Review: This be quiet! PSU is affordable and capable
We’re always recommending between 600W and 800W for the best gaming PC PSU and be quiet! has the Pure Power 11 FM 750W for even the more enthusiast-grade PC builds. This PSU is designed as a more affordable option for PC builders, rocking a 80 PLUS Gold rating for efficiency.
The power supply is one of the most important components of any system as it’s the device that provides power to everything inside (and outside) the chassis. Cheaping out on the PSU can risk system instability, as well as the rare potential for a system failure whereby you may need to replace a CPU or graphics card. It’s vital you choose a PSU from a reputable brand.
be quiet! is one such vendor that we continue to recommend for power supplies, cases, and processor cooling. Let’s see how the Pure Power 11 FM 750W fares with a powerful Ryzen CPU and NVIDIA GeForce RTX 3070 Ti GPU.
be quiet! Pure Power 11 FM
Bottom line: be quiet!’s Pure Power 11 FM series is a great option for anyone looking to build a clean PC with silent performance and clean power delivery. Even if you’re eyeing up NVIDIA’s latest 30-series GPUs, this PSU will be a solid choice.
The Good
- Great value
- Choice of capacities
- 80 PLUS Gold efficiency
- Powerful dual 12V rail
- High-quality components
The Bad
- Weaker warranty than competition
be quiet! Pure Power 11 FM: Price and availability
Source: Rich Edmonds / Windows Central
be quiet! Pure Power 11 FM: Tech specs
- Capacity: 700W, 750W, 1000W
- Dimensions: 160mm x 150mm x 86mm
- Type: Modular
- Fan: 135mm, fluid bearing
- Efficiency rating: 80 PLUS Gold
- Voltage regulation: ±%
- PCIe connections: 4
- Operating temp: Up to 40C (104F)
- Safety: OCP, OVP, UVP, SCP, OTP, OPP
- Warranty: Five years
- Manufacturer: be quiet!
be quiet! Pure Power 11 FM: What’s good
Source: Rich Edmonds / Windows Central
Regardless of which PSU you choose from be quiet!, it’ll be more than capable of powering even high-end systems. This power supply has an 80 PLUS Gold rating, which means it’s 90% efficient at 20% load, 94% efficient at 50% load, and 89% efficient at 100% load. Heat loss is the primary cause for lower efficiency and be quiet!’s design ensures that as much power input is converted as possible.
Load | 80 PLUS Bronze | 80 PLUS Silver | 80 PLUS Gold | 80 PLUS Platinum | 80 PLUS Titanium |
---|---|---|---|---|---|
20% | 85% | 87% | 90% | 92% | 94% |
50% | 88% | 90% | 92% | 94% | 96% |
100% | 85% | 87% | 89% | 90% | 94% |
- 1x 24/20-pin ATX (550mm)
- 2x 8/4-pin EPS/ATX 12V (600mm)
- 2x 8/6-pin PCIe (500mm/150mm)
- 1x SATA/MOLEX (500mm/150mm/150mm/150mm)
- 1x SATA (500mm/150mm/150mm/150mm)
- 1x SATA (500mm/150mm/150mm)
The fan is almost silent at low load and while be quiet! didn’t work in a zero fan mode, you will struggle to notice any noise terminating from the PSU unless you really push the system hard. In terms of performance, we didn’t notice much in terms of fluctuations while pushing the PSU hard in demanding tests.
With an AMD Ryzen 9 5950X CPU and NVIDIA GeForce RTX 3070 Ti GPU, we struggled to spot anything out of the ordinary. be quiet! Pure Power 11 FM 750W adheres to the ATX spec for voltage regulation and you’ll not encounter any issues in terms of performance or reliability.
be quiet! Pure Power 11 FM: What’s not good
Source: Rich Edmonds / Windows Central
be quiet! Pure Power 11 FM: Competition
Source: Harish Jonnalagadda / Windows Central
be quiet!’s own Straight Power 11 750W PSU can be bought for around $30 more and has an 80 PLUS Platinum rating, the next step up from Gold. There are various modular PSUs available and none of them would be a “wrong” choice. It all comes down to the required power output, desired warranty coverage, and price.
be quiet! Pure Power 11 FM: Should you buy it?
Source: Rich Edmonds / Windows Central
You should buy this if …
- You need a reliable PSU for a gaming PC
- You plan on using the latest graphics cards
- You plan on overclocking your PC
You shouldn’t buy this if …
- You want to build a multi-GPU system
- You want to use enthusiast hardware
- You want a decade-long warranty
Choosing a reliable power supply in this day and age is an easy process. So long as you spend at least $50 on a capable 500W or higher PSU from a reputable brand, you’ll be golden (pun not intended). The Pure Power 11 FM with its 80 PLUS Gold efficiency rating is an excellent choice for most PC builds, even if you plan on using the latest AMD or NVIDIA graphics cards.
be quiet!’s Pure Power 11 FM is an excellent power supply and one of the best PSUs you can buy. So long as you don’t need more than 750W for more advanced PC builds and enthusiast overclocking, this little unit will provide ample clean power to all your components.
The company also makes amazing fans and the one used inside this PSU is silent, even when the PC is under a high load. It’s not the most efficient PSU around, nor will it win any battles against more expensive options, but for the price, this is a solid choice for gaming PCs.
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