Hi All.. I've built a rig with an AsRock H81 BTC motherboard, 5 x RX480s on powered risers with an EVGA 1000W (GQ) powering the lot. It all runs fine so far.
Each RX480 is powered back to the PSU with a 8 pin to PCI-E express cable (that plugs into the top of the graphics card) and connected with one of these risers: https://www.amazon.co.uk/gp/product/B01ER2Z1GY/
I have the molex to sata power connector that comes with the riser plugged into the molex on the riser and then the SATA power connector attached back to the 6 pin SATA on the PSU. I'm powering two RX480s with one "cable" back to the PSU. - equivalent to the cables that come with the PSU that are like this: https://www.amazon.co.uk/Startech-Power-6-Pin-Express-Adapter/dp/B007Y91B80/
I've read some horror stories about SATA power connectors melting and could do with some advice:
Should I be using 6 pin power to molex cables straight into the riser boards? If so, what is the name of these cables as there seem to be lots of variants.
If Yes to the above, is it safe to have two RX480s off a 6pin power to split molex cable?
Or should I change to having one 6 pin to sata power to molex into the risers rather than having two graphics cards off one cable?
Everything is running fine on the rig, RX480s about 75C @ 35% fan and nothing overheating so far and cables feel quite cool. But once winter is over I don't want stuff to start melting!
Any advice appreciated!