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Is this PSU good enough for my setup???

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July 30, 2010 5:55:27 PM

Hello everyone,

This will be my second time building a PC. The last one I built was a Pentium IV system 8 years ago, so I had a bit of catching-up to do on the hardware available today. Anyway, the purpose of the PC is both home theater and light 3D gaming, and it will be connected to my 46" 1080p Samsung LCD via HDMI. In the future, I may want to add an additional video card for Crossfire. Here is my system so far:

MSI 890GXM-G65 AM3 AMD 890GX Motherboard $129.99

AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Quad-Core CPU $179.99

ATI Radeon HD 5750 Video Card 1 GB $149.99

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory $99.99

Western Digital Caviar Black WD1002FAEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive $94.99

HEC Black 0.7mm Thickness SECC 7K09 Micro ATX Media Center / HTPC Case $54.99

Samsung SH-B083L/BSBP Blu-Ray Drive $69.99

I used Newegg's PSU calculator and got a recommended PSU rating of 470 watts. Because I am using a Micro-ATX form factor, that has limited the PSUs to a max of 550 watts. The only one I found rated at 550 watts was this one:

Athena Power AP-MP4ATX55FEP8 550W Micro ATX SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Is this power supply acceptable for my setup? Thanks for the help, guys!

More about : psu good setup

July 30, 2010 6:22:50 PM

You won't need 470W with a quality PSU, and you need a good brand power supply. If a bad psu goes, it can take other stuff with it, which you definitely do not want. It doesn't appear that there are any on Newegg for Micro-ATX PSUs.

I'd go with a different case, like this one, which seems well liked.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

That way you can put a regular ATX PSU in it and get a much better brand.

Something like one of these.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 30, 2010 7:27:37 PM

aebome said:
You won't need 470W with a quality PSU, and you need a good brand power supply. If a bad psu goes, it can take other stuff with it, which you definitely do not want. It doesn't appear that there are any on Newegg for Micro-ATX PSUs.

I'd go with a different case, like this one, which seems well liked.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

That way you can put a regular ATX PSU in it and get a much better brand.

Something like one of these.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Thanks for the reply. The reason I wanted to go with that particular case was it was pretty short (only about 4 inches) and it would fit nicely in my AV rack. However, I think in the long run I'd probably save myself a lot of headaches by going with a case that is a bit taller so squeezing in the components won't be as difficult, as well as fitting a larger, better-quality ATX PSU. Of those 4 PSUs, which would you recommend?
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July 30, 2010 7:48:34 PM

I think any of them would suit your needs well. The Corsair is extraordinarily well liked here in the Tom's Hardware forums, and is known to punch above its weight. The Antec NEO 400 is also excellent, and high a higher efficiency rating than the Corsair, while maintaining 30Amps on the 12V rail. I think for the money, these two are the best bang for the buck. Also depends on where you want your fan (back or bottom, the case can accommodate either).

Just to point it out, the Antecs do NOT come with a power cord, so if you don't have one, you'll need to order one of those as well. Not a deal breaker in my opinion.

If it helps, I built a computer this past march for my father, who has basic computer needs, and used the Corsair. I looked at the Antec NEO, but it was more expensive at the time and cost was a concern for him.
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July 30, 2010 7:54:38 PM

Also, just to comment on the rest of your build, I would look at the Samsung Spinpoint F3 1TB, as it is cheaper and faster than that WD.

Also switch your processor to the 955 BE, its exactly the same chip just with 1x multiplier less. Just go into the bios up the multiplier by 1 and viola, a 965BE at $20 savings.
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a c 274 ) Power supply
July 30, 2010 8:07:32 PM

You could actually do a few changes.
CPU-955 basically the same cpu x mutiplier by 1 = 965 speed/save $20
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
HDD
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Check out the e-mail promotions two different 5770's for $139.99
PSU-one of these if your're going to crossfire
http://www.newegg.com/Product/Productcompare.aspx?Submi...
Antec Neo 400w $30 e-mail promotion/or the $30 mir Corsair if only using single gpu
http://promotions.newegg.com/NEemail/latest/index-landi...
Case
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 30, 2010 8:56:29 PM

I think Davcon missed the point of the HTPC build with some of his suggestions (case/crossfiring), but his suggestion about getting at 5770 at the same or lower price than a 5750 is a good one.

I thought that the reason you had chosen a 5750 was because you needed a low profile card, but it doesn't appear that 5750s are available in a low profile version. If you don't need a low profile version of a GPU (you won't in that Silverstone case) grab one of the 5770s at the same price point. The PSUs discussed above can handle it.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a b ) Power supply
July 30, 2010 9:27:10 PM

There are online tools to help you size up your power supply. Most of the top brands of PSU provides this tool. Corsair, Antec, Coolermaster..etc provide such tools

http://www.corsair.com/highqualitypower/default.aspx

Antec PSU calculator

http://www.antec.outervision.com/

Cooler Master Power Calculator

http://www.coolermaster.outervision.com/index.jsp

These tools will allow you to determine the capacity (Watts) of your PSU.

The general recommendation is buy the known good brands such as Corsair, Antec, Seasonic, Enermax etc.

Site to that review PC PSU

http://www.jonnyguru.com/index.php
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July 31, 2010 1:50:50 AM

Thanks again for the input, guys...

Regarding the video card, I actually meant 5770, not 5750. I agree that the performance increase of the 5770 is more than enough to justify the price.

So, apparently not all Watts are created equal. 300 watts in one PSU is not necessarily 300 watts?
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a b ) Power supply
July 31, 2010 2:13:26 AM

You have to look at the specs of the PSU how the power is distributed to the different voltage rails
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a c 139 ) Power supply
July 31, 2010 2:27:58 AM

bigrig00 said:
So, apparently not all Watts are created equal. 300 watts in one PSU is not necessarily 300 watts?
Correct. Thats true of a PSU at any level. With a modern PC system you want as a hefty amount of +12v power for your CPU and video card.

COOLMAX CA-300 300W 180watts of +12v power

SeaSonic SS-300ES 300W 80Plus Bronze Efficiency 288watts of +12v power
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