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SpaceJello

macrumors 6502
Original poster
Dec 2, 2006
468
142
I have searched the forums but am still a bit confused. Any help would be appreciated.

For the early 2009 macpros with PCI x2 slots (2 at 4 slots and 1 at 16), can I use a PCI-X on a PCI-X2?

I am looking for an esata card but i haven't found any that are in PCI-X2, many are PCI-X...

Thanks
 
You cannot use ANY PCI-X slots in any of the Mac Pro series or the last revision G5 as they use PCI Express (PCIe) and the two are not compatible. If they are actually PCIe cards, then yes, you can use a slower card in a faster slot; the slot will slow itself down to work.
 
I have searched the forums but am still a bit confused. Any help would be appreciated.

For the early 2009 macpros with PCI x2 slots (2 at 4 slots and 1 at 16), can I use a PCI-X on a PCI-X2?

I am looking for an esata card but i haven't found any that are in PCI-X2, many are PCI-X...

Thanks

Don't you mean PCIe x2 rather then PCI-X?
There's no such expansion called "PCI-X2" BTW.


PCIe slots, as found on MacPro's
800px-PCI-Express-Bus.jpg


PCI-X slots, as found on older PowerMacs
64bitpci.jpg



Using the correct 'wordings' and terminology would help soo much. :)
 
Using the correct 'wordings' and terminology would help soo much. :)

Haha as I said, i am confused (including naming it seemed) but thanks for correcting me. me bad. :p

thanks for clearing up all, i now know i can downgrade.
 
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