Power Supply Roundup: 730W to 900W
by Christoph Katzer on November 22, 2007 3:00 AM EST- Posted in
- Cases/Cooling/PSUs
Voltage Ripple and Noise
Amacrox
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Antec
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Cooler Master
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Hiper 730
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Hiper 880
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OCZ
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Seasonic
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Silverstone
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None of the units exhibit very high ripple noise, though we still see differences. Amacrox in particular generates a good results with just up to 30mV on the 5vsb rail and less than 10mV on all others. Unfortunately, we can't report results for the Hiper 770W unit since we took it apart for further inspection before we could perform the o-scope tests. The other three units performed quite well and the 730W version in particular delivers no more than 8mV on the various rails.
Antec shows minor problems on the 5Vsb rail as well since it goes slightly out of spec, but the other rails are within spec. The Cooler Master M850 is good on the 12V rails, though 12V2 and V3 are showing strangely high results of up to 80mV. OCZ also shows minor flaws on most of the rails where we see peaks up to 80mV at higher load. This might sound high but it's still within specs and not much to worry about. Seasonic could perform better, since the results for the X900 are not worthy of a high-end unit like this. Throughout the test the X900 generated ripple of up to 40mV on the 5V rail, and the 12V rails don't look much better. Finally, at maximum load the Silverstone OP850 shows 36mV on the single 12V rail and also high ripple on the lower 3.3V and 5V rails.
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31 Comments
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tynopik - Friday, November 23, 2007 - link
the efficiency charts are fantastic as you can see exactly how all the units compare at a specified wattagebut then you go back and do the acoustics charts by % load? why?
if i want to see how all the units compare at a 500w load, there's no easy way to do that as that might be a 68% load on one unit and a 55% load on another unit
Christoph Katzer - Friday, November 23, 2007 - link
Next time will doVidmar - Saturday, November 24, 2007 - link
Thanks for doing the charts in watts instead of load. I've been asking for that for some time. As has been said here it makes it much easier to find a good unit based upon a known wattage your system uses. Good article.tynopik - Friday, November 23, 2007 - link
great!and then once all units are tested to the same baseline, that opens the door for dynamic comparisons
as you build up a database of reviews, you could have a dynamic system where you can choose a 400-500 watt unit you reviewed 9 months ago and a 600 watt unit you just reviewed and it will generate the comparison charts on the fly
something for the future perhaps ;)
Etern205 - Thursday, November 22, 2007 - link
Newegg is selling the Antec TruePower Quattro 850 at $249 whilethe 1KW version is selling for $299 with a -$80 instant rebate!
850w version
http://www.newegg.com/Product/Product.aspx?Item=N8...">http://www.newegg.com/Product/Product.aspx?Item=N8...
1KW version
http://www.newegg.com/Product/Product.aspx?Item=N8...">http://www.newegg.com/Product/Product.aspx?Item=N8...
Traciatim - Thursday, November 22, 2007 - link
Could you please design and test with a machine that actually uses 700+ Watts of DC output?Jjoshua2 - Thursday, November 22, 2007 - link
I like the old review better. I don't have time to read the whole reviews, so I just read the conclusion and then go over a few interesting paragraphs. I hope you have a longer conclusion next time!Thanks.
Christoph Katzer - Friday, November 23, 2007 - link
Ehm there are 8 pages comparison/conclusion.... not enough?Of course people not appreciating the work and just read the last page find it boring... so next time I write a page about 10 PSUs and that'd be enough? ...
Googer - Thursday, November 22, 2007 - link
Check the hot deals section of Anandtech forums, a little while ago I posted a $50 price drop of the Silencer 750 down to a budgetable $150.
http://forums.anandtech.com/messageview.aspx?catid...">http://forums.anandtech.com/messageview...=40&...
Christoph Katzer - Friday, November 23, 2007 - link
That would be a really good deal indeed.