Power Supply Roundup: 730W to 900W
by Christoph Katzer on November 22, 2007 3:00 AM EST- Posted in
- Cases/Cooling/PSUs
Silverstone OP850 - 850W
We have seen already two other versions of this unit before in the 650W class. The 850W version doesn't differ too much, and from the outside it looks the same. On the inside, however, there are plenty of changes, including a new topology. The power supply comes in a black housing with a large 120mm fan.
As we have seen before the OP850 has just a single 12V rail which supports up to 70A.
Cables and Connectors
All the cables are sleeved as usual. The mesh starts outside of the power supply which is not as attractive. If a company pays for the additional costs of adding sleeves, they should do the job correctly and start the mesh inside the power supply chassis. Other than aesthetics, though, there's no disadvantage in this approach. The cable harnesses are very long and have a maximum length of 110cm for the floppy connectors and 100cm for the Molex connectors. There are six Molex and SATA connectors, which is enough though a few more wouldn't have hurt.
The inside is nicely arranged and makes a good impression. There are two large heatsinks that reach from front to back. The fins are thick and should provide ample cooling. However, our measurement of up to 90°C in the heat-chamber is quite high. With an exhaust temperature of just 58°C, it appears the airflow isn't removing heat from the heatsinks. Instead, heat builds up inside the housing, which is not the intended result. Still, the power supply did complete our tests and we couldn't find any major problems.
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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.