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Old 12-31-2007, 12:09 AM   #1
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New PSU or keep the one I have?

Howdy, I just bought an Antec NSK-2480 case that included a 380w Antec Earthwatts PSU. I have read reviews stating this is a very good PSU, so I'm wondering if it has enough power for my setup...

What I am running is:

Core2Duo E4500
HIS Radeon X1650XT Turbo (AGP)
2 x 1GB DDR400 (PC3200) RAM
1 DVD/RW drive
Two SATA I HDD's
1 analog TV tuner
1 wireless adapter
2 x 120mm case fans

I have used this calculator (http://www.extreme.outervision.com/PSUEngine) and it shows that I'll likely use 334w with everything running pretty close to max. Even with an overclock to 3GHz, it says 363 (voltage bump of .05v).

This 380w PSU has 2 - 12v rails with 16A (IIRC) on each rail. The manual recommends a 450 PSU with 30A on the 12v rail. The manual also seems like it may be generic and I've read that other people are running a card like this or X1950 on similar power.

I haven't run it with all the components yet as I am waiting on my X1650XT to return from RMA. I swapped the fan in the PSU with a Scythe as the reviews said the stock fan could be better. I have tested it all and it works with the onboard video, but I am worried when I add the video card and if I decide to overclock.

Do you think I could get away with the PSU, or should I look at a different one?

The setup (minus the video card):

http://hosting.superhighoutput.com/y...C/img_7075.jpg

Last edited by yamahaSHO; 12-31-2007 at 11:43 AM.
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Old 12-31-2007, 09:49 AM   #2
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I read that the X1650XT uses almost 200w at load. A 380w might be pushing it. Look for other opinions other than mine though.
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Old 12-31-2007, 10:34 AM   #3
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Quote:
Originally Posted by Lespaul20
I read that the X1650XT uses almost 200w at load. A 380w might be pushing it. Look for other opinions other than mine though.
Everything I've read says about 55w a peak load for the X1650XT.

Last edited by yamahaSHO; 12-31-2007 at 10:36 AM.
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Old 12-31-2007, 10:46 AM   #4
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Yeah you are probably right. I didn't look very close at the charts I was using.

Wilt that in mind you probably will be fine. Here a different chart than what I was looking at that has total system watts.

http://techreport.com/articles.x/11131/9
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Old 12-31-2007, 11:38 AM   #5
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One thing to remember about those power supply calculator is that they figure out the power requirement based on everything running at max usage...you rarely ever do that. And the calculators also have to take into account all the rubbish power supplies out there that don't put out near what they claim to put out. A good quality power supply will put out the power it claims to (and in many cases more power than they claim to) so you may be okay with that 380 watt PSU when running your computer at stock speeds. For overclocking I wouldn't take a chance...I'd put a 450 - 500 watt PSU in there.

Also, please change your inline image to a link. Inline images are frowned on here because the staff is trying to nice to the dialup users. Thanks.

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