Corsair RM750x 750W Power Supply Review

Installation & Testing
We will be installing the RM750x in our graphics card test rig. So this is not your ordinary install, but there were no issues getting the unit installed and the flat cabling is very easy to work with. Also since the unit is fully modular I only used the cables I needed, which led to much less cable mess.

Our test system is comprised of the following components.

Processor: Intel Core i7-5960X
Motherboard: Gigabyte X99-UD4
Memory: 32GB Crucial DDR4
Graphics: MSI R9 380 Gaming 4G
Power: Corsair RM750x
Cooling: Corsair H80i GT
Case: Lian Li PC-T80

Disclaimer: We do realize that our testing methods for power supplies are not up to the standards that we would like. Unfortunately we do not have the equipment to properly test power supplies the way that we would like. The tests below do give you a good idea of how the unit will perform, but we know they are not as accurate as we would like. All power supply manufactures are made aware of our testing methods before they send us a unit.

Multimeter Testing

Our first set of tests we will be using a Mastech MS8268 digital multimeter. Here we will measure the rails but at idle (Windows Desktop) and then at load (Heaven Benchmark looped). This will give you a good idea of power fluctuation during gaming sessions.


As you can see there is not much fluctuation at all. Our motherboard software allows us to record the 12V and 5V rails. So doing the same Heaven Benchmark loop we recorded the voltages every 5 seconds for 1 hour.


As you can see the rails did not move much at all.

When it comes to noise the unit is extremely quiet. We also could confirm that the fan on the unit did not turn on until we started doing very intensive tasks.

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