=> adapter can do 2 x 5A x 12v =120w safely, shouldn't be used for more. so plz guide meĪtx standard says molex contacts must carry up to 5A should i do that? Does it work because they are from different pc. i wonder if that matters because i saw videos which says it doesn't matter we can connect 4 pin to 8 pin. but the only problem is that it has 4 pin eps board connector and my board require 8. and i also have a dell precision t3400 525 watt powersupply which has two 6 pin connectors. with xeon x5670 and it has it's own powersupply and motherboard. first of all i have to tell you my specs. Thank you soo much but i have one idea more.
the molex connectors can handle higher currents, around 5A each, and the metal cntacts are much much better and there's much less risk of melting or burning.Īnd, such adapters are cheap, here's a cheap and good model from Newegg: You should buy a 2 molex to pci-e 6 or pci-e 6+2 adapter and use that. Your power supply should still have the old molex (that were used with IDE hard drives) connectors. The 6pin pci-e connector is supposed to transfer up to 75w to the video card, so if you use a simple adapter that has a single SATA connector at one end, it's not going to end well.Įven with 2 SATA connectors, you'd still transfer nearly 40w through each connector, and while in theory each SATA connector is rated for 54w (so it should be safe), in practice a lot of SATA connectors these days are manufactured using cheaper methods which can cause the SATA connectors to fail in horrible ways when there's significant amount of power going through them (let's say more than 20w).įor example, SATA connectors that use injection molding to seal the covers over the metal contacts can get hot when a lot of power goes through them, which can cause the metal contacts inside to move around and cause short circuits which can cause the connectors to burn. There's 3 contacts inside each SATA connector that carry 12v, and they're rated for 1.5A per contact, so in total you have a maximum permitted of 4.5A. SATA connectors aren't really designed for the power video cards consume. Longer answer: while it's possible, you really shouldn't do it.
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