Required amps on 12V rail? Tags: Graphics Cards Pci Express Graphics Last response: August 15, 2010 4:54 AM in Graphics & Displays Share lk34r August 15, 2010 2:23:19 AM Does the the amperage on the 12V rail from the PSU need to exactly match the requirements of the video card? I have a 500W PSU with 18A and a PCI-E 6+2 connector I'm trying to decide on a low-end card for some moderate gaming. More about : required amps 12v rail | E-mail me updates | Report abuse Register or log in to remove hunter315 Graphics card Master August 15, 2010 2:28:41 AM The ratings of the PSU are just what is available, components only pull what they need. The ratings on the GPU are always for the system as a whole and they test with a pretty high end system. Now does your 500W unit only have a single 12V rail at 18A? If so you definitely need to upgrade that because its weak for a 350W unit. | Report abuse Timop Graphics card Master August 15, 2010 2:30:39 AM No, but 18A is pretty low for a 500W, are you sure it doesn't have multile rails for 12v? For you (if you really have only 12A), the best card I would suggest is a HD5670. | Report abuse jsc Graphics card Authority August 15, 2010 4:50:46 AM What kind of PSU? | Report abuse jyjjy Graphics card Master August 15, 2010 4:54:12 AM Yes, tell us the brand and model. Unless it is ancient you are incorrect about it having just 18 amps on the +12v. Even if it is a poor 500w you can likely use at least an HD5770. | Report abuse Register or log in to remove Ask the community Publish Tom's Hardware>Forum>Graphics & Displays>Required amps on 12V rail?> Related ressources: Forum7770 and 650Ti 12v rail Amps compared to my PSU ForumEnough Amps on the 12V Rail ? (EVGA GeoForce 660Ti OC Edit. 3GB GDDR5) ForumHow many amps do i have on my 12v rail ? ForumPSU Too much amps on 12v rail ? - need electronic expert ForumWill a GPU even work if the amps on a 12v rail are to low? ForumCould this system run on a *500W PSU* [375W, 31 Amps 12V , Dual rail ] ForumWhy would I get a split rail PSU if it offers less 12V amps ? Forumtoo many amps on single 12v rail ? ForumWhats enough amps on the + 12V rail ? ForumNeed 22 amps on the + 12V Rail ForumWill 9800gt 1GB run on 400watt 12v rail @18 amps ? ForumHd 6670 minimum amps on its + 12v rails? ForumFaulty psu?, combined amps on 12v rails?, and future proofing my rig? Forum+ 12v rail amp question ForumHiper 580W Type R for GTX 560: 12V 20 amp rail ? ForumPlease help me choosing a GFX Card ForumHardware Specification Required (Intel) Forum[Solved] How man 12v amps will I need to crossfire two 5850s? Forum[Solved] 9800 gt:+12v rail concerns Forum[Solved] 4 +12v rails rated at 18amps each on a 700w can it power an ati 5770? More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !