Corsair Professional Series AX760i and AX860i Review

1. Introduction2. Corsair AX760i (Bundle & Cables)3. Corsair AX760i (External)4. Corsair AX760i (Internal)5. Corsair AX760i (Super High Res Gallery)6. Corsair AX860i (Bundle & Cables)7. Corsair AX860i (External)8. Corsair AX860i (Internal)9. Corsair AX860i (Super High Res Gallery)10. Corsair AX760i (Testing Methodology & Results)11. Corsair AX860i (Testing Methodology & Results)12. Closing Thoughts13. View All Pages

In August this year we analysed the latest high end power supply from Corsair, the AX1200i. It claimed our highest award and exhibited no weaknesses. The lower wattage models have been a long time coming, but today the wait is thankfully over.

Corsair have just released the AX760i and AX860i power supplies, priced around the £164.99 and £179.99 inc vat point respectively. The AX1200i is one of the finest power supplies available in the enthusiast sector and by the end of this review we will know if the AX760i and AX860i share the same admirable award winning characteristics.

Corsair AX760i and AX860i Overview:

• Digitally-controlled power
  State-of-the-art DSP-based power control technology providing outstanding DC voltage regulation, reliability and stability.
• 80 PLUS® Platinum Efficiency
  DSP-control and Zero Voltage Switching and Zero Current Switching (ZVS / ZCS) technology results in up to 92% energy-efficiency, resulting in lower energy bills, and less heat and noise.
• Ultra Low Noise Design
  Thanks to its high efficiency and low heat output the AX760i and AX860i are able to operate in a silent, fanless mode up to 30% of the rated wattage (228W/258W), allowing for the possibility of fanless gaming. The fan speed ramps slowly above 30% load, so even fully-loaded PCs can be powered quietly.
• Low Ripple and Noise: up to 3x better than the ATX Spec
  Low ripple and noise equals high-quality power, allowing your performance-critical components, such as high-end graphics cards, to operate reliably for longer.
• AX760i  – 63.3 Amp Single +12V Rail
  The AX760i features a massive 63.3 Amp (759.6 Watt) single +12V rail, making it the idea PSU for ultra-high end SLI and Crossfire gaming PCs based around multi-core CPUs.
• AX860i – 71.6 Amp Single +12V Rail
  The AX860i features a massive 71.6 Amp (859.2 Watt) single +12V rail, making it the idea PSU for ultra-high end SLI and Crossfire gaming PCs based around multi-core CPUs.
• Corsair LINK interface
  Thanks to the DSP-based design, the AX760i and AX860i can be accessed using the Corsair Link interface. This server-inspired diagnostic tool can record and monitor real-time efficiency, power usage, and adjust fan profiles. Uniquely, the AX760i and AX860i can also be configured as a multi-rail device with individual PCI-E over-current protection (OCP) trip points.
• Self Test Switch
  The self test switch on the PSU confirms that all the DC output voltage rails are functioning correctly, and the fan is functional, providing a simple method of checking that the power supply is functioning correctly.
• Fully Modular Cable System
  The fully modular cable system provides total flexibility when building or upgrading your PC, since you use only the cables that you need. This reduced cable clutter also improves case airflow and cooling, and makes it much easier to build your high-end system and route cables.
• Reliable
  As with all AX PSUs, the AX760i and AX860i is built with premium components, such as high-temp 105° C capacitors, and is capable of continuous power delivery at a temperature rating of 50° C, ensuring maximum performance and reliability even in the most hot-running performance PCs.
• Protected
  The AX760i features a comprehensive array of protection and safety features. This includes Over-Voltage Protection (OVP), and Over-Current Protection (OCP) on the 12V, 5V, and 3.3V rails, Over-Temperature Protection (OTP), and Short-Circuit Protection (SCP).
• The Corsair Advantage
  Corsair Professional Series AXi PSUs are backed by a reassuring 7-year warranty and comprehensive customer support via telephone, email, forum and the Tech Support Express helpdesk.

The Corsair AX760i ships in a lovely box, similar to the AX1200i which we reviewed in August. It is a more compact shaped box.

Inside the box is a user manual, cable tidies, large felt bag of modular cables and mounting screws.

Corsair also include a Corsair LINK interface module, which is connected to the power supply for direct access. This is a ‘server-inspired’ diagnostic tool which can record and monitor real time efficiency, power usage and adjustment of the fan profiles. The power supply can also be configured as a multi rail device with individual PCI-E over current protection trip points.

Due to time constraints before this review was published we were unable to look again at the latest software. The image above is supplied by Corsair with details below:

‘The hybrid digital design of the AX860i allows for a full suite of telemetry to be communicated from the AX860i to the PC over a Corsair Link interface to the included USB dongle, or Corsair Link Commander Unit (sold separately). Using the free Corsair Link Dashboard software, you can then monitor a huge range of performance variables, including power input and output, efficiency, fan speed, and internal temperature. You can also configure and customize some features, including selecting fan speed modes, and even select between single rail or multi-rail modes, with selectable OCP trip points. This allows you to, for example, configure each PCI-E graphics connector separately, providing a higher maximum amount of current to a high-end GPU in a multi-GPU setup.'

Corsair bundle a series of high grade 18AWG cables with this unit, some of which are sleeved. The peripheral cabling are all flat ribbon style which will help maximise air flow throughout the chassis.

Above is a complete list of the modular cables included with the AX760i power supply. The main chassis is a pure modular design so none of these are hardwired. Corsair have included six 6+2 pin PCI-E cables which is class leading for a 760W power supply. Corsair haven't skimped on the cable length either, the ATX12V 8-4 Pin connectors for instance are 650mm long.

The AX1200i had 16 SATA connectors and 12 Molex connectors, but aside from that, the rest of the cable configuration and length is the same.

Corsair power supplies are a lesson to many other manufacturers on how it should be done. The paint work is deep and the two tone labels on either side of the chassis look elegant. The paintwork is resistant to fingerprints and is very difficult to mark. As with the AX1200i, we ran a screwdriver down one side of the chassis with a little force and it didn’t mark at all.

The large 120mm fan is hidden behind a black steel grill with the Corsair logo proudly presented in the center. We will have a closer look at the fan later in the review when we open the chassis.

This side of the chassis is honeycomb vented to help improve air flow around the components. At the side is a power switch and connector.

The modular panel takes up almost the full width of the chassis. All of the ports are labeled clearly to ensure the installation phase isn't confusing for an inexperienced user. There is also a self test button and a ‘comm port’ which is used for Corsair Link connection.

The Corsair AX760i can deliver 63.3A to the +12v rail which is enough to power a high end dual card SLI or Crossfire configuration. Total power output is rated to 760 Watts @ 50c ambient temperature.

The AX760i incorporates a high grade Yate Loon Fan (D12BH-12) measuring 120mm. This is smaller than the D14BH-14 (140mm) which is used in the AX1200i. These fans use ball bearings and seven fan blades. The maximum rated speed is 2,300 rpm at +12V. These fans have been used in many other supplies over the last couple of years.

The AX760i is a Flextronics design and is packed from edge to edge with several rows of black heatsinks handling heat transfer. The design uses a DSP which reduces the overall number of discrete components. This reduced component count has the benefit of reducing losses in the circuit and helping to improve efficiency. Corsair also say that this reduction helps improve reliability.

The AX760i uses Zero Voltage Switching and Zero Current Switching (ZVS/ZVC) technology to switch at near 0V and 0A.

The AX760i features DC-DC regulation for 3.3V, 5V and 12V rails and secondary side rectification. The supply uses a 4 layer modular connector board PCB to help improve the ground return plane with lower resistance and low voltage drops.

Above an image of the LLC synchronous rectification board and the PFC inductor for Power factor correction. The design uses 105c rated capacitors throughout with a Panasonic 560uF, 420V in the primary stage.

On this page we present some super high resolution images of the product taken with the 24.5MP Nikon D3X camera and 24-70mm ED lens. These will take much longer to open due to the dimensions, especially on slower connections. If you use these pictures on another site or publication, please credit Kitguru.net as the owner/source.

The box is identical to the AX760i design. It is an artistic design with a moody lit, angled shot of the power supply muted underneath the name.

Inside the box is a user manual, cable tidies, large felt bag of modular cables and mounting screws.

Corsair also include a Corsair LINK interface module, which is connected to the power supply for direct access. This is a ‘server-inspired’ diagnostic tool which can record and monitor real time efficiency, power usage and adjustment of the fan profiles. The power supply can also be configured as a multi rail device with individual PCI-E over current protection trip points.

Due to time constraints before this review was published we were unable to look again at the latest software. The image above is supplied by Corsair with details below:

‘The hybrid digital design of the AX860i allows for a full suite of telemetry to be communicated from the AX860i to the PC over a Corsair Link interface to the included USB dongle, or Corsair Link Commander Unit (sold separately). Using the free Corsair Link Dashboard software, you can then monitor a huge range of performance variables, including power input and output, efficiency, fan speed, and internal temperature. You can also configure and customize some features, including selecting fan speed modes, and even select between single rail or multi-rail modes, with selectable OCP trip points. This allows you to, for example, configure each PCI-E graphics connector separately, providing a higher maximum amount of current to a high-end GPU in a multi-GPU setup.'

Corsair bundle a series of high grade 18AWG cables with this unit, some of which are sleeved. The peripheral cabling are all flat ribbon style which will help maximise air flow throughout the chassis.

Above is a complete list of the modular cables included with the AX860i power supply. The main chassis is a pure modular design so none of these are hardwired. Corsair have included six 6+2 pin PCI-E cables. Corsair haven't skimped on the cable length either, the ATX12V 8-4 Pin connectors for instance are 650mm long. This cable configuration is identical to the AX760i which we looked at earlier in this review.

The AX1200i had 16 SATA connectors and 12 Molex connectors, but aside from that, the rest of the cable configuration and length is the same.

Corsair power supplies are a lesson to many other manufacturers on how it should be done. The paint work is deep and the two tone labels on either side of the chassis look elegant. The paintwork is resistant to fingerprints and is very difficult to mark. As with the AX1200i, we ran a screwdriver down one side of the chassis with a little force and it didn’t mark at all.

The 120mm fan is hidden behind a black grill, with the Corsair logo positioned in the center.

One side of the power supply is honeycomb vented to improve air flow around the components. At one side there is a power slot and switch.

The modular panel is built to high standards, with all the ports labeled for ease of installation. There is also a self test button and a ‘comm port’ which is used for Corsair Link connection.

The Corsair AX860i can deliver 71.6A via the +12V rail which will cover a wide range of two and three way SLI and Crossfire configurations. The total power output is rated at 860W @ 50c ambient temperature.

The AX860i incorporates a high grade Yate Loon Fan (D12BH-12) measuring 120mm – this is the same fan as in the AX760i earlier in the review.

This is smaller than the D14BH-14 (140mm) which is used in the AX1200i. These fans use ball bearings and seven fan blades. The maximum rated speed is 2,300 rpm at +12V. These fans have been used in many other supplies over the last couple of years.

The AX860i is a Flextronics design and is packed from edge to edge with several rows of black heatsinks handling heat transfer. The design uses a DSP which reduces the overall number of discrete components. This reduced component count has the benefit of reducing losses in the circuit and helping to improve efficiency. Corsair also say that this reduction helps improve reliability.

The AX1200i uses Zero Voltage Switching and Zero Current Switching (ZVS/ZVC) technology to switch at near 0V and 0A.

The AX860i features DC-DC regulation for 3.3V, 5V and 12V rails and secondary side rectification. The supply uses a 4 layer modular connector board PCB to help improve the ground return plane with lower resistance and low voltage drops.

The design uses 105c rated capacitors from Panasonic and Rubycon throughout, including a Panasonic- 680uF, 420V in the primary stage.

On this page we present some super high resolution images of the product taken with the 24.5MP Nikon D3X camera and 24-70mm ED lens. These will take much longer to open due to the dimensions, especially on slower connections. If you use these pictures on another site or publication, please credit Kitguru.net as the owner/source.

Additional technical assistance: Peter McFarland and Jeremy Price.

Correctly testing power supplies is a complex procedure and KitGuru have configured a test bench which can deliver up to a 2,000 watt DC load. Due to public requests we have changed our temperature settings recently – previously we rated with ambient temperatures at 25C, we have increased ambient temperatures by 10c (to 35c) in our environment to greater reflect warmer internal chassis conditions.

We use combinations of the following hardware:
•  SunMoon SM-268
•  CSI3710A Programmable DC load (+3.3V and +5V outputs)
•  CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)
• Extech Power Analyzer
• Extech MultiMaster MM570 digital multimeter
• Extech digital sound level meter
• Digital oscilloscope (20M S/s with 12 Bit ADC)
• Variable Autotransformer, 1.4 KVA

DC Output Load Regulation
Combined DC Load	+3.3V		+5V		+12V		+5VSB		-12V
	A	V	A	V	A	V	A	V	A	V
75W	1.25	3.37	1.20	5.07	4.97	12.17	0.50	5.05	0.20	-12.05
150W	2.15	3.35	2.85	5.05	10.04	12.14	1.00	5.03	0.30	-12.07
375W	6.14	3.33	6.03	5.04	26.12	12.11	1.50	5.02	0.50	-12.09
565W	10.33	3.31	10.84	5.03	38.31	12.08	2.00	5.01	0.60	-12.10
760W	10.78	3.30	13.91	5.01	54.02	12.05	3.00	5.00	0.80	-12.12

Regulation is excellent, with all the rails holding steady, even at full load.

Corsair AX760i	Maximum Load
	893W

We managed to reach around 893W before the unit would shut down gracefully, after the protection kicked in.

Next we want to try Cross Loading. This basically means loads which are not balanced. If a PC for instance needs 500W on the +12V outputs but something like 30W via the combined 3.3V and +5V outputs then the voltage regulation can fluctuate badly.

Cross Load Testing	+3.3V		+5V		+12V		-12V		+5VSB
	A	V	A	V	A	V	A	V	A	V
734W	1.0	3.36	1.0	5.05	60.0	12.03	0.2	-12.03	0.50	5.02
154W	15.0	3.31	15.0	5.01	2.0	12.13	0.2	-12.03	0.50	5.01

The Corsair AX760i excelled with our cross loading tests. We hit the power supply with 60A on the +12V rail and it held at 12.03v. Other rails also exhibited fantastic results.

We then used an oscilloscope to measure AC ripple and noise present on the DC outputs. We set the oscilloscope time base to check for AC ripple at both high and low ends of the spectrum.

ATX12V V2.2 specification for DC output ripple and noise is defined in the ATX 12V power supply design guide.

ATX12V Ver 2.2 Noise/Ripple Tolerance
Output	Ripple (mV p-p)
+3.3V	50
+5V	50
+12V1	120
+12V2	120
-12V	120
+5VSB	50

Obviously when measuring AC noise and ripple on the DC outputs the cleaner (less recorded) means we have a better end result. We measured this AC signal amplitude to see how closely the unit complied with the ATX standard.

AC Ripple (mV p-p)
DC Load	+3.3V	+5V	+12V	5VSB
75W	10	10	5	10
150W	10	10	10	10
375W	10	10	10	10
565W	15	10	20	15
760W	20	15	25	15

Ripple results are very good on all the rails, holding well within the tolerance guidelines. The 12V+ output is particularly impressive, peaking at 25 mV.

Efficiency (%)
75W	88.33
150W	90.56
375W	93.87
565W	92.22
760W	91.53

The Corsair power supply certainly doesn't exhibit any efficiency concerns, peaking at just under 94 percent at 50 percent load.

We take the issue of noise very seriously at KitGuru and this is why we have built a special home brew system as a reference point when we test noise levels of various components. Why do this? Well this means we can eliminate secondary noise pollution in the test room and concentrate on components we are testing. It also brings us slightly closer to industry standards, such as DIN 45635.

Today to test the power supply we have taken it into our acoustics room environment and have set our Digital Sound Level Noise Decibel Meter Style 2 one meter away from the unit. We have no other fans running so we can effectively measure just the noise from the unit itself.

As this can be a little confusing for people, here are various dBa ratings in with real world situations to help describe the various levels.

KitGuru noise guide
10dBA – Normal Breathing/Rustling Leaves
20-25dBA – Whisper
30dBA – High Quality Computer fan
40dBA – A Bubbling Brook, or a Refrigerator
50dBA – Normal Conversation
60dBA – Laughter
70dBA – Vacuum Cleaner or Hairdryer
80dBA – City Traffic or a Garbage Disposal
90dBA – Motorcycle or Lawnmower
100dBA – MP3 Player at maximum output
110dBA – Orchestra
120dBA – Front row rock concert/Jet Engine
130dBA – Threshold of Pain
140dBA – Military Jet takeoff/Gunshot (close range)
160dBA – Instant Perforation of eardrum

Noise (dBA)
75W	<28.0
150W	<28.0
375W	30.3
565W	31.2
760W	32.8

The Corsair AX760i is very quiet, even at full load, peaking just below 33 dBa. At under 40%, the fan stops spinning completely, making it ideal for a low noise media center or enthusiast system build. Corsair have tuned the fan profile to be very passive indeed.

Temperature (c)
	Intake	Exhaust
75W	36	42
150W	38	45
375W	39	48
565W	45	53
760W	47	59

Exhaust temperatures are excellent, reaching a maximum delta of 12c above intake at full load. Corsair have tuned this unit to spin the fan slowly, even when fully loaded.

Maximum load	Efficiency
893W	87.4

For those interested, we measured efficiency when stressing the unit to breaking point. 87.4 percent efficiency at 893W … hardly practical, but interesting regardless.

Additional technical assistance: Peter McFarland and Jeremy Price.

Correctly testing power supplies is a complex procedure and KitGuru have configured a test bench which can deliver up to a 2,000 watt DC load. Due to public requests we have changed our temperature settings recently – previously we rated with ambient temperatures at 25C, we have increased ambient temperatures by 10c (to 35c) in our environment to greater reflect warmer internal chassis conditions.

We use combinations of the following hardware:
• SunMoon SM-268
• CSI3710A Programmable DC load (+3.3V and +5V outputs)
• CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)
• Extech Power Analyzer
• Extech MultiMaster MM570 digital multimeter
• Extech digital sound level meter
• Digital oscilloscope (20M S/s with 12 Bit ADC)
• Variable Autotransformer, 1.4 KVA

DC Output Load Regulation
Combined DC Load	+3.3V		+5V		+12V		+5VSB		-12V
	A	V	A	V	A	V	A	V	A	V
100W	1.56	3.39	1.78	5.07	6.67	12.18	0.50	5.07	0.20	-12.01
225W	3.73	3.37	3.87	5.05	15.59	12.14	1.00	5.06	0.20	-12.03
450W	7.52	3.35	8.36	5.04	30.77	12.12	1.50	5.04	0.30	-12.07
675W	11.31	3.34	12.37	5.03	47.48	12.07	2.00	5.04	0.50	-12.09
860W	1.60	3.32	1.16	5.02	65.00	12.03	0.50	5.02	0.20	-12.13

No concerns with the load regulation, holding well across all output stages.

Corsair AX860i	Maximum Load
	997W

We managed to get the PSU to achieve 997W before it would shut down, delivering around 137W more than rated specifications.

Next we want to try Cross Loading. This basically means loads which are not balanced. If a PC for instance needs 500W on the +12V outputs but something like 30W via the combined 3.3V and +5V outputs then the voltage regulation can fluctuate badly.

Cross Load Testing	+3.3V		+5V		+12V		-12V		+5VSB
	A	V	A	V	A	V	A	V	A	V
760W	1.0	3.37	1.0	5.07	60.0	12.05	0.2	-12.04	0.50	5.04
165W	15.0	3.33	18.0	5.02	2.0	12.16	0.2	-12.05	0.50	5.03

The Corsair AX860i exhibited no problems when dealing with our intensive Cross Loading test. It was tasked with 60A on the +12V rail and it held at 12.05V. The other rails delivered good results also.

We then used an oscilloscope to measure AC ripple and noise present on the DC outputs. We set the oscilloscope time base to check for AC ripple at both high and low ends of the spectrum.

ATX12V V2.2 specification for DC output ripple and noise is defined in the ATX 12V power supply design guide.

ATX12V Ver 2.2 Noise/Ripple Tolerance
Output	Ripple (mV p-p)
+3.3V	50
+5V	50
+12V1	120
+12V2	120
-12V	120
+5VSB	50

Obviously when measuring AC noise and ripple on the DC outputs the cleaner (less recorded) means we have a better end result. We measured this AC signal amplitude to see how closely the unit complied with the ATX standard.

AC Ripple (mV p-p)
DC Load	+3.3V	+5V	+12V	5VSB
100W	5	5	10	5
225W	5	10	10	10
450W	10	10	15	10
675W	15	15	20	15
860W	20	20	25	15

Noise suppression results are yet again excellent, peaking at 25mV on the +12V rail when under full load. The other rails fell between 5mV and 20mV across the full range of loads. Well within industry tolerance specifications.

Efficiency (%)
100W	88.87
225W	90.77
450W	93.89
675W	92.44
860W	91.61

Efficiency is excellent, peaking at almost 94 percent at 50 percent load. Efficiency falls down to around 91.5% at full load.

We take the issue of noise very seriously at KitGuru and this is why we have built a special home brew system as a reference point when we test noise levels of various components. Why do this? Well this means we can eliminate secondary noise pollution in the test room and concentrate on components we are testing. It also brings us slightly closer to industry standards, such as DIN 45635.

Today to test the power supply we have taken it into our acoustics room environment and have set our Digital Sound Level Noise Decibel Meter Style 2 one meter away from the unit. We have no other fans running so we can effectively measure just the noise from the unit itself.

As this can be a little confusing for people, here are various dBa ratings in with real world situations to help describe the various levels.

KitGuru noise guide
10dBA – Normal Breathing/Rustling Leaves
20-25dBA – Whisper
30dBA – High Quality Computer fan
40dBA – A Bubbling Brook, or a Refrigerator
50dBA – Normal Conversation
60dBA – Laughter
70dBA – Vacuum Cleaner or Hairdryer
80dBA – City Traffic or a Garbage Disposal
90dBA – Motorcycle or Lawnmower
100dBA – MP3 Player at maximum output
110dBA – Orchestra
120dBA – Front row rock concert/Jet Engine
130dBA – Threshold of Pain
140dBA – Military Jet takeoff/Gunshot (close range)
160dBA – Instant Perforation of eardrum

Noise (dBA)
100W	<28.0
225W	<28.0
450W	30.5
675W	32.4
860W	33.2

The fan is disabled at the lower power levels, below 40%, making the AX760i and AX860i ideal for quiet running systems such as a high powered media center.

Under 400W translated to a silent experience, and the fan only started to speed up shortly afterwards. At 650W, the fan was clearly audible, although never intrusive. Great all round results for the AX860i.

Temperature (c)
	Intake	Exhaust
100W	37	43
225W	38	46
450W	43	54
675W	46	56
860W	48	61

Exhaust temperatures are good, especially considering the low spinning fan which never generates much noise at all, even under full load. The AX860i rises to a maximum 13c above ambient threshold at full load.

Maximum load	Efficiency
997 watts	87.78

At 977 watts, the efficiency level measures 87.78%. Not a practical situation to be running 24/7, but worth noting.

We were bowled away by the Corsair AX1200i when we reviewed it back in August this year. Three months later and the AX760i and AX860i have not disappointed either. This Professional Series of power supplies from Corsair is without doubt one of the finest that money can buy.

Aesthetically, the finish is as good as you are likely to see, offering resistance against messy fingerprints and rough handling. Corsair products have received a lot of praise for their technical design over the years, but they really don't skimp on the quality of materials either.

Technically, neither AX760i or AX860i fail to deliver class leading results. Both supplies are capable of rock solid load regulation and the intensive cross loading tests were passed with flying colours. Ripple suppression is a particular high point, specifically the +12V peak result of 25mV. As we noticed with the +3.3V and +5V rails, the Flextronics design is a little higher than competing Seasonic products in the same price zone, however they are still excellent.

The bundle is exemplary for both units and the Corsair Link interface module will be welcomed by enthusiast users who love to tweak and monitor their systems. The option to adjust from single rail to independent rails will also prove useful to a select audience.

The acoustic performance of these units is definitely worth another mention as the clever fan profile ensures that noise is kept to a minimum at all times. Under 40% load, the fan does not spin at all, making them both ideal for a high grade media center which would be using around 150-250watts power under load. In this environment, both supplies would be completely silent at all times and worth the cost.

Aria are selling the Corsair AX760i for £161.94 inc vat and the Corsair AX860i for £176.34 inc vat. At this price they will be firmly targeting the wealthy enthusiast user with a high level of disposable budget. That said, in regards to a quality power supply, they are right at the top of their respective fields.

Pros:

• Built to the highest standards.
• very quiet.
• very efficient.
• both AX760i and AX860i have 6 PCI power connectors.
• ripple suppression.
• load regulation.
• software interface.

Cons:

• Expensive.

Kitguru says: Both AX760i and AX860i earn our highest ‘MUST HAVE' Award. If you want a dependable power supply that will last for years, then these deserve serious consideration.

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