only half the bandwidth, so it says x8

Yes may be you are right, but the question is why suddenly it is showing 8x link speed, before it used to show16x link speed in the same cpuz and gpuz and same catalyst 10.6 control center.

 

[jonnyboyC]

well did it say which version of pci-e it was i see on my gpu-z it shows the specification number for the physical lane, and also a number for the effective pci-e lanes

 

[Swarnendu]

well did it say which version of pci-e it was i see on my gpu-z it shows the specification number for the physical lane, and also a number for the effective pci-e lanes

It was showing pcie v2.0 right from the beginning. Only prob is few days ago it was showing (in ccc) "Graphics Bus Capability----PCI Express 2.0" and "Maximum Bus Setting----PCI Express 2.0 x16 ". BUT now it is showing "Graphics Bus Capability----PCI Express 2.0" and "Maximum Bus Setting----PCI Express 2.0 x8".

PLEASE HELP ME why so.

 

[jonnyboyC]

i'm stumped honestly, but why would it make a difference anyways, it's not like a x8 pci-e 2.0 or x16 pci-e 1.0 would bottleneck a 4670 anyways,

 

[bystander]

I've had this issue happen to me before, and it always fixed itself when I reseated the card (sometimes it took a couple tries). However, with your card, it's not likely holding anything back at x8.

 

[Swarnendu]

I am not thinking about the 4670, I am thinking about the 5770 I'll buy, MSI 5770 HAWK. Now if that also works at 8x will that not impact performance?
My mobo is asus p5kpl am/ps supporting pcie 1.1 standards, my processor is Intel C2D E7400 and 2x2GB DDR2 800 dual ch. symmetric. I am giving you the info about my system for your convenience.

PLEASE HELP, I am worried. And the most important question is why this x16 to x8 happened suddenly.

 

[Swarnendu]

I've had this issue happen to me before, and it always fixed itself when I reseated the card (sometimes it took a couple tries). However, with your card, it's not likely holding anything back at x8.

How to reset a gfx card?

 

[ares1214]

first off, the difference between 8x and 16x is about 4%...so yeah, ur not gonna notice it, especially with a 5770.

 

[baracubra]

If you haven't noticed substantial drops in frames than nothing has happened. Even now, only the best cards can utilize the x16 lanes. Any previous gen cards (excluding X2) won't be affected by x8 lanes instead of x16 so don't worry

 

[bystander]

How to reset a gfx card?

I meant, reseat. That means you physically remove the video card from the motherboard, and reinstall it.