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Power Supply Requirement?

Last response: in Components
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April 1, 2009 4:31:36 PM

Hi all, I am building a system (boy it's been a long time since I built one) with the following components. What kind of power supply can I use that would work?

1. Q9550 Core Quad
2. Foxconn G45M-S LGA 775 Intel G45 HDMI (X4500HD graphic card on board)
3. LG Black 6X BD-ROM DVD RW
4. 4G DDR2
5. 1T Seagate Baracuda

This will be used primarily for HTPC purpose and not for gaming much. So can I get by with the following power supply?

APEVIA X-QPACK with 420W PSU
+3.3V - 31A
+5V - 29A
+12V1 - 14A
+12V2 - 16A
-12V - 0.8A
-5V - 0.3A
+5VSB - 2.0A

420W Max all across those outputs

a c 248 ) Power supply
April 1, 2009 5:57:13 PM

Yes, you can get by mainly because the system has very few components and you are going to use on-board graphics. Just don't expect much in the way of high performance.
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April 1, 2009 7:58:26 PM

Ok it's good to know that PSU would work without a dedicated GPU card. What if I want to add ATI Radeon HD 4830 later on? would I then have to move up? What would be the desired PSU wattage in that case?



a c 248 ) Power supply
April 1, 2009 9:37:52 PM

A single ATI Radeon HD 4830 video card uses about 100 watts and about 8 amps at load so you should be okay. It's not a very power hungry video card.
a c 144 ) Power supply
April 1, 2009 10:01:28 PM

Apevia PSU's really ... , well, let's just say that you can move golf balls through garden hoses with them.
April 1, 2009 11:10:30 PM

You guys are all giving some great advice to a noob here. I read somewhere that number of rails can make a difference. With my set up (including the future purchase, ATI Radeon HD 4830), am I better off going with single rail 12V or multiple rails? I am confused even after I read it. There doesn't seem to be a "set" way to tell which way to go... Specifically, I am looking to replace the stock 420W PSU with this one.

http://www.coolmaxusa.com/productDetailsPower.asp?item=...


April 1, 2009 11:17:38 PM

A 300 will be fine. With no graphics card you really could get by with about 250 but 300 would be better. Though if you are planning on adding a video card you need to get a bigger PSU to prepare your system.
April 1, 2009 11:18:14 PM

And Ultra and Thermaltake make the best PSU's.
April 1, 2009 11:20:28 PM

mamw93 said:
And Ultra and Thermaltake make the best PSU's.

Not really...

They aren't bad, but Corsair and PC Power and Cooling are better, for example. Seasonic is excellent too.
a c 248 ) Power supply
April 1, 2009 11:38:59 PM

+1 what cjl said

I read the Tom's Hardware "how to" article about building a HTPC and bookmarked it for future reference. The article recommended the Corsair VX450 power supply.
April 1, 2009 11:56:52 PM

JohnnyLucky said:
+1 what cjl said

I read the Tom's Hardware "how to" article about building a HTPC and bookmarked it for future reference. The article recommended the Corsair VX450 power supply.



Looks good except it's not mATX I am looking for. My case is Apevia X QPACK. So it's pretty small. Do you guys have something in mind that would work?
April 2, 2009 1:36:27 AM

None of those look very good though. IIRC, Seasonic makes some PSUs that fit microATX.
April 2, 2009 2:43:08 AM

cjl said:
None of those look very good though. IIRC, Seasonic makes some PSUs that fit microATX.



From what I can see their max Watt is around 300W. If I were to play 3D games in the future, wouldn't I need something bigger? I was looking at the recommended PSU for ATI Radeon HD 4830, it says 550W in crossfire, 450W single. I can probably get by with 420W in Apevia QPACK, but just want to address these issues before I jump in and buy it.

I just don't want any trouble that I have had in the past with a PSU that took my hard drives and everything else with it when it went.

That would be a big ouch.
April 2, 2009 7:43:51 PM

For an htpc you'll need a video card if you want any kind of good playback quality. I suggest the 9800 GT. Good for gaming and GREAT for Blu Ray.
!