300W to 450W: 20 Power Supplies on the Test Bench
by Christoph Katzer on December 31, 2008 6:00 AM EST- Posted in
- Cases/Cooling/PSUs
HEC HEC-350TE-2WX 350W
HEC (or COMPUCASE) has been making power supplies and other products for quite a while now. We have to admit that we never liked anything from the company to date because we have seen mostly passive PFC topologies when active PFC was being utilized by the competition for some time. You can say HEC is conservative with everything they do, as the designs and limited number of retail products suggests. In fact, we always wanted to get retail models from HEC and we were promised them in the past, but they never arrived in our labs. This is why we also acquired this unit from friends rather than HEC itself. It comes in grey and sports two 12V rails with 14A each and a combined power of 276W. It is cooled by a 120mm fan.
Looking inside of this unit shows a similar heatsink design to what we saw in the FSP units. This time they look somewhat massive and at least have the slightest touch of fins. The lack of a large coil suggests active PFC, which makes this unit the first one we have seen from HEC without passive PFC. All the capacitors are made by Teapo and the fan comes from Young Lin Tech.
With HEC we have the same problem as we have seen with the OEM model of FSP. The cables are so short that we can't actually see them being usable in anything other than small Micro ATX chassis. The length of the 24-pin and 4-pin connectors of just 30cm is too short for anything else.
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Origo - Monday, January 12, 2009 - link
How can Silverstone Element ST40EF 400W get so good score on quietness and efficiency compared to Silverstone Element Plus ST50EF-Plus 500W?This (SPCR) review says Silverstone Element Plus ST50EF-Plus not that quiet or efficient:
[url]http://www.silentpcreview.com/article670-page1.htm...[/url]
7Enigma - Wednesday, January 7, 2009 - link
Could you comment on this PSU? I know you have a 500 and 550w article coming up but an incredible deal ($25 after rebate) came up on this PSU and I'll snatch it up for my build if it's good.Thanks.
Markstar - Wednesday, January 7, 2009 - link
As usual, thank you for your interesting review and the effort you surely put into it!Greetz from P3D!
yehuda - Sunday, January 4, 2009 - link
This is the kind of article I like to keep in my favorites and refer people to.Noya - Saturday, January 3, 2009 - link
I skimmed through, but I didn't see what type of set-ups you'd recommend for this class of PSU.So, I'll post what I'm using with a Corsair vx450:
Q8200 @ 3.3ghz (475x7)
8gb Ballistix DDR2-800 cas4 @ 475mhz (4x2gb)
Evga 9800gtx (stock clocked for now)
Gigabyte P-45 UD3P
3 x 7200rpm sata disks
2 x DVD/RW
3 x 120mm fans
It's been running fine for almost a month now (thanks MS for the 30% eBay cashback lol). I previously used this vx450 in my first build (s939 Opteron/7600gt).
OddJensen - Monday, January 5, 2009 - link
The VX450 is a pretty good PSU and under optimal conditions you can probably draw more than the max. rated wattage (450W @ 50C ambient). Though personally I like to go with a bit more headroom taking future upgrades into consideration.kenyee - Friday, January 2, 2009 - link
That's another way to group the power supplies.That's one reason I still use Enermax Liberty power supplies...they're a nice small size for HTPC's and the modular connectors are important when there isn't much space. Using this affects power efficiency which is probably why the highest efficiency ones don't use them...
proci - Thursday, January 1, 2009 - link
its a very nice test, i like it. i miss some words from the ripple side, they could be useful to those, who don't want to analyze so many graphs.i have an FSP 500 GLN60 (active pfc, smooth oemgrey color:D), i wanted a BS2, but the two seems to be identical to me (ok, it only has one 6pin connector). and i'm out of connectors (6molex, 4sata... with 7 HDDs/opticals, 2 fan controllers and only one video card). so having many connectors is a good thing, although you can buy molex duplicators (only downside is they cost money). and its still more than enough to power my system (q6600@3.0, hd3870, lots of vents, hdds...).
and most of the computers are fine with just 200-300W. its a shame, that there aren't that many good PSUs on the low edge, because having a monster of PSU means you will have bad efficiency in idle with most of the computers. ofc you can build a computer, which eats up 1000W, but besides skulltrail its hard, and mostly needs enthusiast end water cooling/compressor for cooling purposes.
and having a good PSU is like having good safety in your car: you only notice it when it fails, but then it is already too late. and buying a noname PSU means that you playing russian roulette all the time...
Martin84a - Thursday, January 1, 2009 - link
I find it weird people keep recommending Sea Sonic. I'm currently loojing for a new PSU in the 500-600watt range. I remember toms 24 hour PSU stress test, where Enermax, Zalman, Cooler Master and Silverstone where the last remaining, while Seasonic had failed with the rest.http://www.tomshardware.com/de/stresstest-netzteil...">http://www.tomshardware.com/de/stresste...etzteile...
I just read Hardocps Seasonic S12II-500 watt psu review, and the transient load test showed awful results.
http://hardocp.com/article.html?art=MTM2NCw3LCxoZW...">http://hardocp.com/article.html?art=MTM2NCw3LCxoZW...
Think computer showed a lot of undervoltage ripple too, and on the 12v a lot of switching between overvoltage and undervoltage. That doesnt look good.
http://www.thinkcomputers.org/index.php?x=reviews&...">http://www.thinkcomputers.org/index.php?x=reviews&...
And i have read about the DOA Seasonics too, and the ones failing after some time...
Seasonic also only provide 3 years of limited warrenty here like many other places, while a brand like Cooler master give 5 years, just like Corsair.
Just makes you wonder.
I think i'll go with an Enermax modu+ or pro+ this time..still not sure though.
sprockkets - Sunday, January 4, 2009 - link
Hmmm... your first link is to the german side of Tom's, and while we can make out perhaps the SeaSonic PS failed, searching the English side for the same article does not yield a proper counterpart, and the article that comes close to it, is not even finished and broken. What does that say about Tom's Hardware?Your second link does show some iffy parts, but overall, they recommend the power supply and dismiss the transient load results as not important. Btw, you think a computer motherboard is going to fry because the 12v line varies 0.2v? 4.92 volts is bad? Those voltages can vary 10% on the 12v line and 5% on the others and meet Intel's ATX spec. Welcome to the real world of imperfection.
Three years vs 5 years, so what? My FSP power supply in the thrid computer I've built in 2001 still runs fine, and it came with only a 1 year distributor warranty. In fact, only 1 out of 10+ FSP power supplies died, and it probably died because the power strip blew.