Introduction and Features
The 550/650 GS PSUs deliver quiet operation in a compact chassis
EVGA has just announced the arrival of two new GS power supplies in their popular SuperNOVA line, the 550GS and 650GS. Both power supplies are 80 Plus Gold certified and feature all modular cables, high-quality Japanese brand capacitors, and a super quiet 120mm cooling fan (with the ability to operate in silent, fan-less mode at low power levels). The 550GS and 650GS are housed in a compact chassis (150mm deep) and are backed by a 5-year warranty. These new GS units are manufactured by Seasonic and will start selling for $89.99 (550GS) and $99.99 (650GS) this spring.
EVGA was founded in 1999 with headquarters in Brea, California. They continue to specialize in producing NVIDIA based graphics adapters and Intel based motherboards and keep expanding their PC power supply product line, which currently includes twenty-two models ranging from the high-end 1,600W SuperNOVA T2 to the budget minded EVGA 400W power supply.
In this review we will be taking a detailed look at both the EVGA SuperNOVA 550GS and 650GS power supplies. It’s nice when we receive two slightly different units in the same product series to look for consistency during testing.
Here is what EVGA has to say about the new SuperNOVA GS Gold PSUs: “The EVGA GS power supply lineup has arrived. These power supplies offer superior performance, at extremely low noise levels making these the perfect power supplies for a low noise environment. These power supplies also feature ECO mode meaning that the fan will run only when necessary, further reducing noise level and power consumption.
The EVGA SuperNOVA 550GS/650GS power supply raises the bar with 550W/650W of continuous power delivery and 90% (115VAC) / 92% (220VAC-240VAC) efficiency. A fully modular design with compact dimensions reduces case clutter and 100% Japanese capacitors ensures that only the absolute best components are used. This gives you the best stability, reliability, overclockability and unparalleled control. The EVGA SuperNOVA 550GS/650GS is the ultimate tool to eliminate all system bottlenecks and achieve unrivaled performance."
EVGA SuperNOVA 550 GS and 650 GS Gold PSU Key Features:
• Fully modular cables to reduce clutter and improve airflow
• 80PLUS Gold certified, with up to 90% (115VAC) / 92% (240VAC) efficiency
• Tight voltage regulation (2%), stable power with low AC ripple and noise
• Highest quality Japanese brand capacitors ensure long-term reliability
• Quiet 120mm Teflon Nano-Steel bearing cooling fan
• ECO Intelligent Thermal Control allows silent, fan-less operation at low power
• NVIDIA SLI & AMD Crossfire Ready
• Compliance with ErP Lot 6 2013 Requirement
• Active Power Factor correction (0.99) with Universal AC input
• Complete Protections: OVP, UVP, OPP, and SCP
• Compact chassis only 150mm (5.9”) deep
• 5-Year warranty
Establishing an accurate load is critical to testing and evaluating a PC power supply. PCPerspective’s power supply test bench can place a precise DC load on the PSU under test. Each power supply is tested under controlled, demanding conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage. Our current suite of tests includes:
• DC Load Regulation
• AC Ripple and Noise
• Differential Temperature
The EVGA SuperNOVA 550 GS and 650 GS Gold power supplies were evaluated on both features and performance. A full range of equipment was used to test the power supply under controlled load conditions.
• (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)
• (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)
• (2) 200W Precision resistor load bank (+12V5 and +12V6)
• Switchable precision resistor load bank (-12V and +5VSB)
• Agilent 34401A digital multimeter (Accuracy ±0.0035% vDC)
• Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)
• DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)
• Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
• Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)
Do you know which Seasonic
Do you know which Seasonic platform EVGA is using? XP2S? Do they compare to the Corsair AX series (I think that’s the same platform, maybe not)? Are there any other supplies on the same platform for a compare/contrast?
These aren’t XP series.
These aren’t XP series. These are a derivitive of the G Series.
Why not use the latest Power
Why not use the latest Power Supply Design Guide for Desktop Platform Form Factors, Revision 1.31, April 2013 (http://cache-www.intel.com/cd/00/00/52/37/523796_523796.pdf)? It calls for ENERGY STAR compliance, which are tighter than the 2.2 standard you use.
Note in Table 15, for 100%, 50% and 20% loads:
REQUIRED Minimum Efficiency 70% 72% 65%
RECOMMENDED Minimum Efficiency 82% 85% 82%