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 equal to that of the Fractal Design Newton R3 800W power supply, we can test it to the maximum.
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 rail, we see 2% regulation from start to finish with a total drop of .14V. The 5V rail managed to stay within 2% of specification with a total drop of .07V 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 .07V.
DC Output quality for the Fractal Design Newton R3 800W was okay and well within specifications. During Test 1, we saw 10mV of noise on our scope. When we increased the loads in Test 3, the ripple climbed to 24mV at around half load. During Test 5 under a load of 800W, the oscilloscope showed a maximum of 42mV on noise on the 12V rail.
The Fractal Design Newton R3 800W is rated for 80 PLUS Platinum efficiency. This means that the power supply must perform at 90%/92%/89% efficiency at 20%/50%/100% loads respectively. As you can see, the Newton R3 800W passed on our bench, and while it didn't fail the test, it was most certainly skirting the line at the 50% load mark.
I have to say that I had high hopes for the Newton R3 800W power supply and it delivered on most of them. The power supply looks great visually and on paper it is very promising, offering high efficiency with quality components throughout the entire unit.
I was quite let down though when I opened the power supply and found Teapo capacitors on the secondary side of the unit, when I was promised "100% high-end Japanese industrial capacitors for maximum reliability and longer life." The performance of the unit reflected the use of them too, with the DC output quality being higher than we'd like to have seen.
Aside from that, the Newton R3 delivers just about everywhere else. The unit has great cable selection and performs very well concerning voltage regulation, staying within 2% across the board. It also has a decent price for what it represents in both performance and features. While it may not be the best unit on the market, its price combined with its performance and efficiency make it a decent offering.