Extender Opinion?

[Trongersoll]

7950 gpu.
MB has a X4 connection on a x16 connector.
also have 3 empty PCI connectors.

Do I put an X16 extender in the X4 (X16type) connector? the reason i need the extender is that this connector is the last on the MB and there is no room for dual slot card.

or do i try a PCI to PCIe adapter?

Is it safe to assume that the card will negotiate down to X4 with little effect on the hashing performance?

[Hephaestus]

You can use any good quality riser, actually.  PCIe x1 still has more than enough bandwidth for hashing.
I use these risers for everything, even on x16 slots.
http://www.amazon.com/Micro-SATA-Cables-PCI-E-Cable%C2%A0/dp/B005G4SADY/ref=sr_1_4?s=pc&srs=2529898011&ie=UTF8&qid=1370821348&sr=1-4&keywords=micro+sata+cables

[Trongersoll]

good, i have one of those as well. perhaps i should find a 3rd card.

[BlazinBeaches]

You can use any good quality riser, actually.  PCIe x1 still has more than enough bandwidth for hashing.
I use these risers for everything, even on x16 slots.
http://www.amazon.com/Micro-SATA-Cables-PCI-E-Cable%C2%A0/dp/B005G4SADY/ref=sr_1_4?s=pc&srs=2529898011&ie=UTF8&qid=1370821348&sr=1-4&keywords=micro+sata+cables

Mining works with full hashes on regular x16 slots?

[Trongersoll]

You can use any good quality riser, actually.  PCIe x1 still has more than enough bandwidth for hashing.
I use these risers for everything, even on x16 slots.
http://www.amazon.com/Micro-SATA-Cables-PCI-E-Cable%C2%A0/dp/B005G4SADY/ref=sr_1_4?s=pc&srs=2529898011&ie=UTF8&qid=1370821348&sr=1-4&keywords=micro+sata+cables

Mining works with full hashes on regular x16 slots?

I'm not sure what you are asking.