Hello Fit,Yes,they should drop all to 8x speed,after all the two nf200 should add only other 32 lanes other than the 36 of the x58/5520 so we have 4 x16 full speed and other 4x pci2.0 lanes left . Anyway wait for confirmation,SHamino knows for sure better.
@Shamino or anybody who can answer :  why when i set an uncore multiplier different from default one in the bios,in cpu-z it always shows me the default value instead of the modified one?
My cpu is a x5650 B1 revision

what's the difference between the A1 and the A2 version ?
 
new revision ?
 
What changed?

HI
Thank you very m. for your help.

hey guys im having a problem with detecting my creative x-fi titanium HD card on this board. Im running gtx 480 in sli on the 1st and 3rd pci slot, tried connecting the sound card on 4th, 5th and 6th slot but windows does not detect any sound card connected. Have yet to try the last pci slot. Card is working fine, tried on another pc. Any help?
 
Edit: oh btw using Win7 64 bit OS. Card was working fine on my previous board r3e