Power Supplies

Corsair RM750i - Review

One of the most important elements in a computer equipment, without a doubt, is the power supply. Today we are going to analyze the Corsair RM750i 750W power supply, which has an interesting peculiarity. Through the Corsair Link we can monitor the operation of it. View voltages, current, supplied power, and power supply efficiency. It allows us to monitor the consumption of our system and verify that everything works correctly.

Thanks to Corsair for lending us this power supply

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Corsair RM750i Corsair RM750i

Unboxing Corsair RM750i

corsair rm750i power supply front box

Like all Corsair products, this PSU shares the brand's own design. We can see an image of the source as well as its power. It is also indicated on the box that it has 80Plus Gold certification that guarantees an efficiency of 92%, at 50% of the load.

corsair rm750i power supply back box

The back of the Corsair RM750i case shows us the power supply from different angles. Some characteristics are highlighted, such as the efficiency curve, the 0dB technology curve and the powers for each of the voltages.

corsair rm750i unboxing power supply

It is interesting, because what we see with serigraphs is nothing more than aesthetic protection. Inside we find a simple cardboard box where only the name of the brand appears. Inside we already find the power supply and all the necessary elements.

corsair rm750i power supply manual cables

Specifically inside we find, on the one hand, the instruction manual and the warranty book. A Schucko cable is added that runs from the plug to the power source. In addition, we find a cloth bag where all the cables of the same are included. Remember that this power supply is completely modular.

Corsair RM750i design

corsair rm750i side power supply

The Corsair RM750i is characterized as a high-quality power supply designed for powerful gaming equipment. This power supply has dimensions of 150x86x180mm, which falls within the usual measurements, so we should not have problems when installing it in any ATX gaming chassis.

corsair rm750i power supply ports cables

As we said, the power supply is completely modular. All cables are separate, so that we install only the ones we need. This makes cable management easier and we do not have redundant cables that we are not interested in.

corsair rm750i power supply cables

Cables arrive separately, for more efficient management. Corsair has chosen to only mesh the ATX, EPS and PCIe cables, the rest of the cables being unmeshed. Specifically we find the following cables:

  • 1 ATX 20 + 4-pin cable (60 cm)
  • 1 EPS / ATX 4 + 4 pin cable (65 cm)
  • 2 cables x 2 PCIe connectors (6 + 2) pins (60 + 15 cm)
  • 1 cable x 4 SATA connectors (55 + 10 + 10 + 10 cm)
  • 1 cable x 4 SATA connectors (40 + 10 + 10 + 10 cm)
  • 2 Molex to Floppy converter cables (10 cm)
  • 1 cable x 4 Molex connectors (45 + 10 + 10 + 10 cm)
  • 1 cable x 3 Molex connectors (45 + 10 + 10 cm)
  • Corsair Link Cable from USB Header to Mini-USB (80 cm)
  • Corsair Link Interconnect Cable (80cm)
corsair rm750i link power supply

This power supply features the Corsair Link system. This system allows the consumption, fan rotation speed and other parameters to be monitored via USB. In addition, this technology allows several power supplies to be connected in series so that they work in sync. This is not at all common and is designed especially for users or professionals who mount very powerful and high-consumption systems that require several power sources to operate.

Characteristics Corsair RM750i

corsair rm750i link power supply motherboard

Inside the box we find the cable for the Corsair Link system. This cable features a USB micro B connector that connects to the power supply and a USB header that connects directly to the internal USB pins on the motherboard. Eliminating the need to pull a cable outside the chassis or to disturb it. We'll see a bit of Corsair Link software later.

corsair rm750i fan power supply

Something very interesting in this power supply is that it makes use of 0dB technology in the fan. At room temperature and as long as the consumption is below 300W, the 135mm fan will not work. At that point it will start working, offering a loudness of 12dB and a flat load will offer a loudness of 20dB. We will hardly get to 100% load on the power supply, but it is interesting to know.

Specifications Corsair RM750i

  • MTBF: 100,000 hours
  • Certificate: 80 Plus Gold
  • Power: 750 watts
  • Fan technology: Fluid Dynamic Bearing bearings
  • Fan size: 135mm
  • C-Link Digital
  • Continuous outlet rated temperature: 50 ° C
  • ATX connector: 150x86x180mm
  • fully modular
  • Sheathed Cables: Sleeved and Flat Black Cables
  • 1x ATX connector
  • 1x EPS connector
  • 2x floppy connector
  • 7x Four-pin peripheral connector
  • 4x PCI connector
  • 8x SATA connector
  • Weight: 1.93kg


The Corsair Link software has been quite updated and is now a very complete suite. It allows controlling the RGB of the different installed components, the speed of the fans and also controlling the power supply. Among others, the software indicates the input and output power, which will vary due to heat losses. In addition, it allows to change the configuration of the power supply, which can work in single 12V rail or dual 12V rail.



Possibly this Corsair RM750i 750W power supply is one of the best we can find on the market. Offers us a 92% efficiency under 50% load and it also has Corsair Link support. Using this latest technology, we can see the input consumption, the output (towards the computer components), the working voltages and the amperage. Thanks to the software suit we can control this power supply and make some adjustments.

It completely lacks RGB lighting, which we quite liked, as adding LEDs to the power supply makes little sense. We liked the 135mm fan, which is very quiet and takes a long time to start. If we are not playing games or doing heavy tasks, it will hardly be possible to start the fan.

  • 80Plus Gold Certification
  • 0dB technology up to 300W consumption (40% load)
  • Fully modular
  • Allows monitoring via Corsair Link
  • Offers 10 years warranty
  • The 135mm fan can reach a maximum loudness of 20dB
  • Japanese capacitors
  • Allows switching between 12V Single Rail and Dual Rail
  • We can't think of anything
DIAMOND HardwareSfera 300x300 Medal

Corsair RM750i


The Corsair RM750i power supply is an ideal solution for those looking to build a high-performance gaming rig. Through the Corsair Link we can monitor the input and output consumption, thus knowing the efficiency at all times. In addition, we can see the voltages it offers, the current and other interesting parameters.

User Rating: 4.55 ( 1 votes)
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Robert Sole

Director of Contents and Writing of this same website, technician in renewable energy generation systems and low voltage electrical technician. I work in front of a PC, in my free time I am in front of a PC and when I leave the house I am glued to the screen of my smartphone. Every morning when I wake up I walk across the Stargate to make some coffee and start watching YouTube videos. I once saw a dragon ... or was it a Dragonite?

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