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Daisey chaining 2 PSUs for CFed 6850 question

post #1 of 8
Thread Starter 
For a pII x4 40 (127W + its OC), and 2 6850s

I have a seasonic 520W M12ii 80+bronze that has 2 20 amp rails.

And a generic 500W PSU that I need to research more (to make sure its rail/rails are up to the 3 6pin plug part).

Their wires are cut and both ready to be 'green+gray' together.

If possible, I would run the OCed CPU, MB and 1/4 6pin plugs off the seasonic 520W.......and the 2 HDD, DVD, 2 case fans, and 3/4 6pin plugs off the 500W

The bottom line question is:

Does it matter to a 6850, if the 520W was running its PCIe slot and one of its 6pin plugs, and the 500W ran its other 6pin plug.

And on the other 6850, the 520W ran its PCIe slot, and the 500W ran both 6pin plugs.



I don't like this idea
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post #2 of 8
The M12II can provide the power needed; it just lacks in the connectors department.

What's the 500W's brand name and model #?
post #3 of 8
Just the terms "daisy chain" and "PSU" in the same sentence makes me nervous...
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post #4 of 8
Thread Starter 
The 500W is a

MIOS KY 500W ATX

+3.3V @ 30A
+5V @ 32A
+12V @ 24A
-12V @ 0.5A
+5VSB @ 2A


for a single 6850, some places say 450W, others say 500W

so even if I only used the 500W for the HDD, DVD, fans

I don't see how the seasonic could run the OCed CPU, MB and 4 6pin plugs


Not knowing how many rails the 500W has, would the +12V @ 24A be enough for all 4 6pin plugs?
Edited by Mit Namso - 3/7/11 at 7:30pm
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post #5 of 8
Wait wait...doesn't the 6850 only use 1 6-pin? I'm getting confused

The Seasonic should run it fine...
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by jellis142 View Post
Wait wait...doesn't the 6850 only use 1 6-pin? I'm getting confused

The Seasonic should run it fine...
holy crap you're right, the 6850 only needs 1 6 pin plug.
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WD Black 640GB SATA3 Windows 7 Ultimate BenQ 24" G2420HD 1920x1080 SeaSonic M12II 520W 
Case
TV stand on wheels + cardboard door 
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Car replacement
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CPUMotherboardGraphicsRAM
pII x4 40 @ 3.72GHz NB @ 2.79GHz M4A89gtd PRO/USB3 Sapphire 6950 2GB nonRef 950/1520 @1.2V 4GB Gskill DDR3 CL7eco @1656 6-8-6-20-24-1T 
Hard DriveOSMonitorPower
WD Black 640GB SATA3 Windows 7 Ultimate BenQ 24" G2420HD 1920x1080 SeaSonic M12II 520W 
Case
TV stand on wheels + cardboard door 
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post #7 of 8
Quote:
Originally Posted by Mit Namso View Post
The 500W is a

MIOS KY 500W ATX

+3.3V @ 30A
+5V @ 32A
+12V @ 24A
-12V @ 0.5A
+5VSB @ 2A


for a single 6850, some places say 450W, others say 500W

so even if I only used the 500W for the HDD, DVD, fans

I don't see how the seasonic could run the OCed CPU, MB and 4 6pin plugs


Not knowing how many rails the 500W has, would the +12V @ 24A be enough for all 4 6pin plugs?
A "500W" unit with 24A@12V? Sounds like a piece of ****
I looked up some pics of that unit, and it also looks like a piece of ****. I wouldn't connect it to any computer.
Now about connecting two 6850s to your M12II... yes, I believe it would work fine.
post #8 of 8
Problem solved I actually looked on Newegg for 6850's with mad overclocking skills sporting an extra connector...
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