Test Setup, Hold-Up Time, And Inrush Current
| Test Hardware | |
|---|---|
| AC Source | Chroma Programmable AC Source 6530 |
| Power Meter | Yokogawa WT210 Digital Power Meter |
| Loads | 4 x 600 W Chroma 63306 for 12 V testing 4 x 300 W Chroma 63303 for 5 and 3.3 V testing using Chroma HighSpeed- DC Load Mainframes 6334 |
| Oscilloscope | Tektronix DPO3034 Digital Phosphore Oscilloscope (300 MHz) |
| Test Procedure | |
| Voltages | 110 and 230 V |
| Standby Power | 0.25 A fixed current to simulate PC standby power on 5 Vsb |
| 80 PLUS Efficiency Testing | 100/50/20% load, relative to specified total output Load distribution across 12/5/3.3V rails at the same proportion as specified for 100% testing at 110 V according to ATX 2.3 specification |
| Efficiency at Fixed Loads | 25, 50, 85, 300, 500 W loads Load distribution across 12/5/3.3 V rails at the same proportion as specified for 100% |
| Peak Load Test | 110% Overload Testing at maximum combined 12 V |
| Temperature Test | Air intake vs. exhaust temperature delta tracking highest delta during all tests |
Please refer to our Desktop Power Supply Charts to see more results of these and other power supplies.
Hold-Up Time and Inrush Current
For what it's worth, we were unable to get usable readings from Antec's power supply during our Inrush Current test.
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Comments
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All about Power Supplies
Oooooooooooooooh very nice! I love when more sites than just Jonnyguru do quality PSU reviews - I know they're a ton of work so kudos for breaking out that oscilloscope and bringing us the info!
I still generally think that the price premium for Platinum over Gold PSUs isn't worth it, though - particularly on lower wattage units like these.
Either the Rosewill FORTRESS was defective or your calibration was off for the last test. Your o-scope shots do not match those of other highly credible reviewers. Also, I'm curious of your testing methodology, but it was not listed.
what? no overload it until it blows test?
and i was making popcorn.
Is that a typo in the first chart for Kingwin's Lazer? It claims that it fails 80 Plus's 50% load spec (82% of 92%); I assume that was meant to say 92% (since that's what the chart below it shows).
Pleasant read, though, I like PSU reviews.
What happen to Seasonic? They have the 520W fanless SS-520FL Platinum version. No PSU test is complete without a seasonic to compare to, in my own opinion.
What happen to Seasonic? They have the 520W fanless SS-520FL Platinum version. No PSU test is complete without a seasonic to compare to, in my own opinion.
they asked for vendors for the PSUs. Theres the offshoot chance that seasonic declined the offer. On other sites, the 520w fanless seasonic unit was compared to Rosewill's 500w silent night unit. The seasonic unit I believe in that review barely edged out a victory.
Either the Rosewill FORTRESS was defective or your calibration was off for the last test. Your o-scope shots do not match those of other highly credible reviewers. Also, I'm curious of your testing methodology, but it was not listed.
I believe this is still applicable to all of the power supply testing our German team does: http://www.tomshardware.com/review [...] 2657.html. I'm waiting for confirmation that I'm right.
Edit: Yup, that's the correct testing equipment/procedure!
Dun dun dun..................... no acoustic performance measured, the only reason some people buy high end PSU's.
WOW! Thanks a bunch for including the 25watt "Low-Power PC" efficiency test! All other reviewers stop @ 20% load witch is not "idle" or "low load" at all. :-)
Power supply unit is where a system builder cannot use a word "BUDGET"
I don't understand
Why is the 80 plus spec officially test by having more load on the 3.3v and 5v rails?
Clearly loading the 12v rail would give us a better overall image
no internal build break down? i don't think jonny guru and hardwaresecrets have anything to worry about in competition.
Interesting, IMHO the most important aspect is 'Ripple Voltage' @ Rated Load. The only mention I see is a vague reference in your conclusion page.
Never mind I see the ripple data buried in the individual tests. It would have been better in the summary side-by-side tests.
Nice article.
I believe this is still applicable to all of the power supply testing our German team does: http://www.tomshardware.com/review [...] 2657.html. I'm waiting for confirmation that I'm right.Edit: Yup, that's the correct testing equipment/procedure!
Sorry!
The page you requested couldn't be found
Power supply unit is where a system builder cannot use a word "BUDGET" "CHEAP"
fix'd that for ya
Sometimes in reviews like these there've been products that produce disappointing results compared to well known manufacturers. So why do they send their stuff in the first place knowing that their product is of lower quality than the competition. Do they gain something from these reviews? Just curious.
By reading this article, i just thought of a great idea and help for us users, a Best PSU for your money guide, i think that would be incredibly helpful since PSUs are hard to buy and to know wich ones are really good, of course i know that is a lot of work, but it could be like once or twice a year and not monthly like Video Cards and CPUs, what do you think about it?
I guess these psu's are only for bragging rights. For 120, you can get good 700-800w psu
Sorry!The page you requested couldn't be found
Sorry, take the period out of the end of the URL.