Will this PSU handle my PC?

flymano

Junior Member
Mar 9, 2013
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Hello everyone,
i'm about to get a new PSU, and i was thinking about getting the OCZ CoreXstream 500 w to power this system:
VTX3D HD7850 1Go
E8400 @ 3.4 ghz
2x2GO DDR2

thanks in advance.
 

_Rick_

Diamond Member
Apr 20, 2012
3,952
70
91
That's plenty.
You can probably get away with less than half that power.
 

flymano

Junior Member
Mar 9, 2013
7
0
0
thanks for the reply
so even though this is a cheap one, but it's decent enough to run this system?
 

lehtv

Elite Member
Dec 8, 2010
11,897
74
91
That's plenty.
You can probably get away with less than half that power.

What? No, you could not get away with a sub 250W unit. Such units don't even have PCIe connectors, and the +12V rail would risk being overpowered.
Hello everyone,
i'm about to get a new PSU, and i was thinking about getting the OCZ CoreXstream 500 w to power this system:

Minimum I recommend for a normal system with a 7850 is 400W. But CoreXStream is a not a good unit to get, try a reliable brand like Corsair, Antec or Seasonic to name a few.
 

_Rick_

Diamond Member
Apr 20, 2012
3,952
70
91
An 8400 @ 3.4 will draw what, 100-120W?
And the GPU slightly more than a 100W? Up to 140 under Furmark.
So a hypthetic decently specced 250W PSU would be just about enough.
Whether or not 12V has enough amps on the offer, depends from PSU to PSU - these days most PSU's offer around 95-100% on 12V. If a PSU doesn't, it's highly suspect.
PCIe connectors can be easily bought after-market and plugged onto two molex 4-pins. They're not magic in any way.

So while in the extreme case, of a hot OC, and furmark, a 250W PSU might be running at 105%-110%, that's within tolerances for most well-made PSUs.

A 350W 80+ Gold or Platinum is probably the safest bet. Sadly, below 350W there isn't much to be fund with regard to quality ATX PSUs. I recommend Seasonic, FSP or Enermax, in that order. Better to go for an expensive "small" PSU, than a cheap "big" one, simply because it gives you better protection for the built-ins, less fire risk, better efficiency at idle (where most non-gaming usage puts you) and partial loads, less noise and longer life span. Paying more for less Watts usually makes sense.
 

flymano

Junior Member
Mar 9, 2013
7
0
0
Should i get the corsair cx430 v2 then? or the FSP Hexa 400/500 ? thanks for your replies
 

Bricked

Member
Mar 8, 2013
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0
Should i get the corsair cx430 v2 then? or the FSP Hexa 400/500 ? thanks for your replies

If you're going to get a Corsair, I'd get the CX400. That one is built by Seasonic. The 430v2 is made by CWT, which some people like but I wouldn't trust. I don't think that anyone would recommend CWT over Seasonic, anyway.

Otherwise you can't go wrong with Seasonic or XFX (all their PSUs are built by Seasonic). There are other PSUs that are good but other brands use different manufacturers for different models so it gets a bit tricky.
 

flymano

Junior Member
Mar 9, 2013
7
0
0
corsair cx400 is out of stock, only the cx430 is available
i think i'll just go for an fsp hexa 400w, i won't be making any more overclocking
 

lehtv

Elite Member
Dec 8, 2010
11,897
74
91
If you're going to get a Corsair, I'd get the CX400. That one is built by Seasonic.

The CX400 was last in production about 3-4 years ago.

The 430v2 is made by CWT, which some people like but I wouldn't trust. I don't think that anyone would recommend CWT over Seasonic, anyway.

Nothing wrong with CWT, and even though it's not Seasonic that's not a reason to distrust it. Almost the whole HX range of Corsair units are CWT and they're all excellent
 

Face2Face

Diamond Member
Jun 6, 2001
4,100
215
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To anyone reading this post - If you have PSU questions - Just PM Lehtv or Eureka- These guys has always been the biggest help with PSU's :D

Guys you thank me later once you finish-up with the PM's
 
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xXdragonbatXX

Senior member
Mar 25, 2013
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myworld.ebay.com
Anything over 360 is good. 500 is generally good for any build. Would make sure it is 80 plus certified though. Also make sure it will work with your video/graphics card. Some cards have need 2 pci ports and some psus have 1.