Corsair AX860i Digital ATX Platinum Power Supply Review
Introduction and Features
As promised, Corsair recently added four new power supplies to their AX Series including two new digital models, the AX860i and AX760i. The AX860i and AX760i PSUs bring most of the great features of Corsair's flagship AX1200i Digital ATX PSU (DSP control, Platinum efficiency, all-modular cables, and 7-year warranty) to PC gamers and enthusiasts who don't need a 1200W PSU and are looking in the range of 760 and 860 watts. Both the AX860i and AX760i incorporate Digital Signal Processing to deliver extremely tight voltage regulation, clean and efficient power with the ability to make real-time adjustments to various internal parameters. The included Corsair Link software can be used to monitor and adjust performance, noise (fan speed), and Over Current Protection (OCP) settings. The Corsair AX860i and AX760i Digital ATX power supplies have been certified 80Plus Platinum for efficiency and come with all modular cables.
In addition to the two new digital power supplies, Corsair is also revamping the traditional analog AX Series line with the addition of the AX860 and AX760 models, which include 80 PLUS Platinum certification, all-modular cables, and significantly lower noise levels than previous models.
Corsair AX860i Digital ATX PSU Key Features:
• Digital Signal Processor (DSP) for extremely clean and efficient power
• Corsair Link Integration for monitoring and adjusting performance
• 860 watts continuous power output (50°C)
• Dedicated single +12V rail with user-configurable virtual rails
• 80Plus Platinum certified, delivering up to 92% efficiency
• ZVS / ZCS technology for high efficiency
• Independent DC-to-DC converters
• Ultra quiet 120mm double ball bearing fan
• Silent, Fanless mode up to ~30% load
• Self-test switch to verify power supply functionality before installation
• High quality capacitors for uncompromised performance and reliability
• Fully modular cable system
• Conforms to ATX12V v2.31 and EPS 2.92 standards
• Universal AC input (90-264V) with Active PFC
• Over-current, over-voltage, under-voltage and short circuit protection
• Dimensions: 150mm (W) x 86mm (H) x 160mm (L)
• 7-Year warranty and legendary Corsair customer service
Here is what Corsair has to say about their new AX860i Digital ATX PSU:
"The revolutionary AXi Series PSUs are the first desktop PC power supplies to use digital (DSP) control and Corsair Link to bring you an unprecedented level of monitoring and performance customization. The DSP in the AX860i Series makes on-the-fly adjustments for incredibly tight voltage regulation, 80 PLUS Platinum efficiency, and clean, stable power.
Real-time monitoring and control with Corsair Link. Put the AX860i under your control by connecting it directly to a USB header on your motherboard with the included cable, or to a Corsair Commander (available separately). Then, download the free Corsair Link Dashboard software for unrivaled power supply monitoring and control options.
Monitor power input and output, efficiency, fan speed, and internal temperature, directly from the Windows based application. Or, take it to the next level and set up and modify fan speed profiles, or even select from virtual “single rail” or “multi-rail” software modes, with selectable OCP points.
Stable and reliable power delivery. DSP-controlled, real-time voltage regulation helps insure that your valuable components receive clean, stable power.
Less heat and lower operating cost. The AX860i's extreme efficiency earns it coveted 80 Plus Platinum certification. Less wasted power means minimal excess heat. This can reduce the strain on your other components, and it can save you money over the long run in the form of lower power bills.
Quiet operation at low loads. Super-high efficiency has another benefit: silence. The thermally-controlled fan doesn't even spin at low-loads. It's ideal if you're building a quiet PC or you just want to reduce the amount of ambient noise in your life.
Easy installation and cable routing with better airflow. The fully modular cable set allows you to use only the cables you need, and the flat design makes cable routing much easier in tight spaces. You get a clean-looking system build with cables out of the airflow path for efficient space usage that's energy efficient as well. "
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
• Differential Temperature
The Corsair AX860i Digital ATX 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)