Our load tests utilize a couple of FAST ATE active load testers and a variety of other equipment such as an oscilloscope, power conditioner, temperature probe and a power consumption meter. You can read more about our standard testing approach here.
The tests performed are based around six conceivable setups that are out there and progressively load down the PSU up to the power supply's limits or 1000W, whichever comes first. Since our test equipment's limits are lower than that of the Enermax Platimax 1350W power supply, we can test only test it to 1000W. Also, our test equipment is only capable of testing four rails at a time. As such, 12V3 will represent the combined output of 12V3 and 12V5 while 12V4 will represent the combined output of 12V4 and 12V6.
The above tests represent typical loads that we have measured from various systems and are meant to give a rough idea of where your computer might fall in line with our tests. Please keep in mind that each system is different and actual loads can vary greatly even with similar hardware.
Let's start by taking a look at the voltages to see how well this unit did during testing. Starting with the 12V rails, we see 2% regulation from start to finish across the board. The combined outputs of 12V3 and 12V5 faired the best with a total voltage drop of .19V, while 12V2 showed the largest drop in voltage which was .22V. The 5V rail managed to stay within 2% of specification with a total drop of .05V from start to finish. Moving towards the 3.3V rail, we see that regulation was within 2% of specification with a total voltage drop of .05V.
DC Output quality for the Enermax Platimax 1350W was great and well within specifications. During Test 1, we saw 8mV of noise on our scope. When we increased the loads in Test 3, the ripple climbed to 14mV at around half load. During Test 6 under a load of 1000W, the oscilloscope showed a maximum of 19mV on noise on the 12V rail.
The Enermax Platimax 1350W is rated for 80 PLUS Platinum efficiency. This means that the power supply must perform at 82%/85%/82% efficiency at 20%/50%/100% loads respectively. As you can see, the Enermax Platimax 1350W passed on our bench, and wasn't close to failing at any point.
I hate to say it, but the market for 1200W+ power supplies is starting to get a little bit crowded. The great thing about it is that very few of the power supplies above 1200W feature the same thing. For example, the Corsair AX1200i and SilverStone Zeus 1350W are both great units that offer entirely different features. What there is few of are 1200W+ units that simply just work. The Platimax 1350W power supply is just that.
There aren't any dials to change voltages, switches to change rails to configure, or software to install to monitor and control your power supply. It is simply a unit build with quality inside and out that you just plug in and go. It is the no fuss high wattage power supply for guys who have high-end rigs and don't have time to mess around. It is the unit that just works and keeps you happy, without you even knowing it is there.
As far as performance is concerned, the Platimax 1350W does well too. Voltage regulation is solid with 2% regulation across the board and consistent voltages across all 12V rails. The DC output quality is excellent and you can't really ask more out of such a unit. Platinum efficiency at 1300W+ is something that we've only seen out of just a few units to date.
What this all boils down to is that the Enermax Platimax 1350W power supply is great unit in just about every way imaginable. If you're running a triple or quad GPU computer and you want to mess with your power supply to get everything absolutely perfect, feel free to look elsewhere. I'd much rather prefer the Platimax as I can plug it in and start tearing it up in BF3 without any issues at all.
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