GHIC and/or HIC Choosing GHIC, HIC or combination for CUDA System


My user pan to use CUDA with following existing server (has two PCIe X16) and S2050. The OS is Windows Server 2008 R2.

Which one is better for choosing HIC/GHIC, 2 GHIC, 2 HIC or 1 GHIC + 1 HIC?

Best regards,