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Title: 4x PCIe risers on 1 molex cable? Post by: Mattthev on May 23, 2017, 12:09:29 PM I've bought molex risers and those sata adapters aren't looking quality ones. I have Corsair HX1200 and there are 2x molex cables each have 4 molex connectors.
Can I use 1 molex cable to 4 risers? Or it's better buy 1 additional molex cable for 10 bucks? I have 4 sata cables but they aren't good what I heard. Thanks. Title: Re: 4x PCIe risers on 1 molex cable? Post by: mo35 on May 23, 2017, 01:11:33 PM 4 raisers on one molex cable will either melt your cable , or molex cable socket on psu. 2 is safe , i did some 3 raisers but for first days i was checking cable constantly for temps , 4 will eventualy melt
Title: Re: 4x PCIe risers on 1 molex cable? Post by: Mattthev on May 23, 2017, 02:02:17 PM 4 raisers on one molex cable will either melt your cable , or molex cable socket on psu. 2 is safe , i did some 3 raisers but for first days i was checking cable constantly for temps , 4 will eventualy melt Thx, so I will buy 1 more molex cable. Or do you know which sata adapters are safe?Title: Re: 4x PCIe risers on 1 molex cable? Post by: Wotan Wipeout on May 23, 2017, 02:47:33 PM It depends on the GPU. Lets say you have Zotac 1070 Amp with 2x PCI-E than you can go for 4 x Sata to Risers
Dont try this with AMD 480 and so.... Title: Re: 4x PCIe risers on 1 molex cable? Post by: 64dimensions on May 23, 2017, 03:04:09 PM I would say no.
This is an advanced move in the sense that you are absolutely sure that your cards are setup correctly (undervolt,CC,MC) in terms of power draw EVERYTIME prior to running the mining S/W such that you won't overload the cable. I would only do this if I were waiting for a repair part. As an extreme example from a mistake of mine, I had a sapphire 580X nitro+ LE on quiet mode. I didn't set it up and this card runs 1411/2000 out of the box. These settings consume about 2X the power that I normally run it at. Several of these on one molex cable would have cooked it. I generally avoid actions which require continuous perfection in any mining setup. There are many posts in this forum and in the ethereum forum which discuss more precisely cable power limits. Title: Re: 4x PCIe risers on 1 molex cable? Post by: Mattthev on May 23, 2017, 03:22:34 PM I would say no. Molex should have 11A max, that's not even for 2 cards :D I read very different posts, one say 2 cards per 1 molex other say 3 is no problem. I think it very depends on PSU and cable quality. I think Corsair should be very good one, but I will buy third molex modular cable so I can run 2 cards per 1 cable. I will also try 3 cards for test because my mobo should run up to 8 gpus...This is an advanced move in the sense that you are absolutely sure that your cards are setup correctly (undervolt,CC,MC) in terms of power draw EVERYTIME prior to running the mining S/W such that you won't overload the cable. I would only do this if I were waiting for a repair part. As an extreme example from a mistake of mine, I had a sapphire 580X nitro+ LE on quiet mode. I didn't set it up and this card runs 1411/2000 out of the box. These settings consume about 2X the power that I normally run it at. Several of these on one molex cable would have cooked it. I generally avoid actions which require continuous perfection in any mining setup. There are many posts in this forum and in the ethereum forum which discuss more precisely cable power limits. Thx guys. |