DnaAngel Posted November 15, 2011 Posted November 15, 2011 (edited) I am looking to upgrade a I5 system from a Geforce GT 430 card to a Radeon HD 6750 but was confused as to the PSU requirements for the card..I currently have a 400 Watt PSU and the 6750 says it needs a 450watt minimum yet when i ran 3 different PSU calculators and plugged in all the info AND set the TDP wattage to peak 100% system load they all tell me the recommended psu wattage is 362 watts and thats at 100% system load on all componets. Not sure exactly what brand PSU is in this rig its a Asus Essentio Cg 5275.. just wondering if i can get away with keeping this PSU? Edited November 15, 2011 by DnaAngel Quote Share this post Link to post Share on other sites More sharing options...
Stonerboy779 Posted November 15, 2011 Posted November 15, 2011 (edited) Open it up and feed us some specs from the sticker on the side of the OEM PSU. Edit: Scrap that some how missed the 400watts. However does it have the necessary pci-e connectors and have you checked to see if the 400 is followed by p2p or p ect. Edited November 15, 2011 by Stonerboy779 Quote Share this post Link to post Share on other sites More sharing options...
DnaAngel Posted November 15, 2011 Posted November 15, 2011 (edited) Open it up and feed us some specs from the sticker on the side of the OEM PSU. Edit: Scrap that some how missed the 400watts. However does it have the necessary pci-e connectors and have you checked to see if the 400 is followed by p2p or p ect. Yes it has PCI-E connectors. heres what the side of the PSU reads +3.3v/18A +5v/18a +12v1/16a +12v2/17a +5vsb/2.5a -12v/0.3a +5v & +3.3v OUTPUT CANT EXCEED 130w +5v, +3.3v, +12v1, +12v2 OUTPUT CANT EXCEED 390w +12va, +12v2 OUTPUT CANT EXCEED 300w didnt see P or p2p just says at top Max Output 400watt then below that is what i posted Edited November 15, 2011 by DnaAngel Quote Share this post Link to post Share on other sites More sharing options...
DnaAngel Posted November 15, 2011 Posted November 15, 2011 (edited) but if i use the PCI E connectors and PSU calculators are only putting the Wattage at 362 at max system load theoretically i should have no problem and that 362 is including the 6750 at max wattage... i just assumed that they put 450Watt on there so ppl can pop it in and thier 100% safe it dosent bog down other components with watt deprivation in system that use alot of hardware/addons its a surefire saftey wattage. Unless they put safegaurds in teh hardware to detect the PSU wattage..back in the day i got black screen with a Geforce FX 5500 on a 200 watt PSU soon as the driver installation got to installing the drivers, the drivers went to enable and black screen everytime. but i also had a high end p4 and other compoonents on that 200watt cheapo psu as well,,, Edited November 15, 2011 by DnaAngel Quote Share this post Link to post Share on other sites More sharing options...
Stonerboy779 Posted November 15, 2011 Posted November 15, 2011 If i was going to use that PSU i would in effect make both 12v lines one. Bridging them so there would be a theoretical ~32-33amps to play with but your card should be alright with that PSU. Quote Share this post Link to post Share on other sites More sharing options...
Kamikaze_Badger Posted November 15, 2011 Posted November 15, 2011 What brand of PSU is it? It's been a bit since I was involved heavily with hardware, but last I knew generic brands tend to have lower quality parts and lower QA standards. If you're upgrading your entire system, bite the bullet and get a decent name brand one. Quote Share this post Link to post Share on other sites More sharing options...
Boinker Posted November 15, 2011 Posted November 15, 2011 You know its alright to deliberate and question the quality or the capability this psu has to operate the card. But what I would do is get a new 600 Watt or 650 and not worry about it. If the cards min requirement is 450 Watts and we cannot face whether this psu has the guff to operate the card then there is no sense in putting it to the task. Quote Share this post Link to post Share on other sites More sharing options...
DnaAngel Posted November 16, 2011 Posted November 16, 2011 I agree but im trying not to.. I just figured if with every component including the mentioned video card running at 100% load my wattage is still under 400watts it just dosent make sense to me that it wouldn't work Quote Share this post Link to post Share on other sites More sharing options...
DnaAngel Posted November 16, 2011 Posted November 16, 2011 I agree but im trying not to.. I just figured if with every component including the mentioned video card running at 100% load my wattage is still under 400watts it just dosent make sense to me that it wouldn't work Quote Share this post Link to post Share on other sites More sharing options...
DnaAngel Posted November 16, 2011 Posted November 16, 2011 I agree but im trying not to.. I just figured if with every component including the mentioned video card running at 100% load my wattage is still under 400watts it just dosent make sense to me that it wouldn't work Quote Share this post Link to post Share on other sites More sharing options...
Waco Posted November 16, 2011 Posted November 16, 2011 You'll be just fine IMHO assuming your psu is actually rated correctly. Quote Share this post Link to post Share on other sites More sharing options...
Hyper Posted November 17, 2011 Posted November 17, 2011 Yes it has PCI-E connectors. heres what the side of the PSU reads +3.3v/18A +5v/18a +12v1/16a +12v2/17a +5vsb/2.5a -12v/0.3a +5v & +3.3v OUTPUT CANT EXCEED 130w +5v, +3.3v, +12v1, +12v2 OUTPUT CANT EXCEED 390w +12va, +12v2 OUTPUT CANT EXCEED 300w didnt see P or p2p just says at top Max Output 400watt then below that is what i posted You would be pushing that psu pretty hard.. and you wouldnt be able to oc anything as you would exceed the wattage.. Even then I doubt the psu would last that long and you would most likely end up replaceing it anyway and hopefully it wouldn't take anything with it. Quote Share this post Link to post Share on other sites More sharing options...
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