Testing
The following system was used to test the cooler:
– Processor: Intel i9 9900K @ 5GHz
– Motherboard: ASRock Z390 Phantom Gaming X
– RAM: Ballistix Tactical Tracer 16GB DDR4 @ 2666MHz
– GPU: MSI GeForce RTX 2070 Super Gaming X Trio
– SSD: Crucial MX 500GB
– HDD: WD 1 TB Blue
– CPU Cooler: CoolerMaster MasterLiquid 240 with NoiseBlocker eLoop B12-PS
– Display: AOC i2769VM
– Case: Phanteks Enthoo Luxe White
– OS: Windows 10 64-bit
The above system has a power consumption of approximately 502W when in full load and 68W when idle, in order to test the efficiency of the Power Supply, the power draw of the system was measured at the wall socket. Also, the voltages were measured on the +12v +5v and +3.3v using a multi-meter.
To load the system to its maximum the stability test of the AIDA64 Extreme 6.25.5400 was used with Intel Burn Test V2.
The Power Supply was tested with the system both idle and at maximum load.
Power Supply efficiency
For rail voltage tolerance levels, ATX (Power Supply Design Guide) specify that a 5% variable fluctuation is acceptable.
Voltage oscillation idle
Voltage oscillation load
The noise level was measured at three different distances from the fans (10cm, 20cm, 30cm.) the noise was measured with a margin of error of ± 5 db.
Final thoughts
The Supremo L2 Gold 650W is a good power supply, when looking at the overall package. The PCB layout allows for the air to move around the components, and thus increases the cooling. While the usage of a single heatsink is enough, two heatsinks would have been better, for keeping the temperature lower across the entire power supply.
The build quality is good, the case of the power supply has an evenly applied matte black paint. The cables are flexible and flat, making the wire management process easy.
The performance is good, the Supremo L2 Gold 650W reaching an average efficiency of 91.12%, which is within the efficiency Gold rating.
In terms of sound, the power supply is silent, with a noise peak at 38 decibels, measured at the standard 10 centimeters distance from the system. The 120mm fan has no bearing noise and is connected to the PCB using a 3 Pin connector.
In conclusion, the Supremo L2 Gold 650W is a good power supply, with a good performance and a 5-year warranty offered by the manufacturer. The average price of this unit is 75 EUR, which is OK for the most part, however, it could be lower, especially since better units are available within this price range.
The only inconvenient of this power supply is the lack of Over Current Protection, which is a feature that should be standard. In addition, the rather unique way in which the 24Pin cable is sleeved at the connector side, might not be for everyone.
