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 less than that of the Seasonic X-1050, we can only test it to 1000W.
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 1% regulation from start to finish with a total drop of .09V throughout all the tests. The 5V rail also stayed within 1% voltage regulation and a total drop of .05V. Moving towards the 3.3V rail, we see that regulation stays at 1% with a total voltage drop of .04V.
DC output quality was good from start to finish. Starting out, we were barely able to see a ripple on the scope during Test 1 where we measured noise at a low 9mV peak to peak. This steadily increased as the loads also increased. By the time we had reached around 50% load, the unit ripple had crept up to 17mV. Under full load, we saw that the noise on the 12V rail had crept up to 27mV.
The Seasonic X-1050 is rated for 80Plus Gold efficiency. This means that the power supply must perform at 87%/90%/87% efficiency at 20%/50%/100% loads respectively. As you can see, Seasonic X-1050 managed to score a pass while on our test bench. At no time was the unit close to failing for efficiency.
Seasonic has once again proven why it is often the choice of enthusiasts. The X-1050 performed nearly flawlessly on our test bench through all of our tests. The voltage regulation is at 1% or less across all three rails which is almost unheard of and rarely seen. DC output quality was almost amazing, staying under 30mV of ripple under full load. Topping it off, the unit excels past the minimum for 80Plus Gold certification.
Performance aside, the Seasonic X-1050 has the rest of the package as well. The full modular design coupled with short and long cables ensure that you only have the cables you need in your system. Seasonic backs the unit with a five year warranty and when you add in the price of the unit, it becomes a no-brainer. The X-1050 gives you a win-win no matter how you look at it.
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- Page 1 [Introduction and Specifications, Availability and Pricing]
- Page 2 [The Packaging]
- Page 3 [Inside the Box]
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