Will this PSU be enough?

BGeorgiev

Reputable
Jul 17, 2014
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This is my build:
*CPU | Intel Pentium G3220 3.0GHz Dual-Core Processor
*Motherboard | ASRock H81M Micro ATX LGA1150 Motherboard
*Memory | Kingston Fury Series 4GB (1 x 4GB) DDR3-1333 Memory
*Storage | Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
*Video Card | Sapphire Radeon R7 260X 2GB Video Card
*Case | NZXT Source 210 (Black) ATX Mid Tower Case
*Optical Drive | Samsung SH-224DB/BEBE DVD/CD Writer
*And 3 or 4 Fans

So, i'm wondering if the Corsair CX430 will be enough to power up this build or I should get the Corsair CX500 or the Seasonic S12II 520w (even though it's very old) or the XFX Pro Series 450w/550w. That's probably all i want to ask.
 
Solution


The XFX 450 is built with higher quality components than the CX430 and that's why it has a longer warranty period.


The XFX 450 is built with higher quality components than the CX430 and that's why it has a longer warranty period.
 
Solution


I read on Johnnyguru that the 12V rail on the XFX 450 was not that good going off the charts or something like that in some cases. I know that CX430 doesn't have very good longetivity. Kinda hard to choose between these...
 


• XFX PRO 450W (P1-450S-XXB9 / XPS-450W-SEW) Discontinued
• XFX PRO 450W v2 (P1-450S-X2B9)

JonnyGURU.com reviewed the discontinued model. It's based on an upgraded Seasonic S12 II Bronze 430W (SS-430GB) that also has the same behavior. The Seasonic S12II-520Bronze (SS-520GB) also exhibits the same crossload test voltage behavior. These are all older group regulated design PSUs.

The Corsair CX430 is also an older group regulated design PSU. I've seen crossload testing of this PSU that shows that it stays within the ATX12V allowable voltage limits.
 


Alright. So the XFX P1-450S-X2B9 is the stable version? If so, I'll get that.
 


Now I'm not sure if I should get it or go for the CX430..
 


I don't think you will be crossloading the PSU so you should never encounter the problem.
 


I don't really know what that means so I guess I'll go with the XFX PSU as it has longer warranty and better components. Thank you for the help!
 


The problem happens when the +12V rail is very lightly loaded and the +3.3V and +5V rails are heavily loaded. This is similar to what would be encountered on very old Pentium systems from many years ago where the CPU was powered from the +5V rail.

Modern systems draw most of their power from the +12V rail and little from the +3,3V and +5V rails.
 


So, that means that with the newer version of the power supply, drawing the power out of the +12V rail, the problem from the old PSU won't be encountered?
 


The older version shouldn't encounter the problem either, unless you decide to use that PSU in a very old system.
 


You can see the system on top of the topic.
 


An LGA1150 Socket system is a modern system.
 

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