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Author Topic: 3x5850 PSU  (Read 1655 times)
no_alone
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June 08, 2011, 05:56:23 PM
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What PSU should I use ??
What PSU do you use??
all I have is ram cpu and hdd thats all
thank you

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kiwiasian
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June 08, 2011, 06:00:01 PM
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My current triple crossfire 5850 rig is powered by a Antec TPQ-850 ($85 AR)

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no_alone
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June 08, 2011, 06:16:31 PM
 #3

You think this could work?
ANTEC TRUEPOWER TRIO 650 WATT

Mine only when pc is IDLE totally indivisible...
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Mine on family computer without disturbing them

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no_alone
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June 08, 2011, 06:40:39 PM
 #4

A 650w PSU would barely support two.  You need at least 850.

Why?
If the max power of one card is 150W then 3 cards is 450W thats 200 free for the system?
Isnt it?

Mine only when pc is IDLE totally indivisible...
http://forum.bitcoin.org/index.php?topic=9851.0
Mine on family computer without disturbing them

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June 08, 2011, 06:46:22 PM
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I recently set up a triple 5850 system with a i7, 4gb ram, asus p55 board (I know it's a waste, but just had that around), and at full mining power I measure a total power consumption of ~560W.

I also bought an 850W PSU, just to be on the safe side, but from the figures (and with a more efficient mabo/cpu), I'd guess a 650-700 one would also suffice.
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June 08, 2011, 07:13:34 PM
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I recently set up a triple 5850 system with a i7, 4gb ram, asus p55 board (I know it's a waste, but just had that around), and at full mining power I measure a total power consumption of ~560W.

I also bought an 850W PSU, just to be on the safe side, but from the figures (and with a more efficient mabo/cpu), I'd guess a 650-700 one would also suffice.

As I suspected...
I'm also using 1 stick of 2gb core 2 due . Much less power

Mine only when pc is IDLE totally indivisible...
http://forum.bitcoin.org/index.php?topic=9851.0
Mine on family computer without disturbing them

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Freakin
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June 08, 2011, 08:55:56 PM
 #7

I recently set up a triple 5850 system with a i7, 4gb ram, asus p55 board (I know it's a waste, but just had that around), and at full mining power I measure a total power consumption of ~560W.

I also bought an 850W PSU, just to be on the safe side, but from the figures (and with a more efficient mabo/cpu), I'd guess a 650-700 one would also suffice.

if power consumption at the wall is 560W then the system is probably only using about 450W
kiwiasian
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June 08, 2011, 10:11:51 PM
 #8

Yes a 650w would suffice, though personally I would go with at least 700w just because I'm OCD.

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SchizophrenicX
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June 09, 2011, 03:12:08 AM
 #9

A lot of people have already verified that running a 4x 5850 over a good 850W PSU. I don't think ur's gonna give you any problem

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