Topic: The Correct Way of Powering Your Risers for your RX 470/480 (Read 5109 times)

how is ur setup with 2 psus?


i think u need to have something like  http://www.add2psu.com/

to get the 2 psus to work together.

gonna buy one, give it a try .I had one of the version 6's burn up so i need something better from the PSU to the riser . The wire looks like the right wire or what is used to make  Pcie plugs . is that wire 16 weight ?.

Use this awesome PCI-E 6 pin powered riser: http://www.ebay.com/itm/131996650201?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Your PSU probably supports more 6-pin GPU power connections than old skool molex 4-pins.

Unfortunately the PCIe Slot power is at least 5Amps or so for the 470/480. Some of the 6 pin 480 even use much more than 5 Amps. You can't power too many of them with the daisy chain Molex and especially the SATA connectors. Even the 8 pin 470s draw around 5 Amps from the slot.

If you have the space, best would be to install NO MORE THAN 1 of your 470/480 directly onto the motherboard.

I would avoid using any SATA connectors to power any of the 470/480 GPUs. They draw at least 60 watts and those SATA connectors are generally used for hard drives which draw about 5 watts on average.




I wouldn't use any more than 1 of the Molex connectors to power any 470/480. Usually a PSU has 2 sets of these (6 molex in total) so you can power 2 GPUS from each seperate chain.



The best method would be as follows. Usually most PSUs have 2x 6+2pin on each chain such as follows.



You would plug in one of those to your 470/480 #1 connection and the other would always be unused. Since the length wouldn't reach the next card. So you would buy a PCIe extension cable such as below



Plug in the unused PCIe #2 connector to this extension and splice the other end +12V and GND directly onto your Risers power.



This way you could run any number of high power 480s and overclock them to the max and you would never have any melt since the PCIe has plenty of power and is a higher gauge.

Yes that is the best way. Although you may not want to connect more than 2 gpus per molex chain. 3 may be okay but I am not certain

Is it ok to connect powered risers directly with the molex? I have a 5 non ref RX 470, all with 8 pin connectors.

I bought some of the 6pin powered risers from holybtc, will try them soon

Kilo17 can you please provide a link to Amazon/Newegg/Ebay for the powered risers that you use and stand behind? I have done alot of research and have found quite a few that seems to work, but my mining farm is virtual... Ie it just exsists in my head since my wife thinks "Saving for vacation next summer is more important than your stupid mining hobby"...  

I have over 250 GPU's running and have been mining a long time.  I will be happy to show you a BIG BOX of worthless USB risers.  Every brand, color, manufacturer.  Secondly, If your friend is running some 480's it is probably a new build - give it some time. 

My friend is running a rig with 4 RX 480 8GB Devil after market cards with the USB 3.0 and he has no issues. This tells me it's the quality of the risers you purchased are junk!

My friend is running a rig with 4 RX 480 8GB Devil after market cards with the USB 3.0 and he has no issues. This tells me it's the quality of the risers you purchased are junk!