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Author Topic: Best PSU to buy?  (Read 8220 times)
no_alone
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June 02, 2011, 09:49:58 AM
 #1

What is the best PSU one should get?
What brand I mean? Cost?

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russelljohnson
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June 02, 2011, 09:52:45 AM
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depends on what you want to run

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Nythain
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June 02, 2011, 09:53:03 AM
 #3

Should probably look more at important things like...
Max wattage
Efficiency rating
Number of rails
Amperage of each rail

More important than brand names and prices. Asking best brand and price is gonna get you 50 different opinions from 50 different people Tongue

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June 02, 2011, 09:55:14 AM
 #4

Seasonic's X series is good.

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June 02, 2011, 09:56:46 AM
 #5

Seasonic's X series is good.
The best of the best, you can't go wrong with Seasonic X

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no_alone
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June 02, 2011, 09:58:46 AM
 #6

I sow some pepole running 5 cards...
What psu they using
?

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fasti
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June 02, 2011, 10:35:18 AM
 #7

One that doesn't explode, cheap ones are bad: http://www.overclock.net/power-supplies/183810-faq-recommended-power-supplies.html

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June 02, 2011, 10:40:43 AM
 #8

I sow some pepole running 5 cards...
What psu they using
?
Probably more than one.
For 2X5870 X-Series 650W should be enough. For 2X5970, 850W.

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June 02, 2011, 11:32:27 AM
 #9

I sow some pepole running 5 cards...
What psu they using
?
Probably more than one.
For 2X5870 X-Series 650W should be enough. For 2X5970, 850W.
I used Corsair TX650w with 2X5870  Wink
Now, with 2X5870 +1*5850, I use XFX Black Edition 850W  Cool
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June 02, 2011, 11:48:39 AM
 #10

I have some of these on the way http://www.newegg.com/Product/Product.aspx?Item=N82E16817139014
wol-va-rine
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June 02, 2011, 12:45:24 PM
 #11

Should probably look more at important things like...
Max wattage
Efficiency rating
Number of rails
Amperage of each rail

More important than brand names and prices. Asking best brand and price is gonna get you 50 different opinions from 50 different people Tongue

I would actually look more at the continuous wattage, max wattage isn't sustainable in most cases and the number of rails doesn't matter...
keybaud
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June 02, 2011, 12:58:03 PM
 #12

depends on what you want to run

THIS.
Meatball
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June 02, 2011, 01:23:51 PM
 #13

Can a PSU straddle more than one machine?  Say you have two boxes with 4 cards each.  Could you stick a 600-700 on each mobo and then set up a third PSU to feed some of the cards off of each mobo?
Genrobo
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June 02, 2011, 04:06:31 PM
 #14

Can a PSU straddle more than one machine?  Say you have two boxes with 4 cards each.  Could you stick a 600-700 on each mobo and then set up a third PSU to feed some of the cards off of each mobo?

Yep, that's possible.
There's actually supplemental PSU's they sell made just to juice graphics cards and processors.
Some even fit in a 5.25" drive bay.

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June 02, 2011, 04:54:28 PM
 #15

Efficiency wise I would recommend

1. Seasonic X (80+gold)
2. Corsair A (80+gold
3. Silverstone Strider + (80+ silver or gold)

Though they do come at a price premium, but I use those for most of my work units.

I don't mind running a few crappy miners either since they cost next to nothing. Using basic 300W Fortron/FSP psu's they run 24/7 just fine since last Sept.,, although incur higher electricity costs and are less efficient.

And they are practically limited to 5850s and 5770s so no efficient dual gpu setups possible.

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mlouca
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June 03, 2011, 03:36:19 AM
 #16

for 4 6990s would which psu would you recommend?
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June 03, 2011, 03:38:16 AM
 #17

for 4 6990s would which psu would you recommend?

I recommend an Antec 1200 High Current Pro, I have used one and ran 1800W (measured wall draw) continuously for weeks with no problems. I have also seen where the rating has been exceeded for up to 2100Watts and the PSU still held together!

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June 03, 2011, 03:45:02 AM
 #18

how about a motherboard to support 4 6990s with an external water cooling system?
PcChip
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June 03, 2011, 03:48:19 AM
 #19

http://www.tomshardware.com/reviews/750-watt-psu-80-plus-gold,2927.html


FSP AU-700 is what I'd buy after reading that review.

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5850 - 400 MH/s  |  5850 - 355 MH/s | 5830 - 310 MH/s  |  GTX570 - 115 MH/s | 5770 - 210 MH/s | 5770 - 200 MH/s
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June 03, 2011, 03:52:53 AM
 #20

how about a motherboard to support 4 6990s with an external water cooling system?

The asus Rampage III Extreme, Maximus III Extreme, and Croshair 4 extreme are all very reliable and comparable. they were designed for 4 GPU solutions and dont need any PCIe cables or converters.

For an external cooling system that will scale with larger systems and multiple systems Koolance has some rackmount solutions
http://www.koolance.com/water-cooling/product_info.php?product_id=1173

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