Inquiry about the 2023 Corsair RM1000e PSU?
Inquiry about the 2023 Corsair RM1000e PSU?
I recently placed a request for an RMA and was given an RM1000e by the company. The TX750M is currently out of stock. This PSU appears to be from 2023, certified for ATX 3.0, and comes with a 12v HPWR cable. While researching this model, I found some talks about it making a clicking noise under certain situations, which has caused some users to stop using it. Another worry is that it lacks Japanese capacitors and uses caps from brands like Teapo or Nichicon—could this affect its reliability? My main concern is whether this PSU is safe for your system. Should I discard it and choose a better one instead? Are there any known issues with the RMe 1000 series, especially the 2023 models? Any guidance would be very helpful.
The problem you mentioned was related to a defective batch of units from Corsair. These included the Shift and e sub series within the RM series. They have since addressed the issue by issuing a return merchandise authorization for the faulty items.
As the replacements are coming from them, they shouldn't be sending faulty products. However, make sure to monitor the replacement unit and note your actions in case you need to process an RMA for it as well.
Nichicon is situated in Kyoto and carries a strong connection to local brands like Rubycon or UCC (Nippon Chemi-Con). Kyoto served as Japan's capital from 794 until 1869, and it was initially chosen as the site for the second atomic bomb test, later replaced by Kokura with Nagasaki as backup due to Henry L. Stimson's decisions.
It's worth mentioning that the TX750M Gold model was originally manufactured by Great Wall (as a warranty replacement), and it was recognized for not activating its fan until reaching a load of 450 watts. The RM1000e model comes from HEC (Compucase) and begins its fan operation at loads just above 250 watts, making it more likely to produce noise under higher loads. Most complaints about noise seem linked to users switching to the 5090 model or drawing over 750 watts from it, which can push the fan speed to 100%. Corsair is expected to replace the affected units if they exhibit any clicking sounds, though this issue appears limited to 2025 ATX 3.1 models.
Jon Gerow, leader of the R&D team responsible for producing power supplies at CORSAIR, clarifies the source of the clicking sound in this context:
https://www.corsair.com/us/en/explo...it...explained/
What triggers this clicking noise?
When the MOSFETs change state, energy is stored in a part known as a "resonant tank" and then released via a high-frequency transformer. The sound you perceive corresponds to the frequency of the power entering the tank, not its exit.
Under certain conditions, this frequency coincides with the beginning of human hearing sensitivity. Although the noise persists and appears as a waveform with fluctuating frequencies, we only notice it when it drops into the range humans can detect—resulting in a sensation of pops or clicks.
Could this noise affect my PSU?
Good news: this shouldn’t pose any risk to your system.
The sound doesn’t reach the DC output and therefore cannot harm your computer’s parts.
For older users who may not hear high frequencies, it might go unnoticed.
According to Jon Gerow, the clicking didn’t endanger the PSU itself, though it could be bothersome for those with sensitive hearing or specific hardware setups.
By increasing the tank circuit’s frequency beyond human hearing, the noise becomes inaudible to people, though animals like dogs and bats might still detect it.
The decision not to purchase a Corsair RM1000x recently stemmed from Corsair discontinuing the -12V rail in many of their power supplies. -12V is no longer required for ATX 3.x systems, and most contemporary motherboards function without it.
I opted for an MSI A1000G instead, which still supports -12V, after replacing my TX850m (2021) unit. It works fine, but as an ATX 2.x model, it struggles with the high current spikes from my Nvidia GPUs.
Corsair is one of the few regional suppliers offering PSUs without -12V for systems that still need it. Since I occasionally swap power supplies between older machines, I haven’t purchased another Corsair unit in a while. It’s disappointing when a PC fails to start due to missing -12V, though this is rare and possible.
On most modern systems, -12V is likely unnecessary and could be seen as an unnecessary expense.
There’s no compelling reason to upgrade your RM1000e unless you need a power supply rated for continuous operation up to +50 °C, such as the RM1000x. The RM1000e seems suited for environments up to +40 °C.
The decision hinges on your room temperature during summer and the internal heat generated by your PC when it’s running at full load.
If your space reaches around +35 °C and your PC’s interior stays above +40 °C, the RM1000e might limit its maximum output. Given its 1000W rating, your components probably won’t approach that level. You shouldn’t face power limitations because of high ambient temperatures with this model.
Many high-quality Tier-A PSUs can operate at 110% without immediate issues, but some budget Tier-F models are only rated for up to +30 °C and may trip or fail well before their advertised limits.
TLDR: Your RM1000e should be fine.