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Am I at my PSU's limits?

post #1 of 17
Thread Starter 
Hey all I've been running a Corsair HX750W for around a year. I think I might be hitting the limit of it now. I'm running a I7 930 oc'ed at 3.8 using 1.27v, 2 460gtx's oc'ed with +50mv and my case fans, controller and wc pump. I've not experienced really any instability with the system or overclocks but I have the sinking suspicion I'm getting near its limitations. Can anyone help me out with this and how to check and see if its time for an ug.
Edited by MURDoctrine - 10/23/11 at 7:21pm
post #2 of 17
your probly getting very close to its limit. i would say your fine as long as you dont add anymore to the system, at least stuff that draws a lot of power.
post #3 of 17
You can go and have an estimate of how much power your computer is using by going to a psu calculator. Just type in psu calculator into Google or your preferred search engine and click on one of the first ones.

If it is pushing close to the limit, you could do what I did and get a 2nd power supply that would act as the secondary to your main power supply. The main one will power the motherboard, cpu, graphics cards, etc. While your secondary one will power the other stuff that you see fit. I just found some old 250 watt power supply laying around so I added it onto my 700 watt one. I would recommend getting and dual-power supply adapter online. The only place that I found that sells these is at FrozenCPU, they are like $14.
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post #4 of 17
I think you have quite a bit of head room with that system. It is usually recommended to have a quality 650W PSU for 460 GTX's in SLI, and I doubt that your CPU is eating up that much power.

Plus, you have a very good PSU so yeah - you are fine.
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post #5 of 17
Thread Starter 
I did the psu calculator with the closest cpu since mines not listed and it showed me using around 840w. That wasn't including my led kit and fan controller, although I'm not sure how much it uses tbh. Its a lamptron FC-5 and can support up to 30w per channel.
Edited by MURDoctrine - 10/23/11 at 7:23pm
post #6 of 17
Quote:
Originally Posted by MURDoctrine View Post
I did the psu calculator with the closest cpu since mines not listed and it showed me using around 840w.
Which calculator?
    
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post #7 of 17
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post #8 of 17
Thread Starter 
Quote:
Originally Posted by FiX View Post
Which calculator?
The one on this forum.

http://www.overclock.net/power-suppl...l-release.html
post #9 of 17
Quote:
Originally Posted by MURDoctrine View Post
I did the psu calculator with the closest cpu since mines not listed and it showed me using around 840w.
Did you use the Extreme Power supply calculator?

Yours is the Core i7-930 2.8Ghz Bloomfield right?

EDIT: Just read your post, I never used the calculator on this site sorry.
Edited by thrplayer1 - 10/23/11 at 7:27pm
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post #10 of 17
Quote:
Originally Posted by MURDoctrine View Post
Hey all I've been running a Corsair HX750W for around a year. I think I might be hitting the limit of it now.
Nope, you're fine. You'd start crashing if your power supply was being overworked. Just an fyi, but I used my HX520 to run a 2500k with a gtx580 with zero problems. The only reason I move it is because I try to keep the best parts in Comp #1 since it's the one I upgrade first as time goes on.
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