Following on from our recent review of the Corsair RM1000e, today we take a look at the 850 watt version in the new range – the RM850e. This is another fully modular power supply with native 12v-2×6 connectors to power the latest graphics cards. These are not the Corsair flagship models so they come with a more limited 7 year warranty.

There are three power supplies in this new range, a 750w, 850w and 1000w unit. The 1000W supply scored well in our testing and you missed that review then head over HERE.

UK prices from Corsair directly indicate that only £10 price difference exists between the 750 watt and 850 watt models, while the 1000W model is £35 more expensive. As we previously mentioned, all models have a 7 year warranty in place which falls some way from the leading 12 years on some of the platinum models we have reviewed lately. This is one of the tradeoffs when you move down a companies product stack but for most people it will be fine.

Key Features:

• Fully Modular PSU: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
• Cybenetics Gold-Certified: Steady power output at up to 90% efficiency, ensuring lower power consumption and cooler temperatures.
• Native 12V-2×6 Connector: Power the latest high-end graphics cards out of the box – no adapter needed.
• Intel® ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting PCIe 5.1 platform withstands 2x transient power excursions from the GPU.
• Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make and connecting the RMe a breeze, even in tight spaces.
• Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
• 105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
• Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
• Zero RPM Fan Mode: For near-silent operation at lower loads.
• The Right Fit: Compact 140mm-long casing ensures an easy fit in modern enthusiast PC cases.
• Resonant LLC Topology with DC-to-DC Conversion: Provides clean, consistent power and ensures better energy-efficiency across a wide range of loads.
• Seven-Year Warranty: Your guarantee of reliable operation for peace of mind through multiple builds.

The post Corsair RM850e ATX 3.1 (2025) PSU Review first appeared on KitGuru.

It has been some time since we tested a be quiet! power supply, so today is quite exciting as we just received a sample of the new Power Zone 2 1000 watt unit. This power supply is a follow on from the original units which released back in 2013, which were incidentally the companies first single rail units. This new fully modular power supply has also adopted a semi passive cooling configuration. It also ships with a 10 year warranty. Time to dive in and see what else has changed.

We have appreciated be quiet! products over the years, they have a certain attention to detail and a focus on engineering quality. Not to say they always get it right, but generally they are a brand we would consider to be in the higher end of the quality bracket. Also, they tend to make some of the best fans on the market which helps massively with coolers and power supplies. This unit adopts one of their new Pure Wings 3 140mm fans.

There are three models in this new Power Zone 2 category. A 750 Watt, an 850 watt and a 1000 watt model. Retail availability of Power Zone 2 is scheduled for January 28th, at a recommended retail price of $189.90/€189.90/£179.99 (1000W), $169.90/€169.90/£159.99 (850W), or $149.90/€149.90/£139.99 (750W). More on this later in the review.

Power Zone 2 1000W Features:

• 80 Plus Platinum and Cybenetics Platinum efficiency.
• Semi Passive zero RPM cooling.
• Pure Wings 3 140mm fan.
• 90 degree angled 12V-2×6 connector and PCIe 5.1/ATX 3.1 compatibility.
• Unique look with mesh design.
• Single +12V rail.
• 10 year manufacturers warranty.

The post be quiet! Power Zone 2 1000W ATX 3.1 (2025) Review first appeared on KitGuru.