PCI Express 8x max power

Sep 12, 2015
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Hi,
I have a server motherboard with a physical 8x PCI express slot.
I put a gtx 970 and it s working fine in windows. I haven't tried gaming though.
The gtx has an extra 6pin power that I m providing.
I m wondering if the 8x pci express slot can provide 75 W like a normal 16x pci express or if it s limited to 25W.
The 8x slot is really tiny so I m wondering if the power that can be drawn is smaller than a 16 x slot.
Thanks!
 


It s a physical 8x slot, it s about half the lengh of a usual 16x slot.