Can my motherboard handle that card at full speed without any proplem ?

[Yusuf Il]

My motherboard gigabyte b75 m d3h. Video cards sapphire 270x vapor x 2gb or the the 280x can my motherboard handle these cards without to stutter bottleneck

 

[Scott_D_Bowen]

Usually the CPU will hold a video cards rendering performance back more than the motherboards.
For any SINGLE card PCI Express x16 v2.0 is enough, and newer systems support PCIe x16 v3.0 (or later) which double the bandwidth the card has available.

You can see the 3D performance of the B75 chipset here, having PCIe 2.0 is enough
http://www.techpowerup.com/reviews/Gigabyte/B75M-D3H/10.html