- Mar 5, 2007
- 195
- 0
- 18,680
I have an older rig with a x1950 Pro 512MB card in it.
The card has two molex connectors on the end for additional power.
My power supply is new - TT toughpower 750W. It has 4 12V rails that are
apparently broken up as follows: main power on one 12V rail, 4pin12V on another, PCI-E connectors on another
and everything else (molex and Sata) on the fourth. Each rail is individually rated for 18A (though you can't have
them all at 18A at the same time).
Anyway, right now since my mobo is AGP, I really can't make use of the PCI-E. I've got pretty much everything
in my system on the single 18A rail (2 raptors in raid0, DVD, card reader/floppy drive, 5 80mm fans and the GPU).
As best I can figure I'm under the 18A max for the rail, but when playing a game like Oblivion I can hear a high pitched whine come from the PSU. I was thinking of buying a spare PCI-E connector (its a modular PSU) and
converting it to a molex so I could hook up at least one of the molex's on the GPU to it and off load the one rail a bit.
Looking at the pin outs, I was thinking of just leaving the +5V on the molex unconnected - I doubt the GPU uses it but I'm not 100% sure. Anyone out there know if this is the case? Would this work?
Thanks,
Sdrac
The card has two molex connectors on the end for additional power.
My power supply is new - TT toughpower 750W. It has 4 12V rails that are
apparently broken up as follows: main power on one 12V rail, 4pin12V on another, PCI-E connectors on another
and everything else (molex and Sata) on the fourth. Each rail is individually rated for 18A (though you can't have
them all at 18A at the same time).
Anyway, right now since my mobo is AGP, I really can't make use of the PCI-E. I've got pretty much everything
in my system on the single 18A rail (2 raptors in raid0, DVD, card reader/floppy drive, 5 80mm fans and the GPU).
As best I can figure I'm under the 18A max for the rail, but when playing a game like Oblivion I can hear a high pitched whine come from the PSU. I was thinking of buying a spare PCI-E connector (its a modular PSU) and
converting it to a molex so I could hook up at least one of the molex's on the GPU to it and off load the one rail a bit.
Looking at the pin outs, I was thinking of just leaving the +5V on the molex unconnected - I doubt the GPU uses it but I'm not 100% sure. Anyone out there know if this is the case? Would this work?
Thanks,
Sdrac
Facebook
Twitter
Instagram