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Using a 4 pin molex, splicing to sata

Last response: in Components
March 13, 2010 6:50:14 PM

I just bought a 600 watt PSU and it has no sata connectors, where I am I can only order pc parts online and I don't really want to wait for a shipped out Molex 4-pin to SATA Power Adapter Cable, so I was wondering if i could just cut out a SATA connector from the old PSU and splice it with one of the 4 pin molex's.

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a c 248 ) Power supply
March 13, 2010 9:26:34 PM

The answer to your question is it depends. The standard 4 pin molex power connector consists of 4 pins/cables supplying 5 volts and 12 volts. The Standard SATA power connector consists of 5 pins/cable. The 5th pin/cable is for 3.3 volts. If your SATA device does not require 3.3 volts, then you could splice the cables like this:

I am surprised that your 600 watt power supply does not have any SATA connections. Do you mean there is no SATA port on the power supply? That would be very unusual.
a c 80 ) Power supply
March 14, 2010 1:07:09 AM

Or an old junk PSU. If it doesn't have modern connections its crap. Take it back.
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March 14, 2010 3:25:57 AM

It literally has no SATA connectors, but luckily my budy had a 4 pin to SATA adapter, so no splicing will be needed. I got the PSU for $17 just trying it out on my old CPU.
March 14, 2010 3:26:13 AM

Best answer selected by Oldirty.
a c 80 ) Power supply
March 14, 2010 3:31:46 AM

As I said, junk. Voltage selector switch, no PCIe plugs, 24A on the 12V line. My 500W PSU has 34, and thats 100W less. Its an old PSU built on old rules, that probably won't last long in a modern system. AMD says you need a 30A PSU to run a computer with a 4870. You can't even do that. No offense, but I'd dump it. Get something better.
a c 248 ) Power supply
March 14, 2010 6:00:16 AM

A 600 watt power supply with a +12 volt rail rated at just 24 amps? That's really bad! A high quality 600 to 650 watt power supply will have a +12 volt rail rated at 50 amps. On top of that it is a really old model designed for the Intel P4 cpu. Heck! The darn thing even has two floppy disk power cables. That's ancient history! :( 

Corsair and Seasonic are two of the brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units.

March 14, 2010 4:31:07 PM

Well I did some research on PSU's and I think the one I have in my main system is junk to... lol.. So I was thinking one of these and wanted your opinions:

I am not asking nor expecting you to go out of your way to look one up for me, BUT if you did find any I would love to see a link, THIS PSU would be for my main system,
AMD Phenom II X4 955 Black Edition Deneb, GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard, G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600, XFX HD-477A-YDFC Radeon HD 4770 512MB 128-bit GDDR5
a c 80 ) Power supply
March 15, 2010 3:59:32 AM

The rosewill one is ok, I think. Avoid Azza. There are other PSUs then Corsair Johnny. Antec and Seasonic both make some good ones. I'd check them as well. The Corsair 750 at the top of the list is pretty good however.