Re: CCminer(SP-MOD) Modded NVIDIA Maxwell kernels.

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

curious......on the usb side, what would be the results of me adding one of those hubs and tring to run 8 GPUs off pcie ?

PCIe DAUGHTER HUB/SPLITTER--

I've been asked this before, if we are talking about the same thing. I purchased a 1 PCIe-to-4 PCIe board, it worked for GTX 500 series and below. I could not get it to work with GTX 700 series nor any AMD cards. There is a picture of one of the boards several pages back. However, a simple USB hub would not work, the circutry could not handle the information from multiple cards on one line. --scryptr

Does a USB riser actually use USB protocol or is it a straight replacement for the ribbon cable?

USB RISER--

A USB riser has circuitry on the board that mounts the extended PCIe slot in which the card fits, this circuitry converts the signal. --scryptr

EDIT: As a comparison, look at this product by ASRock, a PCIe PRO riser, that uses dual SATA cables and a power cable that draws from the PCIe 1x connection. It is claimed to be faster because there is no conversion circuitry. There is apparently a separate line for each gold finger in a PCIe 1x connection. A link below:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813998015

--scryptr