Package Contents, Power Rating, and Fan

The contents in the package are very generous. Besides the so-called "CordGuard" that secures the power cord, users get some Enermax cable ties, an Enermax sticker, a user manual, and the modular cables in a separate bag. Features of the product include the 80 Plus Platinum certificate, a 5 year warranty, the improved resonant converter, and other technical refinements; we'll cover those in more detail later. There is also a "HeatGuard", which is nothing more than a temperature monitor that will continue to cool the PSU after you shut off the PC/PSU (if necessary).

According to the label the PSU has four +12V outputs rated at 25A each, which together can provide almost the entire power output (744W). Both +3.3V and +5V are specified at 24A. Those outputs can provide up to 120W, which is slightly lower than the values from most power supplies in this performance class but typically more than sufficient for modern PCs. The +5VSB at 3A is also relatively strong.

Enermax relies on its own high-quality Twister fan for cooling, with the model number EA142512W-OAB. This one has seven transparent fan blades and is based on Enermax's "Twister Bearing". The fan is rated at just 0.15A current, which is rather moderate. The fan runs at low speeds ranging from 300 to 1000RPM. Well, at least that applies to the fan in Platimax models below 1000W. Thanks to some patents, the fan has a 13.9cm diameter, but it's basically a 140mm fan.

Introducing the Enermax Platimax 750W External Impressions and Cable Configuration
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  • Galcobar - Saturday, February 11, 2012 - link

    Power supplies are like rims on cars -- we don't see the effect easily, but that doesn't mean it doesn't exist.

    Nobody's claiming a good PSU will make your system faster. It will make it cheaper to run, and last longer. A cheap PSU can and will kill your components with unstable current (that would be the ripple mentioned in the article) or out-of-spec current (running 4V into a 3.3V component). Then you have to pay to replace those components. A cheap PSU will also fail sooner, meaning you have to replace it, spending yet more money.

    As for quality rims, actually, those do make your car faster. A simple cast rim is weaker and will weigh significantly more than a forged rim. The high unsprung, rotating mass requires more energy to accelerate and maintain speed (and the effect is greater than an equivalent mass in the body of the car), meaning you lose performance and fuel economy. It also degrades handling for the same reason.

    Of course, lots of rims are purely cosmetic and have no performance value,and that holds true of some PSUs. Good quality costs money initially, but will either pay for itself or provide a measureable benefit. The point of a review such as this is to separate out the ones that just look good from the ones that actually do good.
    Reply
  • Sabresiberian - Sunday, February 12, 2012 - link

    Troll. Reply
  • faster - Saturday, February 11, 2012 - link

    With the move to SSD from mechanical drives and die shrinks from componenent manufacturers (CPU, video card, chipset, ect.) the power requirements of systems are going up not down right? Wrong! Power requirements of modern computers are going down.

    If power saupply manufacturers are going to impress me into spending $230, they should put a battery in their power supply that protects against brown outs, power outages, and power surges. Now that would be something worth $200+ dollars. Otherwise the Gold standard is literally, the Gold standard.
    Reply
  • Death666Angel - Saturday, February 11, 2012 - link

    That's what surge protection extension leads and UPS are for. Putting that in a PSU would just add size, cost a lot of people don't need and decrease durability since batteries don't life forever. Reply
  • Sabresiberian - Sunday, February 12, 2012 - link

    Why do people read a review of a 750W PSU and start bashing it because it is a 750W PSU? Is your self esteem really so low you can't stand it if someone has a different purpose or standard than you? (Notice I didn't say "better' standard.)

    Guess what bubba, not every product made in the world is intended to impress you.

    You are correct in saying the power requirements for the CPU and storage (SSD) are going down, but as far as video cards - you have no clue. An overclocked GTX 580 has been shown that it can pull as much as 300W. Just one. Yes, the power required for these things will go down too, eventually, but we aren't there yet and not everyone runs on-board graphics and uses smaller screens or are perfectly satisfied with low resolutions and frame rates.

    ;)
    Reply
  • Ph0b0s - Saturday, February 11, 2012 - link

    The disappointing thing with the latest bunch of Enermax PSU's, is the omission of a fan signal cable from the PSU. All the way up to the Revolution 85+ PSU's, Enermax used to have a signal cable from the Fan inside the PSU that you could connect to your motherboard and monitor the PSU fan speed. This was unique to Enermax. It is a very useful diagnostic tool, by which you could tell the fan was working properly or if the PSU was getting to hot due to the thermal design of your case.

    Now they no longer do this Enermax have lost some of their prestige to me. Would have been nice if this change had been mentioned in the review.
    Reply
  • MrSpadge - Saturday, February 11, 2012 - link

    These high efficiency PSUs could do for quite a while without the fan. Personally, that fan monitoring never really helped me.. but then my fans didn't fail either ;) Reply
  • MrSpadge - Saturday, February 11, 2012 - link

    .. please! Reply
  • MT SOL - Saturday, February 11, 2012 - link

    There is a typo in the second sentence of the first paragraph. I think you mean "turn-on" instead of "tun-on" :).

    As you can see, typos are a turn-on for me :).

    On a side note, it would be interesting if AnandTech crunched some numbers to show how much a 80+ Platinum PSU could save over other 80+ PSUs (Bronze, Gold, etc.). That would be of great practical value :D.
    Reply
  • cbag - Sunday, February 12, 2012 - link

    Its fairly easy to calculate. I crunched numbers based on an 80 Plus as the baseline. Assuming 750w power supplies, computer on 24 hours a day for 365 days @ 50% load. A 90 Plus Platinum PSU would save you $64.27 dollars @ 12 cents per KWH. And that is the savings over an 80 Plus!

    So it does add up and would be well worth it in a computer that you leave on overnight to crunch rendering or folding, etc.
    Reply

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