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Four 80 PLUS Gold Power Supplies Under 450 W, Reviewed

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they did ripple tests......they load tested them....... that's about as much as most readers need to know, that it wont blow up at 100% load and wont damage components with excess ripple. better than some reviews i have read "we hooked it up to a pc and it worked, give gold award..."
 
Ripple and line noise tests are the indicators of whether or not a power supply is made with solid parts or made with parts that just do the job and will probably last about a year of nominal use before releasing the magic smoke. If there's a lot of ripple, then the motherboard's house keeping circuitry is going to do a lot of work to keep stable voltages (especially when a difference of even 0.1V matters).

Yes, these are supposedly made by top-tier manufacturers, but just because they have a reputation in the past doesn't mean they have a clean slate the entire way through.
 
I am just happy that we have some reviews of more reasonable P/S. Most people I know aren't running 1000W+.

"In order to keep prices within reason, we settled on an 80 PLUS Gold rating as sufficient to meet our second demand."

I'm also happy with my 80+ Bronze P/S. Frankly, when you're buying smaller output P/S, I really don't know why anyone would need to get a Gold-rated one.
 
Yea I am really confused by the huge price tags here.

I paid like 70$ for a top of the line 660W seasonic platinum PSU after MIR. Needless to say I was patient and waited for a good deal, but I see high quality 650-750W PSUs for 80$ after MIRs regularly.
 


True, PSUs typically operate most effeciently at 80% load. I build gaming rigs though, so 400W is always too small.

I just expected smaller PSUs to be cheaper, that's all.
 
There's a big mistake in considering 400W insufficient for gaming. I have a 770 phantom, a 750ti from kfa2 for physx, an i7 2600K at 4,4ghz, various neons, a load of fans, 4 SSDs, 2 black faex 2TB, an asus xonar d2x, and still I can't reach over 420W of power consumption in torture tests, measured with the highest end APC Smart (865W UPS). I have a Corsair 850W Gold, which is a Seasonic rebrand. And I'm ashamed I went so much overkill with my PSU.
This review feels like useless. There's no ripple testing, whatever the second comment user says. Get some review from Guru3D and you'll see.
Based on words I can't compare with other products on other reviews, so this is quite a fail.
 


Haha... well I can beat you on your own games from my cell phone.
Click to expand...
Hahahaha yup, given a micro HDMI port. But I'm speaking of a machine capable of challenging the PS4. My old NES 8 bit is going to be revived with the KFA2 750Ti and an i5S processor. Actually I badly wanted the Broadwell architecture but I can't wait 2015...
 
I used an i5-3570K and an overclocked HD7970 to mine last year, and it pulled 312W from its UPS. Under a gaming load, the GPU usage would drop, and the CPU usage would be higher, but I'd be surprised if it needed more than 350W-375W. It happened to have a pair of WD Blacks in a RAID1 also, plus a SSD, but no other bling. A 400W PSU is plenty for a competent gamer.
 
This is not a Power Supply Review, this is an informercial.

The three most important things to review on a power supply are regulation, ripple suppression, and hot box stability.

My suggestion for Patrick is to go look at CRMARIS and Oklahoma Wolf's PSU reviews to see how a real review is done.

The only way to verify true quality is with hot box torture. That's how you separate the elite PSUs from the turds wrapped in a box.

 


Unless they buy it for the rating and know nothing else about a PSU, but if you checked out the price links to Amazon, no one is that dumb to spend that much on a small wattage PSU. The CM one is sold by some unknown vender with a $44 dollar shipping! Corsair has some reviews, but that's not for the 450w, they're reviews for higher wattage models.
 
Personally if a PSU is 500w or less a gold/bronze/silver rating means little to me as long as it's well made.
Unless it's over that, then personally, the cost of the unit out weighs the savings on the power bill
 

you can have a psu with crap components that has great ripple and noise tests and still explodes in 6 months. Visually looking at the inside is the only way to tell if it is mae with decent parts. A cheap capacitor can work just as well as an expensive one, but it wont likely last as long.
 
What about the Rosewill Capstone 450W? A cheap, reliable 80+ Gold power supply as well. $60 on newegg and amazon. Just got it days ago, and runs very well.
 


That would have crapped all over the other 4 PSUs and ruined the infomercial, pissed off the sponsors, and shut down THW.
 
While the tests aren't comprehensive they're pretty much proof positive that anything over 450W is overkill. I run a fairly heavy rig (1090T, 7950, 2 SSDs, 2 HDDs, BD-RW) on a decent 400W PSU and it doesn't have any issues. As long as the rails are sitting within specs under load they're fine, sadly Tom's doesn't seem to understand that voltage under load is important. And $90+ for a 450W PSU?
 
"Who the heck wants to spend that much on a 450w PSU? With that amount you can get a PSU with a lot more wattage and still have a 80 Plus Gold rating."

That 80 Plus Gold rating is a bit easier to meet at higher wattage ratings. The following table shows the maximum permitted power dissipation for an 80 Plus Gold rated power supply under low load. The first column is the power supply rating.

360 10.8
420 12.6
450 13.4
750 22.4
850 25.4

In order to achieve an 80 Plus Gold rating for the 360w rated SSR-360GP, Seasonic had to get power usage under 10.8 watts while delivering 72 watts of power output. In contrast, whoever built the Corsair HX750 only had to get the power usage down to 22.4 watts, albeit while delivering 150 watts of output power.
 
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