longtailcat

Junior Member
Feb 14, 2008
7
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Disclaimer: Some (most) of my components might be a bit old, let us not lose focus on the actual question with a lot of "upgrade" suggestions, K? Thanks!

I have a "new" graphics card (Sapphire ATI-3850 AGP) coming soon, and I'm wondering what's the best way to supply power? I have a 535 watt PSU, with 2x+12v rails, do I supply power to the card from one +12v rail, or is there an advantage to wiring one each 4-pin supply from each +12v rail? Thank for all and any info.
 

lavaheadache

Diamond Member
Jan 28, 2005
6,893
14
81
Originally posted by: longtailcat
Disclaimer: Some (most) of my components might be a bit old, let us not lose focus on the actual question with a lot of "upgrade" suggestions, K? Thanks!

I have a "new" graphics card (Sapphire ATI-3850 AGP) coming soon, and I'm wondering what's the best way to supply power? I have a 535 watt PSU, with 2x+12v rails, do I supply power to the card from one +12v rail, or is there an advantage to wiring one each 4-pin supply from each +12v rail? Thank for all and any info.

huh, you want to rewire your powersupply? I think you have too much time on your hands
 

longtailcat

Junior Member
Feb 14, 2008
7
0
0
uh, no what I tried to say is one four pin molex feed from each +12v rail, or two, four pin molex from just one +12v rail, no actual "re-wiring" involved, just which feeds.
 

crazylegs

Senior member
Sep 30, 2005
779
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71
As in you need 2x4 pin molex > 6 pin adapter > 6 pin slot on ur GPX card?

I'm no expert but if there is going to be a difference at all, i'd take one from each.
 

Arglebargle

Senior member
Dec 2, 2006
892
1
81
Just did the same thing with that card in a friend's old Dimension XPS, and it worked just fine. One from each. And fingers crossed for luck!
 

Golgatha

Lifer
Jul 18, 2003
12,392
1,058
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Originally posted by: will889
Yes one from each is best.

Uh, NO!

OP, take both 4pin molex 12V not associated with powering the CPU for the 6pin GPU connector. Most likely both from 12V2, but I'd check your documentation if you have it. Make sure to get the 4pin molexes from two physically separate sets of wires too (aka don't plug two 4pin molex connectors for the 6pin from the same length of wire).

OT: This is why I like single 12V rail PSUs. No guessing required.
 

crazylegs

Senior member
Sep 30, 2005
779
0
71
Originally posted by: Golgatha
Originally posted by: will889
Yes one from each is best.

Uh, NO!

OP, take both 4pin molex 12V not associated with powering the CPU for the 6pin GPU connector. Most likely both from 12V2, but I'd check your documentation if you have it. Make sure to get the 4pin molexes from two physically separate sets of wires too (aka don't plug two 4pin molex connectors for the 6pin from the same length of wire).

OT: This is why I like single 12V rail PSUs. No guessing required.


He meant the same thing (i think)... ''one from each'' as in ''one from each seperate length of wire'' as you put it.
 

Golgatha

Lifer
Jul 18, 2003
12,392
1,058
126
Originally posted by: crazylegs
Originally posted by: Golgatha
Originally posted by: will889
Yes one from each is best.

Uh, NO!

OP, take both 4pin molex 12V not associated with powering the CPU for the 6pin GPU connector. Most likely both from 12V2, but I'd check your documentation if you have it. Make sure to get the 4pin molexes from two physically separate sets of wires too (aka don't plug two 4pin molex connectors for the 6pin from the same length of wire).

OT: This is why I like single 12V rail PSUs. No guessing required.


He meant the same thing (i think)... ''one from each'' as in ''one from each seperate length of wire'' as you put it.

I took it as one from each, as in one wire from 12V1 and 12V2. I'm saying two separate wires, which are both on 12V2 would be best, provided the CPU is hooked into 12V1.