Performance Analysis

Even with rigorous and varied professional load testing, it can be hard to tease out meaningful differences between PSUs these days, which is great for consumers to be honest. Reputable brands typically only release units with solid electrical performance, and it’s no different for the RM750.

The critical 12V rail is within one percent of the nominal voltage at all times, including at full load – no complaints there. Ripple along this rail is also well maintained; a peak value of 27.4 mVpp is nothing that anyone but hardcore (i.e. sub-zero) overclockers need to be concerned about.

Average efficiency comes out above 90 percent and is the best result we’ve seen from an 80 Plus Gold-rated unit for a while. That said, it comes out bottom in the maximum load test, even if the differences are minimal, and the low load testing tends to paint most other tested units in a better light. Overall, then, it’s a mixed bag, but the RM750 certainly lives up to its 80 Plus Gold credentials.

The fan turns on at around the 300W load mark, leaving the PSU totally silent below this point. It’s a good few decibels quieter under load than SilverStone’s Essential Gold 750W too, and we can't see many people finding the noise output of this unit to be a problem.

Conclusion

Overall, the RM750 (2019) is a decent power supply considering the £90 asking price. It doesn’t stand out in any meaningful way, with bland aesthetics matched by electrical performance that is solid but not outstanding. If that sounds critical, we don’t mean it to be, as the RM750 (2019) does the job required of it well and for a fair price. The slightly cheaper internals on the refresh are a shame from an enthusiast's persepective, but ultimately performance is maintained. The new 10-year warranty is certainly a big bonus, and the cable selection is great too.

The new RM Series is effectively the RMi Series with fewer bells and whistles. It’s priced accordingly and is a safe buy.