System watts Tags: Homebuilt GPUs Power Systems Last response: February 24, 2013 2:42 AM in Systems Share winslade February 24, 2013 1:59:35 AM My system with no GPU requires 200watts. On my GPU box it says it requires 450watts - Do they add the average system watts to this? Seems odd my system has a lot of fans etc, but according to pcpartpicker the GPU only uses 100watts (650ti) Realistically doesn't that mean I could use a 300watt PSU? Whats the deal about this *Just for knowledge, I do have a 520watt to power my system More about : system watts smeezekitty February 24, 2013 2:32:44 AM Yes, but just barely. The GPU manufactures base the number on the average system draw and pick a number that is likely to handle it. Bad practice IMO. winslade February 24, 2013 2:37:53 AM Hmm strange, so they almost just blow numbers out of there ass in a way, good to know however thanks Can't find your answer ? Ask ! Get the answer anort3 a c 81 B Homebuilt system February 24, 2013 2:42:47 AM A system with a GTX 650 Ti needs a recommended 430w power supply. That's for the entire system not just the card. http://www.realhardtechx.com/index_archivos/Page362.htm Manufacturers do not just make up a number when they recommend a power supply wattage. They have to assume you have a generic, low quality unit and base their recommendations on that. The GPU is the main power hog in any modern system. Fans use a few watts each as do hard drives. With no GPU pretty much any computer woud be fine with a 250w power supply. Can't find your answer ? Ask ! Publish Related resources Can I run my system on 250 watts PSU?? - check my configuration Forum What graphic card can I get to upgrade my system with only 220 watts ? Forum Is 600 watts enough power for my system Forum How to decide on SMPS watts for a system Forum Low Power System - Below 20 watts (yes, that's 20, not 200) Forum My 25 watt system consumes 50 watts - why? Forum Will my system run on a 300 watts PSU ( with ati radeon 4670 or 4650) Forum How many watts psu does this system need? Forum Is 400 watts enough power for my system ? Forum Software for cpu/ system watts ? Forum How many watts am I using? Forum How much PSU watts do i need? Forum How many watts will my system consume? Forum What power supply do I need ( watts )? Forum How much watts ? Forum How many watts do I need for this system config? Forum Will a 7850 work with a Powercooler 500 watts ? Forum Which of these computers is better? Forum System Recomendations i5 3570k EVGA GTX 670 Forum Is my system bottle-necking? Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !