View Single Post
  #1 (permalink)  
Old September 21, 2010, 06:52 AM
moufen2 moufen2 is offline
Join Date: Sep 2010
Posts: 2
Question How should I add some extra molex?

Hello :)
I have a problem and I could use some advice on how to proceed:

My PSU has 3 molex connectors in one cable and 3 SATA connectors in another. All of my hardware however uses molex to SATA connectors are pretty much worthless to me.
I have 5 devices that need to draw power from the PSU: an ATI 3650 agp (requires molex), two PATA hard disks, one dvdrw and one dvdrom.
So I need a way to connect them all to the PSU, I think I only have two options:

1) Use Y-cables to split the existing molex into more: I could do that, but in that case all the devices would draw power from just one cable. I'm afraid the cable won't be able to deliver so much power without overheating. Plus I'm not sure if the PSU will be able to cope with the load required when I start the PC, when all components draw more power that at an idle state.

2) Convert the SATA connectors into molex and use these to power the optical drives and one of the HDDs: This sounds easier to implement and would require less power going through the cable (since the load is distributed across the molex and the sata cable).

Which one of the two cases would be the best option?

PS: My PSU has two +12V rails, 18A each, with a combined load of 360W (PSU is 400W). Not sure if each of the cables is on a separate rail. I only mention this cause it might help someone more knowledgeable than me answer my question better.
Reply With Quote