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What powersupply shoud I use+ Does full load damage your CPU?

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June 22, 2011 5:15:54 PM

Hi, I need a new power supply between 600-700 watts, so maybe 800 maxium.

I've got a Ati radeon 4850 GFX card which needs 450 watt.
I've got a artic freezer pro 7 which takes 130,
various case fans,
and a Neo vortex fan on the Ati radeon card+intel duo core CPU.

So need something to run this niceley without it dying otu so fast.

On a side note: I've been running my CPU under 100% for the last few days (not constantly, just whilst playing a game)

I wanna know that if it's on 80-100 for more than 2 hours, will it damage it? The heats ok, but I just ain't sure.

It's a 3.0 intel duo core E8400 wolfdale CPU
a b ) Power supply
a c 159 à CPUs
June 22, 2011 5:26:38 PM

No. As long as your cpu temp is below 70c, you'll be fine. Get a corsair or antec power supply at about 600 watts if you can afford it. Avoid cheaper brands such as powmax, raidmax, or thermaltake (except for some high end models, which may be made by another brand, such as seasonic).
a b ) Power supply
a b à CPUs
June 22, 2011 5:30:00 PM

Your HD4850 does not need 450w. Your whole system needs 450w.

Arctic cooling freezer 7 pro uses 130w?? Seriously? More like 5w.

Tell us what cpu you have, how many hdd's and what other components and we can help you more.
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June 22, 2011 6:58:34 PM

geekapproved said:
Your HD4850 does not need 450w. Your whole system needs 450w.

Arctic cooling freezer 7 pro uses 130w?? Seriously? More like 5w.

Tell us what cpu you have, how many hdd's and what other components and we can help you more.



Hi geek, oh is it 450 watts? Because when I brought it said on the box I would need a 450 watt powersupply, thats fine tho if it's the whole system. And on Artic freezer pro 7 box, it does say 130 watts, or do they mean again, the whole system?
June 22, 2011 7:06:02 PM

geekapproved said:
Your HD4850 does not need 450w. Your whole system needs 450w.

Arctic cooling freezer 7 pro uses 130w?? Seriously? More like 5w.

Tell us what cpu you have, how many hdd's and what other components and we can help you more.


This is the full list.

SATA hdd x 1 500gb
1 dvd re-writer
Ati radeon 4850 ASUS stock clocked - With a Vortexx Neo Fan
Intel duo core E8400 @ 3.0 Wolfdale - Artic freezer pro 7
NZXT Hades case, with 3-4 fans
Fan control
EP41-UD3L GIGABYTE motherboard
6xGB RAM
Standard ATX 500wat powersupply which came with case.
June 23, 2011 5:01:00 AM

i hope i'm in the right thread to ask this question.well here goes.

here is my desktop pc specs as follows:
AMD Phenom II X4 955 BE @3.2ghz
Windows 7 Home Premium 64-bit
AMD 880G Chipset
ATI Radeon HD 5450 with 512MB of dedicated DDR3 VRAM
6GB DDR3 Dual-Channel Memory
640GB 7200RPM SATA Hard Drive
16X DVD+/-R/RW SuperMulti Drive
LG Electronics WH10LS30K 10X Blu-ray SATA Writer Drive
Ultra Lsp 450w PSU

i'm moving everything from my acer mini tower to a full tower that has alot better air flow that comes with 8 fans.here is the link to the case i'm getting and i was wandering if my PSU would be enough to power everything in my new case along with all the 8 fans.i was thinking about getting a 750w PSU from the same company.please let me know what you guys think.here is the link to the case.
http://www.amazon.com/gp/product/B00457X10A
a b ) Power supply
a c 159 à CPUs
June 23, 2011 10:31:50 AM

No. Your ultra power supply is a low end unit, prone to failures under load. Your example is what I see frequently from inexperienced builders. You would rather spend big $$ on a pretty case than get a decent power supply. Well, don't cry to us if you have problems later. You would be better off getting a plainer case such as the antec 300 series with a decent corsair or antec power supply. Newegg also has a fancy case in their shellshocker deals later this morning if you can order from them. It should be much cheaper than the one from amazon.
a b à CPUs
June 23, 2011 10:46:52 AM

OP: the 130watts quoted for your Arctic freezer 7 is the thermal dissapation it can handle.

i.e. it can be used with CPU's up to a TDP of 130W. Its power consumption is very small.
a b ) Power supply
a b à CPUs
June 23, 2011 1:45:01 PM

A fan does not use 130w, it uses 5w or less.

The power supply recommendation that comes with your video card is for the entire computer, not just the video card.

There is no way your system uses 577w. Probably more like 400w.

That being said, a cheap (ultra) 500w psu usually does not even put out a REAL 400w because they cheat with the rating.

A QUALITY 500w psu, will put out a real 500w.

June 23, 2011 6:05:58 PM

geekapproved said:
A fan does not use 130w, it uses 5w or less.

The power supply recommendation that comes with your video card is for the entire computer, not just the video card.

There is no way your system uses 577w. Probably more like 400w.

That being said, a cheap (ultra) 500w psu usually does not even put out a REAL 400w because they cheat with the rating.

A QUALITY 500w psu, will put out a real 500w.


Hi, yeah I know about the cheap atx powersupplies that why I want a decent one. But the ones these guys have shown me are 50-60. Money worth it? Yes ofc, but I haven't got that money to spend at this moment.

Is there a cheaper option?
June 23, 2011 6:27:17 PM

Btw I ran your system through the power supply calculators (pro tip for the future, do this) and even grossly overestimating everything else I still couldnt get more than 360 power draw in a realistic situation.


That one I linked is 80+ bronze rated which means 430W is a very realistic maximum and would last for years in a system like what you've got.
a b ) Power supply
a c 159 à CPUs
June 23, 2011 11:03:35 PM

Newegg has an antec 650 earthwatts power supply for only $55 shipped, if you're on their email list. The promo code ends today.
a c 144 ) Power supply
a c 172 à CPUs
June 24, 2011 9:33:24 AM

tilyardinit said:
This is the full list.

SATA hdd x 1 500gb
1 dvd re-writer
Ati radeon 4850 ASUS stock clocked - With a Vortexx Neo Fan
Intel duo core E8400 @ 3.0 Wolfdale - Artic freezer pro 7
NZXT Hades case, with 3-4 fans
Fan control
EP41-UD3L GIGABYTE motherboard
6xGB RAM
Standard ATX 500wat powersupply which came with case.

Your system will not pull more than 280 - 300 watts.

One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260 - a card with similar power requirements to yours, a Gigabyte EP45-UD3P motherboard, 3 hard drives (2.6 TB total) and an optical, and a Soundblaster card all powered by a Corsair 750TX.

Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% efficiency, the system pulls 300 watts from the PSU.
June 24, 2011 1:28:22 PM

jsc said:
Your system will not pull more than 280 - 300 watts.

One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260 - a card with similar power requirements to yours, a Gigabyte EP45-UD3P motherboard, 3 hard drives (2.6 TB total) and an optical, and a Soundblaster card all powered by a Corsair 750TX.

Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% efficiency, the system pulls 300 watts from the PSU.


well thats really re-assured me that my computer is not getting enough watts then lol.
My PSU is a 500 watt - but only a 19.99 one, I've got 700watt - again just a cheap one..
I know the watts on it is fake, so if my computer does use 200-300. Wouldn't a 700watt be more than enough? Even if the 700watt was only giving 400-500 or w.e?

Then again would the 500 one be ok also?
June 24, 2011 1:55:01 PM

The only issue with buying a cheap PSU isnt so much max watts, its overall quality.

The power will be much 'dirtier' i.e. there will be more fluctuations which can damage internal components, the lifetime will be much, much less, and the overall reliability will be greatly decreased.

Granted this isnt the case always, but its much more likely with a cheap PSU as opposed to Antec, Seasonic, Corsair, etc.


One of my main mottos whenever Im building a system is to spend good money on the PSU no matter what. Even if it means a smaller HD, or slightly less RAM, or whatever. The PSU is the engine when it comes to your computer, if its not running well, it can affect every other part, even going so far in rare cases as to completely fry the mobo
June 25, 2011 7:25:11 AM

well i finaly i got everything transferred to my new case and i'm running 7 fans except for one and the temps have been staying between 35-40 degrees celcius.i'm only using a 450w ultra lsp psu and the temps was between 50-60 degrees celcius.it seems everything been running fine so far.i was wandering if you guys think my psu will last a long while if it's been doing this good so far.even if some people think the ultra lsp's are low class psu's.just saying.let me know what you guys think.
!