GPUs in real servers... like Dell PowerEdge, IBM, etc

[epdp14]

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.

The slots look like this:

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

PS this is a repost from the tech support forum but I guess it fits here better.

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[airdata]

Only one I've heard somebody talking about was an sc420 which is an older tower.  I think they have a full sized pcie and then a 4x that you can cut the back off to fit a 2nd card.

Also, the T300's I believe ONLY have pcie... Whether or not you could get high end cards working in it is another thing.

[hugolp]

I guess you could use extenders and put any kind of card. For mining, you can use pci-e 1x to 16x extenders without any decrease in bitcoin mining speed.

[cicada]

Nah probably not, you better just send them all to me. 

[deslok]

Yes mining will work fine you may need a flexible riser cable to fit the cards properly or to cut the end of the slot so the card can pass through.