POWERED USB RISERS--
Powered USB risers cost about the same as the cheap and dangerous flat-cable risers picured a few posts back. They power each card with a 4-pin MOLLEX or SATA adapter, not to the PCIe port, but to the goldfingers of the card, just like the motherboard slots.
They are more safe, and the USB cable is more flexible. --scryptr
P.S. SP_ release dot 70 mines Neoscrypt at 340kh/s on my GTX 960, rather than 330-335kh/s with release dot 69. However, a very brief attempt at solo-mining failed. I'll try again later. --scryptr