Post
Topic
Board Computer hardware
Re: Server PSU-powered GPU rig packages! Pico's, Risers, adapter cables, etc.
by
Finksy
on 12/04/2017, 21:05:58 UTC
@Finksy – Sent you a PM, please take a look at it when you get a chance.

I’ve posted my question publicly, since I have a feeling it might be a common one.  For the graphics cards that require an 8-pin PCIe connector (most of the non-reference cards or for example the popular Sapphire Nitro+ RX 480), what is the safest and cost effective methodology to attach these to your PSU breakout boards?  Is it safe to only populate 6 of the 8 pins on the graphics card itself or is that a potential fire hazard?  I know they sell an adapter, some cards even come with it, that combines 2 x 6-pin PCIe female connectors to a single 8-pin male connector, but that solution seems overkill to me.

Edit: I may have answered my own question.  In the kits, can you post a picture or describe the 6+2pin PCIe splitters?  Does this take a single 6-pin PCIe female connector in and split to two 6+2 pin PCIe male connectors?  If that’s the case, is it safe to power two RX-480 graphics cards from a single 6-pin PCIe connector.  Not sure what the power consumption is through the 8-pin PCIe port because I know that some of the power comes from the riser itself.

super,

The package includes 6+2pin PCIe splitters.  There are now pictures to show them up top, should help to clarify.  They take a 6-pin PCIe cable in and split to 2x 8-pin PCIe connectors for GPU's.  For the RX series GPU's this is safe, as the wattage drawn through the PCIe connectors on the 470/480 cards is only about 80-90 watts MAX in general.  The PCIe cables are 16awg, and can handle upwards of 250W without problem.  Hope that answers your question!