18A on 12V rail 550Ti?? Tags: Power Supplies Gtx Power Components Last response: October 16, 2011 8:14 PM in Components Share NoobNeb October 16, 2011 5:29:19 PM I have a 'no-brand' 400W PSU with a 12V rating of 18A. What would happen if I used it to power a GTX 550Ti that requires 24A on the 12V rail?? (In other words how big would the explosion be?? ) More about : 18a 12v rail 550ti | E-mail me updates | Report abuse Register or log in to remove MrQZETOL October 16, 2011 5:38:18 PM I'm guessing that if you're just underpowering it the gfx card would not run as good as it would with the proper amperage | Report abuse NoobNeb October 16, 2011 6:15:47 PM So technically it could be fine?? | Report abuse hairystuff Power supply Expert October 16, 2011 6:19:56 PM with 3d running the machine could become unstable | Report abuse Related ressources PSU w/ 18A on 12V rail for GTX 650? - Forum Is psu with 18a on + 12v rail enough for hd 7750 - Forum 23a on 12v Rail enough for 550 ti? - Forum PowerColor HD6790 on 18A 12V rail - Forum GTX 470 SLI - 4x 12v Rail @ 18A each? Is it enough? - Forum Ask the community Publish lilotimz Power supply Master October 16, 2011 6:36:44 PM Other than a high chance the power supply will just plain out fail and give out some cancerous smoke alongside a good firework show and a pc that has everything fried. Not much. | Report abuse 13thmonkey Power supply Authority October 16, 2011 6:46:20 PM it depends, it could fail in such a way as to damage other components | Report abuse NoobNeb October 16, 2011 6:54:14 PM Right I won't risk it so | Report abuse 13thmonkey Power supply Authority October 16, 2011 7:06:07 PM i'm trying to help somone at the moment who was running a system off a 250W PSU that was at least 50W short in terms of 12V power, currently nothing works except fans, i'm loaning him a PSU and crossing fingers for him.... | Report abuse beenthere Power supply Authority October 16, 2011 8:14:20 PM More than likely the PC will crash when you put the Vid card under load. Some power sensing Vid cards may not boot at all with such low amps. available on the 12v rail. | Report abuse Register or log in to remove Ask the community Publish Tom's Hardware>Forum>Components>18A on 12V rail 550Ti??> Related ressources: Forum500w psu with 2 18a 12v rails enough for GTX 260? ForumEnermax 535w dual 18A 12v rails enough for 8800gtx? ForumWhat is the "correct" way of calculating amps on multiple 12V rails? ForumThree 12V lines at 18A ForumIs 18A on 12V line enough for asus gts450 direct cu top Forumis 400W/Dual rail at 18A enough for 8800gts? ForumPower Supply for GeForce 550Ti - Understanding Requirement ForumSingle 12V rail or multiple 12V rails? The eternal question answered ForumXonar Phoebus & Quality Sound Forum[Solved] 12 volt rail seems weak? Forum[Solved] PSU rail count question? ForumGood cpu with a gtx 550ti Forum[Solved] Corsair 650TX single vs Antec Green 650 dual 12v rail Forum[Solved] Disburse Power on Multi Rail PSU ForumGTX 560 or 550Ti Psu requirements More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !