Introduction and Features

LEPA continues to expand their PSU offerings with three new 80 Plus Gold rated units; the G-650W, G-750W and G-850W.

LEPA is a relatively new player in the PC power supply market and they continue to expand their power supply offerings with the introduction of a second generation Gold Series 650W, 750W, and 850W PSUs.  LEPA also offers five other power supplies in the original G Series ranging from 500W all the way up to 1600W! We will be taking a detailed look at LEPA’s new Gold Series 750W PSU in this review.

Up until now, the LEPA name has traditionally been considered a house-brand for Enermax but the new LEPA Gold Series is manufactured by Channel Well and not Enermax – interesting. ECOMASTER is the authorized US agent for both Enermax and LEPA brand products.

LEPA Gold 750W Power Supply Key Features:

• 750 watt continuous power output (up to 40°C)
• 80Plus Gold certified to deliver up to 92% efficiency
• Low load, Fanless Mode (=15% load)
• DC-to-DC converter design ensures system reliability
• Double Forward circuit design provides high efficiency
• High efficiency 5VSB circuit helps meet EU ErP Lot 6 (2013) standards
• Solid state capacitors and all Japanese-made capacitors for reliability
• 140mm dual-ball bearing fan with thermal programmed speed control
• Hybrid modular cabling with flat, ribbon-style modular cables
• Powerful single +12V rail (62A) offers great compatibility
• Active PFC (up to 0.99)
• Universal AC input (100-240 VAC) full range
• OP, OV, OT, SC and Brown-out protection
• ATX12V and EPS12V version compliant

PSU Testing Methodology

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, real-world 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
• Efficiency
• Differential Temperature
• Noise

The LEPA Gold 750W power supply was 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)

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