SilverStone Strider 1500w

9.9 Overall Score

The tests were performed with XCPU’s SunMoon SM-5500ATE PC test load. This complex and rather expensive piece of equipment is designed and built to stress and test computer power supplies. As such, it is the ideal tool for doing load testing. Coupled with a low-bandwidth PC based oscilloscope, the setup makes for very easy and accurate power supply testing.

Testing consists of four main tests, and two crossload tests. The four main tests are meant to simulate a normal computing environment, where each test is an increment of 25% of the power supplies’ rated capacity. (25%, 50%, 75%, 100%) The two crossload tests are meant to test the ability of the power supply to operate in uncommon situations. The first test draws a lot from the 3.3v and 5v rails, while pulling a miniscule 1A from the 12v rail. The other crossload test is a large load on the 12v rail, and only 1A on both 3.3v and 5v rails. Older systems (Pentium II/III) use a lot of 3.3v and 5v power, and modern systems use a lot of 12v power, so these crossload tests help to demonstrate that the PSU can handle anything thrown at it.

The temperature in the room was kept at a constant 70F (21C) during the tests.

First, let’s take a look a the specifications for the PSU as shown by SilverStone:

The SilverStone Strider 1500w has 8 12v rails, each of which can output 25A. Combined, the unit can output 110A on the 12v rails. Both the 3.3v and 5v rails are rated at 40A, but the maximum load between the two is 280w.

Let’s see how she fares on the Sunmoon:

Voltage regulation is passable. The 12v regulation stays near 1.5% deviation, even while under very high load. The 5v also stays well within specifications. 3.3v is a bit less peachy, as it gets somewhat close to the minimum specification during Test 4. You can also see that this number is even lower in the CL2 test. Do not worry, because in this case, the CL2 test was actually drawing more power from the 3.3v and 5v rails than the rating suggests. (330.1w vs. the suggested 280w) Minus going slightly out of specification at that point, it seemed to work fine. Overall, pass.

 

Let’s move on to the ripple testing:

 

Test 1- 3.3v 5v 12v

 

Test 2- 3.3v 5v 12v

 

Test 3- 3.3v 5v 12v

 

Test 4- 3.3v 5v 12v

Test CL1- 3.3v 5v 12v

 

Test CL2- 3.3v 5v 12v

Actually quite impressive. During the low load tests, the ripple is very low. As we increase the load, we see a general trend of slightly increasing ripple. One point of concern: during Test 4, the 12v ripple is giving us a strange sawtooth waveform, which is less than desirable. You must, however, take into account that this test was conducted at 110A of total draw on the 12v rails, which is 100% of the rated load. Even at an absurd 1320w of draw on the 12v rails, ripple stays below 50mV. Quite impressive!

  • Note: Specification states that the maximum ripple on the 12v rails is 120mV, and the 3.3v and 5v rails is 50mV.

 

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