Is my PSU enough??

[SupaMonkey]

Yea, ok i'm sorry, it's another question like this. But, seeing as you are reading maybe you can help.

I know online psu calculators overpredict but this doesn't seem right. At the moment i am running a 300W supply with this setup and absolutely no problems.

Oc'd E8400
2 x ddr2 @ stock voltage (2.2)
ssd hard drive + 1 external through the usb
corsair h70
HD4870.

The asus psu calculator says i need 450W. I'm not having problems but i can't help but wonder if i am losing performance somewhere because i don't have enough juice. Any comments/suggestions?

Thanks.

 

[Yensen]

The outervision PSU calculator takes into account a pretty wide range of circumstances like capacitor aging and 90-100% load.

I wouldn't be comfortable running that with a 300W PSU. But that's me.

 

[Marshmallow64]

You probably need about 400 watts for that rig, 300 is really low. I would get a new psu asap.

 

[k88]

If you can´t get any PSU asap you can try stock that 8400, is not going to have much difference but is to start.

 

[jmdixon85]

You probably need about 400 watts for that rig, 300 is really low. I would get a new psu asap.

+1

 

[EarthDog]

I doubt you are losing performance anywhere, but you are definately stressing out that PSU. I would bet on load you are close to 275W or so...

Corsair 450CX would be a great fit for that system. Maybe 550VX to run any single GPU out there really.

 

[SupaMonkey]

ok, thanks.

I would have thought i would have seen some signs of psu stress that's all. I haven't had any crashes etc.

Time to cough up 70 quid i guess.

 

[SupaMonkey]

Does my signature work??

 

[EarthDog]

Yes.

 

[SupaMonkey]

Haha

 

[qubit]

Just to reinforce what the other posters on here have said: get a new, higher-powered PSU ASAP. A 300 watter is not powerful enough to run that system comfortably, even if it seems ok now. And that 4Ghz is a hell of an overclock, which will add a significant power drain. Take that out for now, straight away.

Tell me, what brand and model is it? If it's a cheap no-name one then I'm surprised it hasn't blown up yet - and I really do mean a bang and lots of smoke. I've had several cheapies go like that.

Look at my system and its PSU. My Corsair is well overpowered for the load I put on it, but it never bats an eye and runs really cool, quiet and reliably 24/7. Yeah, it's worth going for extra with a PSU.

 

[Bobnova]

If it's a quality 300w, with 300w or very close of 12v, then it will work, but it's pushing it.
A quality 400 or 450 (read: Corsair) is a better choice.

 

[SupaMonkey]

Ok,

I just installed my VX550 which was a pain in the *** because the motherboard power supply was under near my H70 radiator. It seems to be working fine.

The power supply i was using before (came with it, yes i'm a noob) was a Huntkey.

This is written on the side

12V1 11A; 12V2 8A; 3.3V 21A; 5V 15A; -12V 0.3A; 5VSB 2.5A

Which i make to be 131W, 96W, 69.3W, 75W. Or 371W (but it does actually say 300W on the side).

 

[qubit]

I take it that "VX550" is a 550W Corsair PSU? If so, it's a good PSU to run your system on.

I don't know why you think it says 300W on the side? This is a 550W PSU.

 

[SupaMonkey]

Yes, the VX550 is the corsair.

The 300W was the old one.

 

[qubit]

k, got it.

 

[Bobnova]

You are very, very, very lucky that old PSU didn't cause rather major issues.