Need experts opinion...new gaming rig

[DominionSeraph]

One last question....

This HP says the MB supports PCI 16 express....is this the same as PCI 2.1 16 express?

Wanting to get a HD 6870 and now I'm not sure this PC is PCI 2.1 or not.

You're fine. They're interchangable.

 

[mfenn]

One last question....

This HP says the MB supports PCI 16 express....is this the same as PCI 2.1 16 express?

Wanting to get a HD 6870 and now I'm not sure this PC is PCI 2.1 or not.

The chipset in that machine is a Cougar Point variant (probably H61 or H67) which supports the PCIe 2.0 lanes available on the CPU. As DominionSeraph indicated, they are indeed interchangeable.

The x16 part is the width of the slot. PCIe is an inherently serial interface, so you get higher bandwidth by aggregating multiple links together. x16 is the most common width for GPUs.