Page 4 - Minor Tests and Conclusion
Power supplies are interesting products, because often, reviews of products in this category are conducted and tested in methods that make it difficult to distinguish one power supply from another. Many aspects must be taken into consideration. Certain criteria consist of efficiency, noise, power ripples, and of course the ability to pull out the rated specifications. Because many cannot afford such equipment to obtain results regarding those aspects, articles covering power supplies often come out with less than adequate and acceptable information. As this is a product report -- not a review -- what we are doing is a close examination of the power supply and the internal hardware and build. But what we can do for you is do some minor testing with the results we can present to you with and let other review sites with professional equipment show you the actual test results. We are not going to try to create useless test results by installing the power supply into the latest gaming rig and try to take readings from that, as this is not even remotely the correct way to test power supply units. We understand that many websites do that as a means of load testing, but the results, even if you use an oscilloscope and multimeter at each output location, it is not sufficient, nor does it accurately reflect the performance of the power supply.
Using our portable power supply tester which exerts a minimal load on the power supply, the initial consumption was 5.1W as measured by our wall meter unit, indicating that the basic load-free power consumption of the power supply was very good. Independent reviews from websites with professional load testing equipment showed the Cooler Master V650 Gold V2 White Edition 650W delivered good efficiency, voltage regulation, and ripple. This is an 80 Plus Gold certified power supply unit.
Voltages with minimal load are generally accurate, which is a basic requirement of power supplies out of the box. In this situation, all are within 2%. The PG or Power Good delay is quite low being 80ms. A good delay will lay between 100ms to 500ms, so it is a bit of out ATX specification.
Active power correction is important to correct AC load line loss. In AC power, there are three components to it, as there is a phase difference between current and voltage. This makes up the power triangle, which consists of the following: Average usable power (P, measured in watts), reactive power (Q, denoted as VA-R), and total power (S, written as VA). While they all have the saved physical units, it is not the same thing as aforementioned. What we want is the average usable power with as little wasted reactive power as possible. The total power provided over the AC line is the magnitude of the two combined (sqrt(P^2+Q^2)). Power factor can then be easily calculated by P divided by S. The ideal value is 1.00, and this is where active PFC comes in. The Cooler Master V650 Gold V2 White Edition 650W has active PFC, and the power factor will approach 0.99 with a nominal load.
The Cooler Master V650 Gold V2 White Edition 650W is a decently quiet power supply. With regular loads under 15%, the fan will not engage when hybrid mode is activated. When the fan begins to ramp up, the power supply still remains quite quiet. On a scale from 0 to 10 where 0 is silent and 10 is an explosion, I would rate the V650 Gold V2 White Edition 650W a 2.0/10 under nominal loads because the fan spins quite slowly. When putting this power supply into actual use, it is more likely that you will hear your CPU cooler over any noise the V650 Gold V2 White Edition 650W may make.
Cooler Master provided this product to APH Networks for the purpose of evaluation.
I always like white color-themed PC builds because they simply just look cleaner. The Cooler Master V650 Gold V2 650W White Edition 650W is a white power supply with a great ten-year warranty and an 80 Plus Gold rating. Third-party review websites have shown the Cooler Master V650 Gold V2 White Edition 650W offers good efficiency, voltage regulation, and ripple control. This power supply comes with white cables out of the box, making a consistent white theme more achievable. The length of the cables is sufficient for most cases, being long enough, but not too long to the point it is difficult to cable manage. The noise produced by this unit is low, not to mention there is a fanless mode, as there will likely be other parts in your PC generating more noise compared to this power supply. At a price point of about $110 USD as of the release of this report, this is a decent option If you are looking to do a white PC build with a fully modular mid-range ATX power supply.
Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Outside
3. Physical Look - Inside
4. Minor Tests and Conclusion
