Is PCIe 3.0 backward compatible

[FATAL2TY]

Hello,
I have a motherboard with PCIe 2.0 graphics slots only. Will a PCIe 3.0 graphics card work if I plug it into one of the PCIe 2.0 slots?

 

[ASHISH65]

yes its backward compatible.card will 100%work in 2.0 mbo

 

[unreal9400]

Yes it will work 100%

 

[bucktoof]

Will the performance be downgraded?

 

[unreal9400]

Depends on which graphic card.

 

[Sumukh_Bhagat]

The performance may drop by a little. Not much.

 

[Commandermadi]

3.0 cards in 2.0+ slot will work at 2.0+. 2.0 cards in older 1.0+ would work at 1.0+ . Simply, all of them are backward compatible. You could run it on PCI-e 1.0 x8; it would be bottlenecked but it would work. But at your case, I guess any single 3.0 graphics card could work normally on a Mobo with with PCIe 2.0 smoothly.