Topic: Powering a GPU from 4-pin Molex (Read 8417 times)
Been using both types just fine with my 5850s. Double is safer though, and single could be bad for power hungry cards.
Thanks, good to have another data point!
I run a 7850 from a 250w supply using the 4pin dvd, and a second 7850 from a 305w supply also using 4pin - pcie.
They have been running continuously for a couple of months with no cable-overheat issues... no issues
of any kind really. 365kh each
The 250 supply is right on the edge.
They have been running continuously for a couple of months with no cable-overheat issues... no issues
of any kind really. 365kh each
The 250 supply is right on the edge.
Thanks, notaek. Strange that the 7850 only came with a single Molex to PCIe adapter, rather than a double Molex like the one you posted.
Relatedly, has anyone had success powering a card from spare SATA power, using a cable like this one? http://amzn.com/B007Y91B80
Relatedly, has anyone had success powering a card from spare SATA power, using a cable like this one? http://amzn.com/B007Y91B80
Yeah I use em with no problem. They're nice because some PSUs have a lot of wattage but they lack on the PCIe connector side of things. If you use some of the adapters you can fit a few more cards in.
Make sure that you are using the connectors with 2x4pin molex on em
rather than one with just 1x4pin molex
They might work but a few guys posted a couple weeks ago with their cables burning out because the one molex to pcie couldn't supply enough power.
Make sure that you are using the connectors with 2x4pin molex on em
rather than one with just 1x4pin molex
They might work but a few guys posted a couple weeks ago with their cables burning out because the one molex to pcie couldn't supply enough power.
I bought a Sapphire 7850 card recently, and it came with a cable with 4-pin Molex on one end, and a normal 6-pin PCIe connector on the other. It looks like the intent is for the user to connect it to a power connector that would normally be used with a DVD drive. Since I had a free PCIe connector, I scrounged a PCIe cable and used that instead.
Looking to the future, though, I have two cards that use a single PCIe connector each, and two PCIe connectors available from the power supply. Sometime soon, I'd like to upgrade one of those cards to a more modern card that requires two PCIe connections. If I did that, is it realistic to think I could power the 7850 from a 4-pin Molex? My power supply has the wattage (it's 980 watts, I'm pulling 550 now), but I've never seen a Molex to PCIe cable before.
Looking to the future, though, I have two cards that use a single PCIe connector each, and two PCIe connectors available from the power supply. Sometime soon, I'd like to upgrade one of those cards to a more modern card that requires two PCIe connections. If I did that, is it realistic to think I could power the 7850 from a 4-pin Molex? My power supply has the wattage (it's 980 watts, I'm pulling 550 now), but I've never seen a Molex to PCIe cable before.
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