With many enthusiasts looking for potent power supplies after the launch of NVIDIA’s top-of-the-line ADA models and the tiresome wrangling over the 12VHPWR connector, be quiet! offers a somewhat cheaper power supply with the Pure Power 11 FM 1000W, which could be a serious alternative for many owners of a GeForce RTX 4090 or RTX 4080 with a current street price of around 150 Euros.
Reason enough for me to once again let my friend Aris from Hardwarebusters have his say (and picture) in this regard on our site as well, because he not only tested this power supply intensively, but also officially certified it accordingly via his company Cybenetics. Since it is also interesting for you for sure, I like to offer him here from case to case also the platform to share his findings with you. And do not forget also his Website and the YouTube channel offer real gems of really well-founded reviews!
The be quiet! Pure Power 11 FM 1000W
The be quiet! Pure Power 11 FM 1000W offers the ATX 2.53 standard and can also be used with the new graphics cards from NVIDIA via adapter or suitable cable. A Radeon RX 7900 XTX is set anyway. So it’s definitely a cheaper alternative to the native ATX 3.0 power supplies if you’re planning on buying an NVIDIA RTX 4090 and pairing it with a powerful CPU, an AMD Ryzen 9 7950x or an Intel 13900K. In the coming months, we’re sure to see more and more ATX v3.0 and PCIe 5.0 capable power supplies, but currently their prices are still off the charts.
And be quiet offers several PSU lines: TFX Power, SFX Power, System Power, Pure Power, Straight Power and Dark Power. I’ve already reviewed a System Power 10 power supply, so it’s time to take a closer look at the flagship of the next series, the Pure Power 11 FM 1000W. The Pure Power 11 series consists of three sublines, one with fixed cables, one with semi-modular power supplies and the last with fully modular members. Instead of having many PSU lines that can confuse the buyer, be quiet! instead chosen this scheme, which in fact looks better.
The Pure Power 11 FM line includes five models ranging from 550W to 1000W, all of which are 80 PLUS Gold certified, use a fully modular cable design and, like all products in this brand, promise quiet operation. The latter remains to be proven. The be quiet! Pure Power 11 FM is certified Gold and 80 PLUS by Cybenetics. It also has a Cybenetics Standard++ noise rating, which doesn’t look that appealing for a be quiet! product. There is no semi-passive operation, which is fine with me as long as the fan is running at low speeds under light load. The fan measures only 120 mm in diameter. Considering the 160mm depth of the case, I can’t understand why they didn’t use a larger fan that would provide the same airflow at lower speeds. Therefore, the output noise would certainly be even lower.
The Pure Power line is located in the be quiet! Portfolio above System Power and below Straight Power and Dark Power. And to spoil a little, the Pure Power 11 FM is the flagship of the line and offers good performance and decent build quality, but not quite low noise, at least at higher loads. When you hear the name “be quiet!”, you expect to find whisper-quiet products under all conditions and nothing less. However, this does not quite seem to be the case with the Pure Power 11 FM 1000, but everything in turn…
| Technical data | |
| Manufacturer (OEM): | HEC |
| Max Power: | 1000W |
| Cybenetics Efficiency: | Cybenetics Efficiency: [115V] Cybenetics Gold (87-89%) |
| 80 Plus Efficiency: | Gold |
| Noise: | Cybenetics Standard++ (30-35 dB[A]) |
| Compliance: | ATX12V v2.53, EPS 2.92 |
| Alternative Low Power Mode support: | yes |
| Power 12V: | 999,6 W |
| Power 5V + 3.3v: | 120 W |
| Power 5VSB: | 15 W |
| Cooling: | 120 mm Rifle Bearing Fan (BQ QF2-12025-HS) |
| Semi-Passive Operation: | No |
| Modular Design: | Yes (Fully) |
| High Power Connectors: | 2x EPS (2x cables), 6x PCIe 6+2 pin (3x cables) |
| Peripheral Connectors: | 0x SATA (3x cables), 2x 4-pin Molex (single cable) |
| ATX/EPS Cable Length: | 500/600 mm |
| Distance between SATA connectors: | 150 mm |
| Distance between 4-pin Molex connectors: | 150 mm |
| In-cable capacitors: | No |
| Dimensions (W x H x D): | 150 mm x 85 mm x 160 mm |
| Weight: | 1.89 kg (4.17 lb) |
| Warranty: | 5 years |
Before we get to the unboxing, the description and the individual tests on the next pages, I also have the test protocol (Cybenetics Report) for you for the readers of igor’sLAB. Here you can find all the important results of the certification. Of course, it cannot replace this review including an explanation of the individual results.
cybenetics_0L1
- 1 - Einführung, technische Daten und Testreport
- 2 - Unboxing, Kabel und Schutzschaltungen
- 3 - Teardown: Topologie, Komponenten, Verarbeitung
- 4 - Load Regulation, Ripple Suppression, Transient Resonse
- 5 - Hold-Up Time, Timings, Inrush-Current
- 6 - Average Efficiency and PF
- 7 - Betriebsgeräusch und Lüfter
- 8 - Zusammenfassung und Fazit
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