Closed How strong PSU do I need for my system Tags: Power Supplies Hard Drives Components Product Last response: January 29, 2012 7:16 PM in Components Share omil January 29, 2012 2:56:10 PM Hello, I'm upgrading my pc (or, more accurately, replacing almost everything except things like hdd, dvd drive, case etc.) and I was hoping for some general idea about what PSU to pick. System will end up looking something like this: HD 6770 1GB DDR5 128bit AMD Phenom II x4 960t 3GHz MSI 870-C45 4GB DDR3 300GB hdd (4 years old now but I don't feel like I need a bigger one) 1 DVD/RW drive Final configuration may still be subject to small change but this is pretty much the price range I'm aiming for. I don't necessarily ask for a specific PSU since I might not be able to buy it in my local shops, but some general idea of how strong it needs to be would be greatly appreciated, thanks. More about : strong psu system totalknowledge a b ) Power supply January 29, 2012 3:02:24 PM 400-450W should be fine. The power req on the 6770 isn't that big. omil January 29, 2012 3:08:29 PM Is that 450w as in advertised on the case, or something like calculated 12V power? I only read a few threads about PSUs and I'm not all that savvy. Anyway, my PC already has a 450w PSU so that looks like it's enough? And thanks for the quick reply. Related resources How strong of a PSU do I need ? - Forum New System Build - Is my PSU strong enough? - Forum How strong should my PSU should be? - Forum How to tell if a PSU is not strong enough? - Forum Can a PSU be too strong for a rig? - Forum Can't find your answer ? Ask ! Get the answer ionut19 January 29, 2012 4:16:08 PM As something like this: http://www.newegg.com/Product/Product.aspx?Item=N82E168... (just an example), not like a 15$ PSU witch is a poor quality one and might burn and take your hole system with it. If you have a quality PSU already, use it, if it's a no name one buy another. davcon a c 270 ) Power supply January 29, 2012 5:06:55 PM A quality 400W+ psu with 1x PCI-E will run your specs. Ideally it would be a wise investment to buy a 500-600W with 2 x PCI-E 6 pins if you ever decide to change your gpu. Don't buy junk! Antec,Corsair,XFX,OZC,and Seasonic offer reliable units. Best solution ko888 a c 843 ) Power supply January 29, 2012 5:17:01 PM At a minimum you should have a power supply with a combined +12 Volt continuous current rating of 24 Amps or greater and it should have at least one 6-pin PCI Express supplementary power connector. Total Power Supply Wattage is NOT a crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important. omil January 29, 2012 5:48:40 PM Thanks for the advice, everyone. I'll look for a PSU that fits into those parameters. omil January 29, 2012 5:48:58 PM Best answer selected by omil. Mousemonkey a b ) Power supply January 29, 2012 7:16:25 PM This topic has been closed by Mousemonkey Can't find your answer ? Ask ! Publish Related resources: ForumHow to tell if a PSU is not strong enough? ForumIs my psu strong enough to handle another gtx670? ForumIs my PSU strong enough ? ForumStrong but cost efficient office horse build ForumPSU weak/ strong ForumStrong enough? ForumPsu strong enough? ForumIs this PSU too strong for my pc?-can it burn? ForumIs my PSU strong enough to power my set up in sli ForumWay to put 3pin fan to PWM? Forum[Solved] PSU. Upgrade or use MOLEX 4pin to 6 pin? ForumSystem worth Forum[Solved] A Simple Explantion of a PSU Forum[Solved] Need a quiet PSU ForumWhats the cheapest and best PSU? More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !