Solved How to know what power supply you need Tags: Homebuilt Power Supplies Intel Systems Product Last response: June 12, 2012 4:33 AM in Systems Share techguy123 June 10, 2012 8:24:33 PM Hello, i am building my first computer and i don't know which power supply i need can you help? me these are my specs: -Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 -radeon hd 7850 sapphire oc edition -16gb ddr3 ram memory -ASRock B75 PRO3 LGA 1155 Intel B75 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard -Western Digital Caviar Green WD10EZRX 1TB IntelliPower SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive -ASUS Black Blu-ray Drive SATA Model BC-12B1ST/BLK/B/AS - OEM -windows 7 home premium 64-bit OEM More about : power supply Outlander_04 a c 136 B Homebuilt system a b ) Power supply June 10, 2012 8:42:05 PM Graphics cards are the main power user in a computer so its safe to size your psu using this http://www.realhardtechx.com/index_archivos/Page362.htm Buy only 80+ bronze [ or better] rated units . Check that it has the power connectors you need . Esp pci-e power connectors for graphics cards And you dont even need 8 gig of RAM for a gaming computer m 0 l Best solution Ironslice June 10, 2012 8:53:27 PM First of all: Get only 8GB of RAM Get this motherboard: http://www.newegg.com/Product/Product.aspx?Item=N82E168... Get this power supply: http://www.newegg.com/Product/Product.aspx?Item=N82E168... Share Related resources how do I know what size power supply I need - Forum How to know what kind of power supply you need when upgrading you pc - Forum How do you know what power supply you need - Forum How do i know what kind of power supply i will need - Forum I dont know what power supply i need. please help?! - Forum Can't find your answer ? Ask ! Get the answer meow_way June 11, 2012 3:29:59 PM Due to the graphics card you need a 500w cpu; however, I'd hedge my bets esp for further additions with a 650w one. m 0 l techguy123 June 12, 2012 4:30:24 AM Thanks dude m 0 l techguy123 June 12, 2012 4:30:44 AM Best answer selected by techguy123. m 0 l techguy123 June 12, 2012 4:33:14 AM Hey Ironslice with this i can run a gtx 570 or i should stay with my radeon hd 7850? m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedHow do I know what power supply to get Forum SolvedReplacing a power supply--what do I need to know? Forum SolvedNeed to know what power supply would be good Forum need to know what power supply best for this build? Forum SolvedHow to Know What Power Supply Will Work Forum i am sliing my pc i want to know what power supply ill need. Forum I think I need a new power supply for my Geforce 670 - but I don't know what to get Forum Ineed to know what kind of power supply i need for my fantom external hard driv Forum I NEED TO KNOW WHAT GRAPHICS CARD AND POWER SUPPLY TO GET Forum Dont know what size power supply my build will need please help Forum NEED TO KNOW WHAT SIZE POWER SUPPLY TO GET FOR THIS SETUP IM GETTING Forum SolvedDon't know how to connect GTX 780 to power supply Forum SolvedI need to know if i have to upgrade my power supply. Forum SolvedHow do I know if a power supply has a 20 or 24 pin connector? Forum SolvedDon't know what power supply is compatible with my motherboard Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !