Corsair HX850 enough?

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Rustyy117

Rustyy117

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Oct 10, 2008
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Hello informative people of Tomshardware

I'll start by listing my PC components

Corsair Obsidian 800D
Corsair HX850
Core i7 920 @ 4.3Ghz 1.360V
POV GTX570 Beast Ed. @ 950/1900/2200 1.2V X2 (Second one hasn't arrived yet)
3 x 1GB OCZ 1333Mhz 8-8-8-24 Running at 1230Mhz 6-7-6-18 1.68V
Sammy Spinpoint F3 500GB (Plan on buying an SSD soon)
10 Case fans all 12V
Gigabyte GA-EX58-UD5
A Cold cathode
A 18W Pump
A 10W Pump
DVD Drive
Blu Ray drive
Mouse, keyboard, Headset.

So is my 850W PSU good enough ? :heink:
 
Solution
hunter315
The HX850 is very conservatively rated, its stronger than many 1kW units on the market, its more powerful than the Antec CP-1000 unit, so the wattage rating on the unit doesnt mean much. That Guru3d review has the power measured at the wall, and has 2 GTX 570s pulling 410W from the wall which on an 85% efficient unit is about 350W from the PSU which seems about right.

The HX 850 is a very strong unit for an 850W unit and will be plenty for that system, hardware secrets was able to pull 1000W from it with it staying above 80% efficiency and in spec before it shut down, you have plenty of power available.

http://www.hardwaresecrets.com/article/741/8
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Silvune

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Oct 17, 2009
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To me it seems like a stupid question, of course it will be able to power your build. No offense mate.

Edit: the one 'problem' you might have is needing to daisy chain some of your fans, as the Corsair HX850 has twelve 4-pin peripheral (molex) connectors, to me it looks like you'd need 13, but daisy chaining is easy and not really a problem at all.
 
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Rustyy117

Rustyy117

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Oct 10, 2008
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Well I figured a stock 570 eats about 215W, so an overvolted card would eat 250W roughly, times that by 2 = 500W, Plus a highly overclocked CPU = 200W roughly. So thats 700W
+ Mobo, RAM, HDD, Fans, Pumps.... thats surely another 150-200W which gives a total of 850-900W max load.

Its an expensive rig, so to me its not a stupid question.
 
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aford10

aford10

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Oct 2, 2008
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Personally, I don't like to cut it that close.

But, before I just decide to upgrade the PSU, I think I'd try it with my current PSU.

The PSU wattage doesn't matter all that much. There's a vast difference in how PSU's are rated. Some can meet their claims, some can't. This is why I believe most recommendations on PSU wattage are overestimated a touch.
 
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hunter315

hunter315

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May 12, 2009
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The HX850 is very conservatively rated, its stronger than many 1kW units on the market, its more powerful than the Antec CP-1000 unit, so the wattage rating on the unit doesnt mean much. That Guru3d review has the power measured at the wall, and has 2 GTX 570s pulling 410W from the wall which on an 85% efficient unit is about 350W from the PSU which seems about right.

The HX 850 is a very strong unit for an 850W unit and will be plenty for that system, hardware secrets was able to pull 1000W from it with it staying above 80% efficiency and in spec before it shut down, you have plenty of power available.

http://www.hardwaresecrets.com/article/741/8
 
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