Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
Performance Rating
The new RM1000x scores a little higher than the older model.
Noise Rating
The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).
The older RM1000x has lower overall noise output, but you cannot call the new one noisy.
Efficiency Rating
The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.
The platform needs a small efficiency boost, to reach the levels of the older platform, at least.
Power Factor Rating
The following graph shows the PSU's average power factor reading throughout its operating range with an ambient temperature close to 30 degrees Celsius.
The APFC converter does a good job with both voltage inputs, 115V and 230V.
MORE: Best Power Supplies
MORE: How We Test Power Supplies
MORE: All Power Supply Content
The Alienware AW3423DWF QD-OLED, our best ultrawide gaming monitor, is now only $649 for Cyber Monday
Get the most affordable RTX 4050 laptop for just $599 — The Acer Nitro V 15 plunges to an all-time low this Cyber Monday
WebScreen is a compact webcam-sized AMOLED second screen for those without the room or inclination to use multiple monitors
