From the link provided it appears that OCZ RevoDrive 3 X2 is a PCIe 2.0 x4 speed.
The server has expansion slots. Section Standard Features > Expansion Slots > Primary Riser lists that Expansion slot number 3 is of PCIe 2.0 and that the bus speed is x4 and the connector width is x8, which is a half-length, full height slot.
All the slots support up to 150w PCIe cards, but an additional Power Cord Option is required, product number 669777-B21.
Click here to access the server’s QuickSpecs.
Regards,
Vijayasarathy