SKU CMPSU-1050HX/RF
Professional Series™ HX1050 — 80 PLUS® Silver Certified Modular Power Supply (Refurbished)

€239.99 EUR

The CORSAIR Professional Series™ HX1050 PSU utilizes advanced DC-to-DC circuitry, and exceeds the requirement for 80 PLUS® Silver certification standards, for up to 88% energy-efficiency.

OUT OF STOCK

Legendary Performance and Reliability

Quiet operation at low loads, modular cabling and 80 PLUS® Gold efficiency makes HX Series PSUs a great choice for high-performance PCs.

Quiet operation at low loads

Basic PC power supplies have fans that spin whenever your PC is on – whether you’re pushing your graphics card to the limit or just surfing the web. HX Series power supplies are smarter than that: they generate less heat, so they require less cooling, and the thermally controlled fan only spins when it’s needed.

Slay the cable kraken

The modular cable set allows you to use only the cables you need for your particular set of components. There’s no more unwieldy mythical tentacled monstrosity of unused cables to clutter up the inside of your case.

High efficiency for lower energy consumption and less heat generation

Efficiency is the measurement of how well a power supply converts the AC power from your outlet to the DC power used by your PC’s components. If your power supply isn’t efficient, it will generate more heat, which requires more cooling and more fan noise. And, it might even affect your power bill.

HX Series PSUs are among the most efficient on the market. They help keep your PC cool and quiet, and your power bill down.

ATX Connector
1
MTBF hours
100,000 hours
Power
1050 Watts
Warranty
One year
80 PLUS Efficiency
Silver
EPS Connector
2
Floppy Connector
2
Modular
Yes
PCI-E Connector
6
SATA Connector
12
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By TechPowerUP

Posted on  June 24, 2011

TechPowerUP recommends the Corsair HX1050

“Overall the Corsair HX1050 proved to be a good performer which for sure is worthy of its high price. With the six PCIe connectors that it's equipped it can easily feed three high-end VGAs along with other power hungry components. Also even at high loads the fan will work very efficient and runs quiet enough. Adding the seven years of warranty makes the HX1050 a very attractive deal.” "Even with 1050W of load it's close to 89% [efficient]. Many Gold units would envy those efficiency readings."

Full Review!

By TweakPC

Posted on  July 25, 2011

Corsair HX1050 wins the "Excellent Hardware" award at TweakPC.de

“The Corsair HX 1050 is convincing not only with its performance and beautiful appearance, but also with an attractive price. There is also 7 year warranty, which is great for a power supply of this class. Overall the performance of the HX1050 deserved the “Excellent Hardware Award”.

Full Review!

By Overclockers Club

Posted on  December 18, 2011

Corsair HX1050 gets the "Silver" award at Overclockers Club

"The Corsair HX1050 power supply is well made, nicely packaged and comes with a good set of accessories and all for just over $200 at most major retailers. A fair price when you look at what else is available in its class. If you are in the market for a solid power supply at a reasonable price then the HX1050 comes highly recommended. I have no hesitation in awarding the Corsair HX1050 power supply a OCC Silver award."

Full Review!

By Tweak.dk

Posted on  June 22, 2011

Corsair HX1050 wins the "Editor's Choice" award at Tweak.dk

Publication language is Danish: The HX1050 gets a great review from Tweak.dk in Denmark. It’s considered to be well designed, well built, good looking, stable, and also very quiet.

Full Review!

By Hardware.no

Posted on  January 19, 2012

Corsair HX1050 PSU wins the "Excellent" product award at Hard-H2O.com

Publication language is Spanish: "The Corsair HX1050 offers total stability, is inaudible in most cases, has an excellent finish in both structure and wiring, and full warranty for 7 years, something few manufacturers dare to offer."

Full Review!

By Inside Hardware

Posted on  June 30, 2011

Corsair HX1050 scores 9.3/10 and wins the "Good Performance" award at VR-Zone

"Any enthusiast would love the electrical performance of the HX1050. Voltage ripple is very low and the electrical efficiency of the HX1050 sets the standard for 80Plus Silver certified units. The thermal performance of the HX1050 is very good, although it relies on the powerful cooling fan and consequently the acoustics performance suffers. We cannot claim that the HX1050 is loud but it could do a lot better with some minor improvements."

Full Review!

By Overclock3D

Posted on  June 30, 2011

Corsair HX1050 wins an award at VR-Zone

"Any enthusiast would love the electrical performance of the HX1050. Voltage ripple is very low and the electrical efficiency of the HX1050 sets the standard for 80Plus Silver certified units. The thermal performance of the HX1050 is very good, although it relies on the powerful cooling fan and consequently the acoustics performance suffers. We cannot claim that the HX1050 is loud but it could do a lot better with some minor improvements."

Full Review!

By Hardware Canucks

Posted on  July 19, 2011

Corsair HX1050 scores 94% and wins the "Editor's Choice" award at Tweaktown.com

"Corsair has done a spectacular job with the introduction of the HX1050 into the Professional Series of power supplies. The HX1050 shows improvement in absolutely every area to make it worthy of replacing the HX1000. Voltage regulation was very good across the board from start to finish. While the DC output quality wasn't the best we have seen from Corsair, it certainly is good enough for almost any enthusiast grade system. Corsair also took a huge leap forward with the increased efficiency seen in the HX1050 and the extra two years of warranty. Corsair adds a bit more to sweeten the deal by offering the HX1050 for $219 which is the same price as the older and much less efficient HX1000."

Full Review!

By HWzone

Posted on  July 27, 2011

Corsair HX1050 wins 3 awards at Technik3D - Gold, Eco, and Value awards

Publication language is German: “The Corsair CMPSU-1050HX offers everything a modern power supply should, and is surprisingly quiet for the relatively high output power of 1,050 watts. The built-in 140mm fan was barely audible at full load, and it was barely perceptible when overloaded by 13% (1189W) too.”

Full Review!

By Jonny Guru

Posted on  August 16, 2011

Corsair HX1050 gets the full 5/5 stars at NextHardware in Italy

Publication language in Italian: Corsair HX1050 get the full 5/5 stars at NextHardware in Italy

Full Review!

By Future Looks

Posted on  August 6, 2011

Corsair HX1050 scores 9/10 and wins the "Must Have" award at KitGuru

"The HX range look to be very competitively priced, with this HX1050 unit retailing for around £160 inc vat in the UK. This means it earns our highest award, being one of the finest power supplies in the respective price bracket." Pros: Great build quality and appearance Exceptionally quiet Custom CWT design is fantastic All round performance is stellar Cons: Its only semi modular "A Monster 1000W+ power supply and well worth the reasonable cash outlay, especially if you can’t afford the range topping AX units."

Full Review!

By TechArena

Posted on  November 30, 2011

Corsair HX1050 picks up the "Editor's choice" award Silver from Hard OCP

Corsair HX1050 picks up the "Editor's choice" award Silver from Hard OCP

Full Review!

By TweakPC

Posted on  July 27, 2011

Corsair HX1050 wins the "Performance" award at HardwareHeaven

"For those looking at a 1000w+ PSU the Corsair HX1050 impresses in every aspect."

Full Review!

By Hexus

Posted on  August 9, 2011

Corsair HX1050 wins the "Gold" and "Silent" award at Overclockingstation.de

Publication language is German: Corsair HX1050 wins the "Gold" and "Silent" award at Overclockingstation.de

Full Review!

My Corsair PSU FAN doesnt work

Many Corsair PSUs feature a “Zero RPM” fan mode. At low loads, the PSU runs cool enough as to not require active cooling. So, in an effort to significantly reduce PSU noise, the fan controller is programmed not to spin the fan. At higher loads and higher temperatures, the fan will start at it’s lowest RPM and gradually ramp up to faster speeds as needed.

In a LINK enabled PSU (RMi, HXi and AXi, for example), one can turn this Zero RPM mode off using the LINK software.

If you want to make sure your Corsair PSU with Zero RPM fan mode has a properly functioning fan, simply watch the fan as you power on the PC. The fan should do one, small “test spin” before coming to a complete stop.

Why does a better power supply mean a better computing experience

So how does a better PSU equate to a better computing experience? Consider this: If your power supply isn't doing a good job of regulating voltage and filtering ripple, what is?

The computer power supply essentially converts AC to DC. Older or more basic computer power supplies convert AC to multiple DC voltages (+12V, +5V, +3.3V) at the same time. Newer, more advanced power supplies, convert AC to +12VDC, while smaller DC to DC power supplies within the power supply's housing convert the +12V to lesser used +3.3V and +5V. The latter is more efficient because lesser used voltages are not converted unless they're required and converting DC to DC itself is more efficient than converting AC to DC as it requires fewer and smaller components.

After that voltage is converted, it's filtered with inductors and capacitors.


On the secondary side of this HX1050, we see a very large inductor and a handful of different sized capacitors.



So now we have two critical things to look at when looking at the output of this power supply: How well is the output voltage regulated and does this power output have minimal ripple?

I just used two words you hear a lot when people talk about computer power supplies: Regulation and ripple.

Computer power supplies use a "switching" technology to convert the AC to DC. And while the rectifier is switching on and off, it's producing DC that pulses in rhythm with whatever frequency the AC input is (60 Hz, for example, is your typical North American AC frequency) regardless of the frequency the rectifier is switching at. This is called noise. First, the voltage goes through an inductor, or a choke. This smooths out the waveform and lowers the frequency of the noise. Then you have your capacitors. Capacitors store electrical charges and can then output an electrical charge without the noise. If the voltage going into a capacitor raises or lowers with the switching frequency, the charge of the capacitor raises or lowers. This change in the capacitor's charge is much slower than the frequency of the switched power that's charging the capacitor. While this is how it filters the noise, this also creates ripple (small peaks and valleys in the DC output voltage). This is when larger capacitors, or capacitors in series, can help, because the slower the change between the lowest and highest voltages, the more stable the output voltage and ripple is reduced. But the engineers designing these power supplies have to be careful. If you use too many capacitors, too large of a capacitor or even too large of an inductor, you reduce your power supply's efficiency. Every part of a circuit that power goes through has some loss of power and the capacitors dissipate that filtered noise as heat, and that heat is lost power!

Why does a better power supply mean a better computing experience

This is a screenshot of an oscilloscope measuring ripple on a power supply that does not do a very good job of filtering.

Why does a better power supply mean a better computing experience


When a power supply does a better job of filtering ripple, it will look like this on an oscilloscope.



Regulation is how well a power supply responds to load changes. Say the power supply is putting out +12VDC with a 2A load. Let's say that load increases to 5A, 10A.. or even 15A. Just as I explained with the CPU voltage regulators, Ohm's law comes into play. As current increases, resistance increases. As resistance increases, voltages drop. A quality power supply should be able to compensate for this. Usually the monitoring is done internally by a "supervisor IC". The supervisor IC can tell the PWM (pulse width modulation) controller that it needs the rectifier to switch at a different frequency to adjust the output voltage accordingly. Sometimes, a "sense wire" senses the drop in voltage at the load and communicates this back to the IC. This gives the IC a little bit of a head start in telling the PWM controller to compensate. "Digital power supplies" like the Corsair AXi Series PSUs use a digital signal processor to monitor voltages and tell the rectifier directly to switch at different frequencies. Since the monitoring and control is all digital, the compensation is handled much quicker (more on how digital power supplies work can be found here.)

So how does a better PSU equate to a better computing experience? Consider this: If your power supply isn't doing a good job of regulating voltage and filtering ripple, what is?

While computer power supplies output multiple DC voltages (+12V, +3.3V and +5V) these are not all of the voltages a computer requires to run.

Take the CPU, for example. CPUs used to operate on voltages derived directly from the power supply. Originally, +5VDC. Eventually, this voltage was reduced to +3.3VDC. In an effort to make CPUs more and more power efficient, voltage continued to drop and voltage regulators on the motherboard were required to take either +3.3VDC or +5VDC from the power supply and reduce these voltages to even lower voltages. Naturally, one would think that converting one voltage to another would be more efficient if the before and after voltages were closer together. But as CPU's became faster, they required more power, but at lower voltages. The CPUs themselves were more efficient, but not the process of converting that power. More power (watts) at lower voltages require more current. Higher current, without increasing wire and trace gauge, increases resistance. Resistance then decreases voltage and creates heat, which is counterproductive to the reason CPU core voltages were being lowered in the first place! The solution was the ATX12V standard. A 4-pin power connector that delivers +12VDC, which was then upgraded to an 8-pin power connector that could deliver even more current, was added to the power supply. With the increase of voltage to the CPU's VRMs (Voltage Regulation Modules), less current is required to deliver power to the motherboard. Of course, with this greater delta in voltages (between the +12VDC and the CPU's core voltage), more robust voltage regulation on the motherboard is required.

Why does a better power supply mean a better computing experience
This motherboard uses heatsinks to passively cool components of the voltage regulation circuit.



With the new "Haswell" CPU coming from Intel, we'll start to see voltage regulation on the CPU itself. This will reduce power current on the pins that move power from the motherboard's traces to the CPU core and therefore reduce the pin-count required to deliver that power. This will also allow the CPU to dynamically scale the voltage of the CPU more efficiently than ever before. The voltage regulators in Haswell are certainly no slouch when it comes to efficiently converting voltages, but this still does not completely replace the motherboard's duty of converting, and filtering, the +12V from the power supply to a lower voltage as Haswell has an input voltage of 2.4VDC.

The same is true with your graphics cards. GPUs really are just small CPUs. Heck, in some cases with GPUs running as fast as 1GHz, they're more powerful than some CPUs! PCIe power connectors coming off of the power supply deliver +12V to the graphics card where voltage regulators drop the voltage down to what the GPU needs.


Two PCIe power connectors deliver +12V to this graphics card's PSU, but the GPU doesn't use +12V.  It has to convert it to a lower voltage first.



The ATX specification says that the power supply is allowed to output voltage with regulation and ripple within a certain tolerance. The ripple can be as much as 1% and still be within specification. That means you can have as much as ±120mV of ripple on the +12V. Your voltage regulation can be as much as ± 5%. That means you +12VDC can be as high as +12.6V or as low as +11.4V and it is still within ATX specification. Likewise, your motherboard or graphics card's voltage regulator would have a similar tolerance for input voltage. In other words, if you have a VRM that is made to convert +12VSC to +2.4VDC, that VRM should be able to take in voltages as high as +12.6VDC or as low as +11.4VDC and still be effectively able to product +2.4VDC. The VRM has an added tolerance for slew rate. Slew rate is essentially the rate at which voltages change from one to another. If voltage drops from +12VDC to +11.99VDC within a microsecond, your slew rate is 10mV/µs. To help maintain these tolerances, your motherboard, graphics cards and other components also has some inductors and capacitors to filter voltages between the power supply and the VRM.

So, if everything is within specification, there's no problem, right?

Well, not so much. You see, as these components regulate voltage, and the harder they have to work to do so, they get hot. This heat is not only wasted energy, but also shortens the life of the components. And while voltage regulator's MOSFETs are often passively cooled with heatsinks (at least they are on high-end motherboards), capacitors are not. And if the MOSFETs are not passively cooled or there are fewer of them (which would be a VRM with "less phases"), then they will have to work harder to regulate voltage and run even hotter. Heat isn't good for a computer's components, so any way we can address the problem is a plus. Another problem with proper voltage regulation and filtering is that they take up space on a PCB. Like I said with the power supply: If you want to have less ripple, you need to have a larger or more capacitors. The same is true with voltage regulation circuits on motherboards and graphics cards. And the same is true with the MOSFETs too. You can have more phases for cleaner power, but if the MOSFETs aren't capable of more current, the extra phases will not do you any good. But higher power MOSFETs, more phases, larger and more capacitors all take up space. We don't always have enough space on a motherboard or graphics card to give up as real estate for near-perfect on-board voltage regulation.

And then there are the effects of ripple on overclocking. While your VRMs may be able to regulate voltages well, they won't be able to get rid of every bit of ripple and that gets passed right through to your CPU or GPU. Those of you that overclock know that you typically have to increase the CPU or GPUs Vcore voltage. This is because, as the transistors in the processing unit cycle, the regulators can't switch on and off at the higher speed required to keep the transistor energized at the required voltage. Increasing the voltage actually gives the CPU more than it needs, but allows the regulators to give the CPU what it needs more quickly than when it needs it. The unfortunate by-product of this is heat (everything keeps coming back to heat, doesn't it?). If you have any ripple in that Vcore voltage, it's going to prevent the VRMs from delivering exactly whatever voltage is needed when the CPU's transistors are operating at whatever clock speed you're trying to operate them at. The solution for this problem is to operate the CPU with an even higher Vcore voltage than what is actually needed. The downside of this is... wait for it.... higher CPU temperatures.

So, to summarize, a better power supply actually gives you longer motherboard and graphics card life, better overclocking and even longer life of your CPU and GPU. It's a win-win situation!

 

PSU Paper Clip Test

Testing our power supply without the use of your motherboard is generally pretty simple. Below we will show you how to test all our PSU's.

To start off you will need the following:

  1. Corsair power supply
  2. Power cord
  3. ATX 20-24 pin PSU connector and 4 Pin Peripheral Connector
  4. Paperclip
  5. One or more case fans
  6. 2/3 pin case fan connector to Molex adapter if needed
PSU Paper Clip Test

Step 1: ( Step for AX/HX series only)

Connect both the 20-24 pin (AX Series) and the 4-pin Molex (AX/HX series) connector to the PSU. Make sure to use the cables provided with power supply. Note that on many of our PSUs, these cables are permanently connected.

PSU Paper Clip Test



Step 2:

Attach the case fan to the Molex connector. If you're case fan only has a 2/3 pin connector, use a 2/3 pin case fan connector to Molex adapter. The PSU does have a built in fan, but depending on the series, it might not spin without a certain amount of load or reaches a certain temperature. See picture below

PSU Paper Clip Test



Step 3:

Bend the Paper clip into a u-shape.

PSU Paper Clip Test



Step 4:

Use the paper clip to connect it to the 20/24 pin connecter. Usually the wires are color coded (one green wire and mutiplie black wires), but with our AX version they are all black. To bridge the correct pins face the cable the exact same way shown in the picture below. Locate the pin which is indicated in Green (your green wire) and yellow (your black wire) on the picture below and bridge the two using the paperclip. One way to help make sure you have the correct pins, locate the missing pin on the 20/24 connector (boxed in blue) as it should be on the same row with the bridged pins (all our PSU series have a missing pin).

PSU Paper Clip Test



Final Step:

Make sure the switch on the back of the PSU is set to ( O ) before plugging each side of the power cable to the power supply and the wall outlet. Once the power cord is plugged into both the wall and power supply, make sure to check if all connections are good. Once complete, turn the switch on the back of the power supply to ( I ) and see if the case fan spins. If so, the PSU is functional!

Warranty FAQ

How do I make a warranty claim?

Prior to submitting your warranty claim, we recommend checking the Corsair knowledge base at https://support.corsair.com/ first, where you can find answers to commonly-asked questions. You can also receive troubleshooting assistance by clicking Ask a Question or proceed with product replacement by clicking Request an RMA.

Valid warranty claims should be processed through the retailer where the item was purchased during the first thirty (30) days after purchase. This period may vary depending on where you purchased your product; please verify the return policy with the retailer where you purchased your product. Any warranty claims that cannot be processed through your original point our purchased should be submitted to Corsair at https://support.corsair.com/ 

What are Corsairs replacement options?

Corsair offers the following Warranty fulfillment options:

Standard Replacement:

Through Corsairs Standard Replacement process, Corsair will issue an approved RMA number for the return and replacement of your defective product(s). Our Standard Replacement processing time from receipt of your product(s) to the replacement product(s) shipment is 1-3 business days plus transit time.

Express Replacement:

At Corsair, we understand the need to be up and running at all times! To minimize down time, we offer an Express Replacement RMA process. Through this process Corsair will ship your replacement product(s) prior to receiving your defective product(s). This process requires a valid Credit Card where a holding fee will be applied for the cost of the product until the returning product(s) are received by Corsair. To avoid being fully charged for the Express Replacement product(s), the defective product(s) must be received by Corsair within 10 business days from the date your Express Replacement order is shipped.

Accessory Product Request:

Experiencing a problem with a Corsair Component Product? Many of Corsair products have easy to install replacement accessories which will resolve the issue and prevent the need to return the entire product for replacement.

Where do I ship my items?

Corsair operates multiple RMA receiving locations worldwide. Your RMA confirmation will specify the specific return address you must use when sending your RMA package. This will be your standard return location and should not be changed without prior approval from Corsair. Any packages received at an unauthorized location may be refused and returned to the sender at the senders expense.

How to find your lot code

 

Lot codes for Corsair products can generally be found in the follow locations. For more specific information, please view the Corsair knowledge base Lot Code article for a particular product series.

Headsets: The code is located on the earcup's arm.

Speakers: The code is located on the back of the subwoofer.

Case: The code is located on the back panel.

Cooling: The code is located on the radiator.

Flash: The code is located on the unit's packaging, near UPC barcode.

SSD: The code is located on the label on top of the SSD.

Mice: The code is located on the label taped next to the USB connector.

Keyboard: The code is located on the packaging near the UPC barcode.

Memory: The code is on the memory module's label.

PSU: The code is on the PSU label, next to the serial number.