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Windows 7: Choosing the right psu

12 Dec 2011   #1

Windows 7 Home Premium 64bit
Choosing the right psu

How much w would i need for this system:
-i5 2400 3.1GHz
-Gigabyte GeForce GTX 560 1GB GDDR5
-Asrock Z68 Pro3
-WD Caviar Blue 500gb 7200rpm
-Sony Optiarc 24x dvd r/w
-Corsair Vengeance 8GB DDR3 1600MHz

My System SpecsSystem Spec

12 Dec 2011   #2

Windows 7 Home Premium 64bit sp1

Depends on your graphic card needs and periphials that need extra power to be run

ussualy 500 to 550 watt is good enough but if you want a little more headroom for future upgrades get atleast a 600 watt or greater
My System SpecsSystem Spec
12 Dec 2011   #3

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit

Not much.

The system below, with your video card, uses under 300 watts under load and under 200 at idle. Your i5-2400 will use a bit less than the test system's i-7 920.

I'd get something in the 400 to 500 watt range unless you intend to get some other graphics card.

Processor: Intel Core i7 920(ES) @ 4.0Ghz (Turbo Mode Enabled)
Memory: Corsair 3x2GB Dominator DDR3 1600Mhz
Motherboard: Gigabyte EX58-UD5
Cooling: CoolIT Boreas mTEC + Scythe Fan Controller (Off for Power Consumption tests)
Disk Drive: Pioneer DVD Writer
Hard Drive: Western Digital Caviar Black 640GB
Power Supply: Corsair HX1000W
Monitor: Samsung 305T 30 widescreen LCD
OS: Windows 7 Ultimate N x64 SP1

NVIDIA GeForce GTX 560 1GB Review - Page 15

Attached Thumbnails
Choosing the right psu-untitled-1.jpg  
My System SpecsSystem Spec

12 Dec 2011   #4

Windows 7 Home Premium 64bit

Ok. Thanks!
My System SpecsSystem Spec
12 Dec 2011   #5

Windows 8.1 Pro RTM x64

According to, the minimum power requirements are 450W. Given that, I would recommend a psu of 650W.
My System SpecsSystem Spec
12 Dec 2011   #6

Windows 7 Home Premium 64bit

Ty, but i think 550 will be enough.
My System SpecsSystem Spec
12 Dec 2011   #7

Windows 7 Ultimate SP1 x64

Why don't you calculate with this PSU Calculator ?

eXtreme Power Supply Calculator
My System SpecsSystem Spec

 Choosing the right psu

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