Sladen Posted April 18, 2015 Share Posted April 18, 2015 I have this new PSU bought a month ago, installed and working well already. Coolmax 500 wat. http://www.newegg.com/Product/Product.aspx?Item=N82E16817159087 I got this GPU as a gift but not sure if the amps on my PSU are good enough for it. PNY GTX 750 non ti 2gb. The "minimum 12V current rating of 20 amps" confuses me. http://www.bestbuy.com/site/pny-nvidia-geforce-gtx-750-2gb-gddr5-pci-express-3-0-graphics-card/6955228.p?id=1219243024152&skuId=69552 I am aware that neiher is great for gaming on Ultra but I'm just trying to play some older games on an older PC at medium settings. Link to comment Share on other sites More sharing options...
Mindovermaster Moderator Posted April 18, 2015 Moderator Share Posted April 18, 2015 Well, recommended is 400W, you will probably never hit that. What's the rest of your system like? Link to comment Share on other sites More sharing options...
Sladen Posted April 18, 2015 Author Share Posted April 18, 2015 CPU is dual core Intel Pentium D 830 / 3 GHz and Intel 945G Express Chipset. About 6-7 years old, but never any issues. Windows 7 Ultimate 64 bit os with 6 GB ram, not sure what type/speed. Less than two years old. Current GPU is MSI GT 720 2 gb and working awesome, like a new pc feeling. A little more oomph from the GTX 750 would be nice though. CPU/Mobo are dinosaurs but I am saving for a new pc anyways, so wont bother replacing them at this point. Link to comment Share on other sites More sharing options...
skinnycoins Posted April 19, 2015 Share Posted April 19, 2015 Would think your 500 watt is more than sufficient - I was messing around with digital currency mining last year and had 2 of MSI Gaming 750ti's running on a Silverstone 450watt PSU - no issues as all. Other than that, had an AMD dual core CPU on a FM2 mb, an SSD, 8gb RAM. My base system possibly drew a little less power than your system, but these 2 cards were running at 90+% 24/7 for several months - I don't remember having any issues at all. Love the maxwell cards - they just sip at the juice For reference - MSI 750ti http://www.newegg.com/Product/Product.aspx?Item=N82E16814127783&cm_re=msi_750ti_gaming-_-14-127-783-_-Product Silverstone PSU http://www.newegg.com/Product/Product.aspx?Item=N82E16817256063&cm_re=silverstone_psu_450-_-17-256-063-_-Product Sladen 1 Share Link to comment Share on other sites More sharing options...
Mindovermaster Moderator Posted April 19, 2015 Moderator Share Posted April 19, 2015 As long as it does what you want, any dinosaur can become your norm. Yeah, that PSU should work fine with it. Sladen and goretsky 2 Share Link to comment Share on other sites More sharing options...
Sladen Posted April 19, 2015 Author Share Posted April 19, 2015 The thing is that the GTX 750 card asks for 12V@20A. My PSU stats have: ATX 12V V2.2/EPS 12V V2.91 Modular 115 / 230 V 50/60 Hz +3.3V@21A, +5V@22A, +12V1@17A, +12V2@17A, +12V3@12A, -12V@0.5A, +5VSB@2.5A None of the 12V amps are higher than 17. Unless they all count as being added up? Which would be 46. The card prefers every 12v to be at least 20? Link to comment Share on other sites More sharing options...
ShadeOfBlue Posted April 20, 2015 Share Posted April 20, 2015 It's saying that they recommend having a total of 20A available on the 12V rail for use by the entire PC once that card is installed. The card itself easily uses less than 5A of that. Your PSU has the 12V split into three rails. What that means varies depending on the internal construction of the PSU, but the bottom line is that you have way more than enough power. You could use a much less powerful PSU and still be just fine. Link to comment Share on other sites More sharing options...
philcruicks Posted April 20, 2015 Share Posted April 20, 2015 You should be fine, as has been said already wither regards to V's and amps on the rails, and 500W should be enough for that system. You could also have a look at http://www.extreme.outervision.com/psucalculatorlite.jsp it can help you calculate what you system is likely to consume overall and/or when you come to make a new PC can help with the power estimates for that. Sladen 1 Share Link to comment Share on other sites More sharing options...
MikeM97 Posted April 20, 2015 Share Posted April 20, 2015 I have a 550W one and I'm happy with it ... Never get below 400W/450W ... Sladen 1 Share Link to comment Share on other sites More sharing options...
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