Power Supply Roundup: Part II

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bf2gameplaya

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I use the Enermax Modu82+ 625W version (same design) and I can attest the 12v rails are rock solid, they just don't sag or dip under any load.

The fan is interesting, I am used to the variable control knob but I do not miss it as the fan is silent under all but the heaviest sustained load and then it is audible, but not loud. It is a 120MM fan (quieter) but it is clear (louder). The fans' RPM monitoring lead is a must for my system board monitoring program as I could adjust other fans and settings based on the PSU fan RPM if I wanted, but as I run a near silent system, I have no need.

I wish it was $50 cheaper, but you get your money's worth, no mistaking that.

 
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will the hx520 can hold uo with a 4870X2 or 280GTX with a high end overclocked pc?
 

mafj

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Hi,
I sill miss some bits.
I would like to see how overcurrent and overheat protection works, whether mains spikes can damage the power supply.
Whether joining +5V with +12V rail (as may happen when e.g. CDROM fails) will burn the other components.
And noise/heat level.
 

bobbknight

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Yep just about as informative as the first part, IE. not very.
Unless you put the thing under load and oscilloscope the outputs for ripple and open it up to see the type of parts used and the construction quality. reviews of this type are next to meaningless.
 

jeffunit

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"But there is no 82Plus standard."

Clearly these folks don't know about the different colors of the 80+
program. The enermax is rated at the bronze level which must be 82% efficient. There is also the silver and gold level rating.

google is your friend.
 

jeffunit

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"For what it’s worth, that’s good enough to qualify the supply for the 80Plus Bronze certification, if Enermax pursued it."

Not only did enermax pursue it, but if you go to 80plus.org, you will
see that they are already certified at the bronze level. (80plus.org is
down right now, or I would provide a url showing it.)
 

jeffunit

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If you go to enermax's site, http://www.enermaxusa.com/catalog/index.php?cPath=21_56
they have a big honking picture of the 80+ bronze certificate and the 6 power supplies it applies to. I fear tomshardware has not done their homework.

Other than owning a 5 year old Enermax, I have nothing to do with the
company. I have 5 antec earthwatts powersupplies, and a seasonic power supply in my 80+ collection.
 

jeffunit

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Listing "Confusing “82+” specification in the product name" as a negative, clearly shows where the confusion lies, and it isn't with enermax.

The 80+ standard is several years old. The newer colored standards of bronze, silver, and gold are newer, but that is the wonder of technology.
For a technology web site, keeping up with newer things such as standards is necessary.
 

hellwig

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I never understood the intelligence of a fan-control knob for the power supply. Say you're typing up a report, not a lot of power is needed, both your CPU and GPU are throttled down. The power supply fan noise is annoying, so you turn down the fan. Once done with the report, you decide to treat yourself to an 8-hour gaming session maxing out both your CPU and GPU. You forget to turn-up the fan, wouldn't this burn-out the PSU?

I also partially agree with bobbknight in that reliability is an over-looked factor here. I know Tom's probably can't open-up a review sample to look at the parts, nor run these 24/7 for 6months to give an indication to their reliability, but a stable 12V won't mean much if the fan dies or a capacitor blows. Ripple on the DC lines is less of a concern to me. I'm sure my computer components can handle it, considering how much deviance is allowed in the specification. A 10mv ripple won't mean much if the voltage is already 10mv off base.
 

bounty

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You guys should take price into consideration. I didn't see any chart showing price. As far as I could tell these were all $100+ supplies. I think you used a 60$ power supply in your budget gamming rig. I know this is an enthusiast site, but there are more average people than rich people, especially right now. I'd like to see a bang for buck power supply shootout. Is there a sub $100 power supply that can handle a midrange SLI setup? Maybe dual 8800GT's or something... maybe start low and see at which point things start crashing... can it ramp up to OC'd with 260's or?
 

dealcorn

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With the emergence of Atom, a roundup of power supplies rated between 50 and 120 watts would be interesting to increasing numbers of readers. The 945G chipset is an energy pig (well over 30 watts). In due course, some SCH chipset such as the US15W will be available and the chipset draws under 3 watts. I think that will make the article's "low power" setting more like maximum load and the system will idle around 10 watts.
 

antiacid

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no noise comparision charts, no heat comparison charts, no discussion of the different types of protections...
This article is lacking a bit in depth :(
 

polaris408

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I'm glad Tom's is still reviewing PSU's, but why don't they review any Seasonics? I remember a long time ago, they put 50 or so PSU's at max load for 24 hours and all of them failed except the Seasonic and the bargain bin PSU. I'd like to see that test again on these guys.
 

ianucci

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I'm pretty confused about PSUs but I know the one I have currently is crap! Would the Hiper be good to use with a Nvidia GT260 gpu?
 

troll

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Like the first commenter said, I'm very surprised that the Antec NeoPower series isn't in here. I have a 550w model and it runs my Q6600 and 2x 9600GT's in SLI without a hiccup.
 

bf2gameplaya

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[citation][nom]hellwig[/nom]I never understood the intelligence of a fan-control knob for the power supply. Say you're typing up a report, not a lot of power is needed, both your CPU and GPU are throttled down. The power supply fan noise is annoying, so you turn down the fan. Once done with the report, you decide to treat yourself to an 8-hour gaming session maxing out both your CPU and GPU. You forget to turn-up the fan, wouldn't this burn-out the PSU?[/citation]

No it would not, as the internal temperature of the PSU overrides any user setting of the external fan speed knob.

The better unasked question is: Why would you keep the external knob at any setting other than the lowest, knowing that if the temp rises in the PSU, it will increase fan speed? One answer is that you might wish to keep the temps stable and not have to engage a faster speed than what is required. There are other reasons.
 

CroSsFiRe20

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My first post! lol
as for the comment about seasonic, i think the corsair is a rebranded seasonic, and for under $100 power supplies, i'd say a corsair 450vx is a good choice, have one of them myself and its dead quiet with a single 33A 12v rail
 

dreamkiller323

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I have the Corsair 520HX's bigger brother the 620HX, I run that with a Q6600 over clocked to 3.2GHz, two highly overclocked 8800GTS 640's (675/1000/1620 core mem shader), 3 HDDs, 4 sticks of DDR2 and the voltages didn't even budge - while being silent! Corsair's 620HX is probably the best power supply I've had.
 

unclefester

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Nothing said about PC Power&Cooling's variable fan speed,49amp single rail, or the fact that it's the only ps tested to blow air out the back not down onto your motherboard cpuor up to your grapics card(s) PS:Quietest fan in my case (Zalman 9700-1400 rpms/3 Antecs 1x120 2x80 all turning 1100 rpms 67 bones at the egg
 
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