Introduction and Features

Corsair Professional Series power supplies are built using industrial grade components, ensuring the stable, clean and reliable voltages that are essential for high-end gaming PCs and workstations.

It’s always an exciting day when a new Corsair power supply shows up at the PCPerspective test lab and today we have a brand new HX1050 PSU to test out. Corsair continues to bring a full line of high quality power supplies, memory components, cases, cooling components, SSDs and accessories to market for the PC enthusiast and professional alike. Corsair’s Professional Series power supplies now include four models; the HX650, HX750, HX850 and HX1050. All of the power supplies in the Professional Series feature premium quality components, an energy-efficient design (80 Plus Silver certified) and quiet operation; and they are backed by a 7-year warranty and lifetime access to Corsair’s comprehensive technical support and customer service.

Here is what Corsair has to say about their Professional Series PSUs:
"Corsair Professional Series power supplies are designed for enthusiasts and gamers who demand high performance, high efficiency, the flexibility of modular cables, and unflinching reliability. Designed and engineered using cutting-edge technology, each Corsair Professional Series power supply is built to the highest quality standards and delivers the features and performance that technology enthusiasts demand.

Corsair Professional Series power supplies are built using Industrial Grade electrical components, ensuring the stable, clean and reliable voltages that are essential for high-end gaming PCs and workstations. Professional Series PSUs are rigorously tested at 100% load and an ambient temperature of 50°C, guaranteeing stability and reliability even in the most demanding multi-core, multi-graphics card systems.

The Corsair Professional Series HX1050 PSU utilizes advanced DC-to-DC circuitry, and exceeds the requirements for 80 Plus Silver certification standards, for up to 88% energy-efficiency. This reduces wasted energy, reducing energy bills, and lowers the amount of excess heat generated, allowing the cooling fan to spin more slowly and quietly.

Corsair Professional Series power supplies boast an innovative semi-modular cabling configuration that uses low-profile, flat modular cables, which reduce air friction to help maximize airflow through the computer chassis. The modular design also simplifies installation as it allows unprecedented flexibility in utilizing only those cables which are needed. Corsair Professional Series is backed by and industry-leading 7-year warranty and comprehensive customer support. "

Corsair HX1050 PSU Key Features:

• 1,050W continuous power output (50°C)
• Supports ATX12V v2.2 and EPS 2.91 standards
• 80 PLUS Silver certified (88% efficient under real-world loads)
• Single +12V rail design provides up to 87.5A
• Low noise 140mm double ball-bearing fan offers excellent airflow
• Advanced DC-to-DC converter circuitry
• Comprehensive hybrid modular cable system
• Universal AC input (90~264V) with Active PFC
• Over-current, over-voltage, under-voltage and short circuit protection
• Multi-GPU ready
• 7-Year warranty and lifetime access to legendary Corsair customer service
• Safety Approvals: UL, CUL, CE, CB, FCC Class B, TUV, CCC, C-tick

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 2,000 watt 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
• DC Line Regulation
• DC Cross-load (unbalanced load)
• AC Ripple and Noise
• Power Factor
• Efficiency
• Differential Temperature
• Noise

The Corsair Professional Series HX1050 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)
• Extech MultiMaster MM570 digital multimeter (Accuracy ±0.02%)
• 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)
• Custom PC60 enclosure to simulate real-world operating conditions


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