Ordered 5x 60cm versions today. Figured, what the heck.. I can always lay GPUs on their side outside of my rig if too long.
What PCIe version are these? 1.1, 2.0 or 3.0? Cause bandwidth doubles in each. Most PCIe slots are 2.0 I know, but plugging into an x16 PCIe 3.0 slot should yield... PCie 3.0 bandwidth?
I ask because I also do some CUDA computations, which requires some very high bandwidth. It would double my calculations is it is x1 PCIe 3.0 over x1 PCIe 2.0.
I think you are right, the port would determine the speed. This is just an extender. Mining doesn't need the speed, and I'm not sure of a way to test that. When you find out, please let us all know!
Not here yet, just spent twenty minutes arguing with dhl about why they weren't here Wednesday. Won't be using them again unless I have to.