4-Pin to PCI-e adapters

[Fickster287]

So I've seen the PCI-e adapters that take 2 4-pin connectors and produces a 6-pin PCI-e connector. I'll admit I don't know much about PSU's so here's my question:

If my PSU has 2 chains with 3 connectors each, will I be alright? It seems wrong to take 2 from the same chain. I have 2 optical drives and 1 HDD which I'm assuming take 1 each (not at my setup at home). So would I use one 4-pin from each chain to turn into a PCI-e? Would it matter which 4-pin I take (i.e. the first, second, third on each chain)?

 

[Crosshairs]

If its a single rail PSU , it really makes no difference, as the power is coming from the same place...although, I would use 2 different "chains" anyway to split up the load on the wires......

The first one on the "chain" would be best as this one is likely to have the least loss...although, the loss at the other 2 is probably insignificant ..unless there are really poor connections ..then resistance can substantially effect them....

 

[Fickster287]

If its a single rail PSU , it really makes no difference, as the power is coming from the same place...although, I would use 2 different "chains" anyway to split up the load...

It says +12V1 and +12V2 at 15A and 18A respectively. So 2 rails right? Does it matter which connector to use on each chain?

 

[Crosshairs]

Sounds like 2 rails....just use one from each rail......which connector really doesn't matter..honestly, just use the one that reaches best

Most likely, the end one...

 

[mavalpha]

Doesn't matter. First rail is dedicated to the motherboard, second rail feeds all drives. Both chains are connected to the same rail.