GTX460 Running PCIe 2.0 at 8*

[REDNINEAPB]

Is anyone running a GTX460 on PCIe 2.0 at 8* rather than 16*, and any idea what the performance impact is, just want to know as considerineg a desktp with a 760i on a ASUS P7P55D E and understand in order to use USB3.0 and Sata 6Gbs properly you have to drop the PCIe slot for the graphics card to 8*.

Any input appreciated.

 

[Rroff]

Aslong as its PCI-e 2.0 @ x8 there will be no performance impact at all. If its PCI-e 1.x @ x8 then you will see 10-15% performance drop off the top end and slightly slower loading times.

 

[Shedman]

What Rroff said

 

[darkwildchild79]

Is anyone running a GTX460 on PCIe 2.0 at 8* rather than 16*, and any idea what the performance impact is, just want to know as considerineg a desktp with a 760i on a ASUS P7P55D E and understand in order to use USB3.0 and Sata 6Gbs properly you have to drop the PCIe slot for the graphics card to 8*.

Any input appreciated.

wow so to have usb 3.0 you have to Sacrifice your pcie 2.0 wow, is that a bios problems or just limitation of the board controller??

that is the first time i heard about that, if you overclocking
you get problems... which is understandable

 

[james.miller]

it's a limitation of the chipset - not enough pci-e lanes i believe.

 

[REDNINEAPB]

Thanks guys, good to know. Will probably go with a ASUS P7P55D-E then as it is PCI-e 2.0*16 dropping to *8.....

 

[Barzini]

Interesting, never knew about this before. Thanks for the info.

 

[Marvin]

Basically, the P55 chipset/CPUs only has/have 16 PCI-E lanes. It is the mainstream socket for a reason I guess!

 

[scotty365]

Thats a goodbit of info there - I never knew that

 

[coupe69]

Basically, the P55 chipset/CPUs only has/have 16 PCI-E lanes. It is the mainstream socket for a reason I guess!

Unless of course it's a high end P55 board with the NF200 chip giving an additional 16 lanes.