Need a PSU, urgent!

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ComputerAddict

ComputerAddict

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Mar 15, 2014
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Hey hey hey guys! Need some help :O
This is my current build (Am ordering it tomorrow) ;
http://uk.pcpartpicker.com/p/3aRoa
Will that 600W psu be up to the job?
Many thanks guys

(note: I will be installing a water cooler and overclocking.)
(edit number two (lol): Budget £70, don't really want to go over £65 if possible)
 
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It will... barely.

I might look for a better quality unit like Seasonic or xfx
I have no problem overprovisioning a PSU a bit. Say 20%.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.
 
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Option 1 - uru3D Power consumption tests (any 280x will do)
http://www.guru3d.com/articles_pages/asus_radeon_r9_280x_top_review,8.html

This is Guru3D's generic power supply recommendation for the R7 and R9 series:

AMD R7 260X - On your average system the card requires you to have a 450 Watt power supply unit.
AMD R7 260X Crossfire - On your average system the cards require you to have a 650 Watt power supply unit as minimum.

AMD R9 270X - On your average system the card requires you to have a 500 Watt power supply unit.
AMD R9 270X Crossfire - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

AMD R9 280X - On your average system the card requires you to have a 550 Watt power supply unit.
AMD R9 280X Crossfire - On your average system the cards require you to have a 750 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...

Option 2 - reputable PSU calculator

http://extreme.outervision.com/psucalculatorlite.jsp

As for the CX (actually made for Corsair by Channelwell, several THG users have reported getting < 11.4 volts (aka "fry your card " terrritory) on the 12v rail. ATX standard is 5% I'd suggest the TX V2 (made by Seasonic).
 
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Cheers mate, using calculator now!

 
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Id suggest 15% for Capacitor aging on a TX V2 using the calculator.... go higher with the CX (see my edit in original post)
 
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Not sure on the 280x, but the Asus DCII review which I quoted gave ya 550 and it , more often than not, edges the Windforce when fully overclocked.....just by single digit percentage points so PSU wont be affected.....will matter less the the higher quality the PSU...

TX V2 > TX > CX
 
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Brand name can not be used as an indicator of quality and you will find that OEM name can not be 100% relied upon as an indicator of quality either. For example.... Flextronics now makes Corsair's top of the line units (AX series). Seasonic made their venerable HX series up to 750 watts. Then again Seasonic made some of the CX and VX series which were not so hot. Seasonic also made Antec's horrendous Neo series .... I have three dead ones, I cannabalized for the fans and to cut molex connectors off them when I need them.

But Channelwell made what was possible Corsair's best PSU ever with regard to stability and low ripple, the HX850 but they also made the dogs that were the 1000 and 1050.

Delta made the CP-850 for Antec which I still consider to be among the best PSUs I have ever owned and it cost me just $100. They made the Earthwatts series which wasn't bad at all but they also make the very well regarded HCG and HCP series.

The way this works is the "Brands" solicit bids to build a series of PSU's either of their own design or to meet certain design or specification criteria..... generally low bid wins which is why ya saw in the TX Line, 3 different OEMs building the lines.....

Channelwell = various versions of 650 - 950 TX, TXM, TX-C
Seasonic = 650 - 850 TX V2
Chicony = 750, 850M

Channelwell's HX850 was a better PSU than Seasonic's TX V2 though in the whole, I'd say Seasonic's has the edge more often than not.

Same thing within Seasonic branded PSU's..... the X series is generally considered among the industries best but the other lines, while very good, fall a little short of some other models...... So, in the end, while using brand name to start you in the right direction isn't a bad idea, look at who made actually made it and then web search for reviews from reputable sites (i.e. jonnyguru.com) before making a decision.

Remember, overclocking in part depends upon voltage stability, low noise / ripple. The MoBo / CPU voltage regulation circuits and even the controllers on board the CPU have to manage and maintain stable voltages .... that job gets much harder to do when under load, the PSUs voltage that it is feeding is bouncing all over the place. Some months back I say two users on THG here report voltages on the 12V rail < 11.4 volts which exceeds the ATX specification ..... I don't wanna see a variance of more than 0.12 volts ... at > 0.6, Id be replecing it.

If I wanna take a Haswell CPU to say 4.4 Ghz and put a 15% OC on a GFX card, I look for a moderately priced PSU with 2-3% voltage variance under load and low ripple. If I wanna do 4.6Ghz and 255 OC on GFX card, I wanna be below 1% voltage stability and even lower ripple.
 
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