How much bigger power supply unit I would need for this setup?

Question

Hello everyone,

Could someone please help me on this as I am really confused about what's the right Power Supply Unit I would need to run this setup without any problems.

My specs are:

CPU:AMD Phenom II X4 B50 3.10 GHz Black Edition,8MB Cache
Memory:4GB (2GBx2GB)DDR2 800 MHz
Motherboard:Asrock N68C-S-UCC
Graphics:ATI Radeon HD 3870 X2 1GB,256bit,GDDR3
Hard Drive:Samsung HD204UI 2TB SATA Hard Drive 5900rpm 32MB Cache
Cooling includes an aftermarket Xilence Heatsink with Copper base and Quad Copper heatpipes with a high performance Xilence Fan runs at 7000rpm.
Also has 80mm Cooler Master Case Fan 4-pin
Alumnium Heatsinks attached to RAM modules
Sound Card:C-Media CMI-8738 6 Channel Sound Card
Optical Drive:Dual Layer DVD Rewriter 24x

On USB ports I just got a printer attached and my bluetooth dongle.

My system load is mostly 80%-90% if this information is also helpful for anyone.

I ran an online power supply calculator and when I put my system specs it gives me total of 422w as result.

I am not planning to run SLI or Crossfire in future and I don't do any overclocking either so I just want a good power supply unit to run my computer without any problems.

I can spend up to £80 on the power supply but if anyone can recommend me a good power supply for less then £80 then please do so I will be greatly thankful to you.

Thanks

Answer 1

For what you've described a good 550-600 watt power supply is plenty. Here's one from Corsair:



http://www.ebuyer.com/269259-corsair-600w-cx-series-v2-psu-6x-sata-2x-pci-e-cmpsu-600cxv2uk



These are even better:

http://www.ebuyer.com/159920-antec-truepower-new-650w-modular-psu-0761345-07660-9

http://www.ebuyer.com/257232-corsair-tx-650w-v2-psu-80plus-bronze-certified-cmpsu-650txv2uk



Note that better quality trumps higher wattage. A 600W unit from Antec, Corsair, OCZ or Seasonic is superior to a 700W model from a low-quality brand like Casecom, Arctic Cooling, Diablotek, or CiT.



http://www.eggxpert.com/forums/thread/323050.aspx

Answer 2

That may be the power consumption that they estimated but I'd go at least 650 watts. The wattage rating of a power supply is what it is capable of providing. Your system will only use what it needs. A larger power supply won't labor so hard also. Go 750 or higher if money isn't an object.

Answer 3

The only answer to that is get the biggest one you can afford.



Maplin have a good range of PSUs



http://www.maplin.co.uk/search?criteria=psu



This one is an 880 W for £69.99 and appears to be right up you street!



http://www.maplin.co.uk/880w-g7-atx-psu-393047



Also all equipment only draw the power they need so this 880 wouldn't

even break into a sweat but leaves you loads of room to upgrade.

Answer 4

Power supply Guide ...

http://www.youtube.com/watch?v=JG6uw0QFEFI



Low wattage PSU's and GPU's Guide ...

http://www.youtube.com/watch?v=LTQoH-j5KZY

Answer 5

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049





This is plenty and pretty cheap

OR

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088

These guys make the best on the market