Server PCIeX4 and PCIeX8

[epdp14]

I am quite unfamiliar with server hardware so please cut me some slack.

I am a network administrator and hosted services provider (webhost, voip, etc) to small businesses and I have a couple of servers that have pcie slots labeled PCIeX8 and PCIeX4. Are these just normal run of the mill pcie slots that are x4 or x8 instead of the standard x16? Are there any video cards that would get a decent hashrate and work in these cards?

Thanks for your help.

[epdp14]

The slots look like this on a few of the servers, otherwise they are the same size but are just hardwired into the servers instead of on a riser.

http://stuartconnections.com/products/Computers/Components/Boards/PowerEdge_2950_PWA_Riser_H6183/DSC09698w.jpg

[Chris Acheson]

They should work.  PCIe supports down-plugging, but the slot has to be physically modified to fit the x16 card.  Rather than taking a dremel to your motherboard, you can get pre-modified extender cables from Cablesaurus.  The x1 cables will be enough for mining and will fit in any slot, so no need to get x4 or x8 cables.