What PSU wattage will i need for my gaming PC?

Tani Bhatt · Aug 13, 2015

Hi,
Recently bought a system with following configuration:
Core i5 3550 3.5ghz
500GB Western Digital Hard disk
8GB 1600Mhz RAM
Gigabyte B75M D3H Mobo
Sapphire HD 7850 2GB Dual-x Overclocked Edition
Deepcool GAMMAXX400 Cooler

Im considering to buy Corsair VS 550Watt PSU.
But im confused as i dont know how much electricity will all consume.
Please experts guide me.

rcald2000 · Aug 13, 2015

The wattage is technical enough for that card, but the quality of that specific power supply is tier 4, which is horrible. Do not buy it. Buy a tier 1 or 2 PSU, and consider getting more wattage to future proof your build, in case you plan on upgrading to a more powerful graphics card in the next few years.

*** power requirements for graphics cards ***
http://www.realhardtechx.com/index_archivos/Page362.htm

*** power supply tier list ***
http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

Tier Four
No Japanese capacitors found. Only Taiwanese capacitors and may even include Chinese capacitors. Very basic safety circuits or even thin gauge wiring used. Not for gaming rigs or overclocking systems of any kind. Avoid unless your budget dictates your choice.

Tani Bhatt · Aug 13, 2015

Im on a tight budget.
Will i consider a 500watt psu from tier 2?
does a 500watt psu will be enough for my specs.im not considering for future upgrades

rcald2000 · Aug 13, 2015

Yes, that's sufficient. Happy gaming.

Tani Bhatt · Aug 16, 2015

I have 550watt PSU now.
I want to overclock my GPU Sapphire HD 7850 OC Edition to 1250 core Clock speed and memory clock to 1450.
Can i do that?

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What PSU wattage will i need for my gaming PC?

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