I need PSU help. What PSU is good for this build?
 

The Build:

Intel Core 2 Duo E6750 Conroe 2.66GHz 65W Dual-Core Processor [Planning to clock to 3.2ghz]
MSI P35 Neo2-FR Core 2 Quad Socket 775 1333MHz PC2-8500 (DDR2-1066)
OCZ Reaper HPC Edition 2GB(2 x 1GB) 240-Pin DDR2 DDR2 800 (PC2 6400) Dual Channel Kit
ARCTIC COOLING Freezer 7 Pro 92mm CPU Cooler
Western Digital Caviar RE WD1600YS 160GB 7200 RPM SATA 3.0Gb/s
SAMSUNG 20X DVD±R DVD Burner Black PATA Model
Palit GeForce 8800GT Sonic 650MHZ 512MB 1.9GHZ DDR3 PCI-E 2XDVI-I HDCP HDTV Out

Question is: What PSU should I get? How many watts total with how many 12v+ rails?
I can only afford a PSU under $90.

how about an antec neohe550? top notch seasonic built product.

Pancho, is this one good? I think it would do it!

http://www.newegg.com/Product/Produc...82E16817139004

lovely! another top notch seasonic built product.

Thanks for the fast reply. I need something under $90. You sure 550W is enough to power this system up? I did some calculating using the extreme power supply calculator and it said I need 630W. But I heard that it over exaggerates the watts.

EDIT: How about this one??
http://www.newegg.com/Product/Produc...82E16817341010

it does. a quality 550w psu should be fine. i a run a similiar system to you and my psu hardly breaks a sweat when im clocked up to 3.0 on my cpu.

630? You must have pumped up the volts on the e6750 way to high when you used the overclock option. You'll do that speed with a minor bump in voltage, especially since you're not using the stock cooler (let me put it into perspective, most q6600 g0s can do 3ghz on stock volts on the stock cooler). I guess you're system...maybe 400 watts tops? If you push the gfx with more volts and push the cpu harder, maybe top out at 500, but really doubt that. That corsair one will do good for you.

Edit: Oh and those are probably high (as in its actually lower) guesses btw.

my machine is similar spec to yours,kinda.My psu is a 430watt seasonic and its been a trooper.not a hitch,even benching my chip at 4ghz.

kwchang007 I increased the volts to 1.35 as I am new to clocking, It was a just a guess. Anyways thanks for the help guys. I'll get that corsair.

My standard Power Supply answer;

Some things to keep in mind;
Electronics are not "IDEAL". IF you get a PSU with the exact wattage you "need" then you will probably end up having to replace more than just the PSU.
PSU's are the heart of your system, if your heart is always beating as fast as possable (to keep up with the demand) it won't last very long. The harder the PSU works the more heat it generates. A PSU that supplies more power than you need works less hard and last longer.
When Buying a NEW PSU, get the BEST, QUALITY PSU you can afford with MORE power than you "need". This allows room for future upgrades, and will give you better overclocks, smoother operation, and the PSU will last longer because it's not working so hard to supply the draw of your system.

:toast:

your logic is sound in one way but flawed in another.. it tends to push folks to all thinking they need 1000 watts when 550 is plenty..

overkill works but aint that efficient..

trog

Corsair HX 520W right now with the mail in rebate its a $100 it used to be $140 its definately one of teh best power supplies in its class so if you want something that will not crap out on you i highly recomend this one for the price- also as trog said overkill isnt nesscery a quality 550w will last you a lot longer than a cheap 1000w anyday

the 550/650's (and i think the higher ones too) are built by CWT, only the 520/620's are seasonic

PC Power & Cooling 610
 

I bought this when Newegg dropped the price to 109.00US.

This is not modular, but is very capable offering 49A on the 12V rail.

http://www.newegg.com/product/produc...82E16817703005

Note that PCP&C units are all tested individually. You will find the test sheet in the box.

Note these units are completely silent thanks to a housing that is about 25.4mm longer than the standard PSU case. This may be an issue in a smaller case.

Regards,
jtleon

Yes, I agree that 95% of computers don't need a 1000 watt PSU, however;
Remember, a power supply that is rated at 1000 watts will not use or produce any more wattage than the computer draws. Therefore, the only "loss" is the money spent on the PSU, not the cost of electricity. If you are running a 1000 watt PSU on a rig that needs 400watts that PSU will run for a long time with few stability issues.

:toast:

Well there is the efficiency factor....

Could use this under $90 and will support your setup, may limit your overclock though if you plan on massive overclocking.

http://www.newegg.com/Product/Produc...82E16817139003

True, and the better (higher watt) psu's usually have a higher effiency factor than those below 400 watts.

:toast:

not always true namslas, efficency is just based on the components and usage of the psu.

Effiency is rated with the PSU attatched to a high load draw test system, See any of W1zards PSU reviews.

:toast:

by efficiency i did mean bank balance or effective use of resources efficiency not just the units electrical properties .

in essence what u are saying is spend twice as much as u need to all based on a mistaken premise that all power supplies are crap and their claimed wattage cant be trusted..

do u apply this spend twice as much principle to everything u buy.. or is it just power supplies u dont trust..??

trog

No, thats not what I'm saying....Read it again...LOL. I,m saying skimping is worse than overkill.

:toast:

Im running a Silverstone 800 Watt single 12 volt rail and it is more than i should need unless i wat to up to a newer set of gfx cards.

But i agree don't go too high, For example, when i did the build out for my rig i got 760.

I love those completely useless watts calculators...

You could run your machine perfectly fine in the perfect efficiency level on a decent 500 watt, say a Corsair 520, would be perfect.

I went to an 800 watt, because at the time i wasn't sure if i wanted to go with a pair of GT's or GTX's or ultras, and i figured an 800 watt psu should cover me pertty well.