be quiet! Pure Power 11 FM 650 W Review – Kill the Noise


Introduction

We would like to thank be quiet! for supplying the review sample.

title

The be quiet! Pure Power 11 FM (Fully Modular) line lists three models of different capacities: 550 W, 650 W, and 750 W. In a previous review, I evaluated the strongest model of the line, and in today’s review, we will take a look at the 650 W variant. The 650 W Gold competition includes the new Corsair RM650x (2021) with the Magnetic Levitation fan, XPG Core Reactor 650, and Seasonic GX-650. The Super Flower Leadex III Gold is also a strong competitor, but the Leadex V has replaced the line. Unfortunately, Super Flower hasn’t sent me any Leadex V samples thus far.

All Pure Power 11 FM (Fully Modular) units are made by CWT, while the other non-modular and semi-modular Pure Power units use FSP platforms. This new CWT platform is only available to be quiet!. It is also a top performer that doesn’t cost a bomb, which has the new Pure Power models achieve high performance-to-price ratios.

The 650 W Pure Power FM unit is fully compliant with the ATX12V v2.52 specification, so it is very efficient under incredibly light and light loads. On top of that, it is compatible with Microsoft’s Modern Standby mode if you find a compatible mainboard. Its cooling is handled by a 120 mm SilentWings fan driven by a highly relaxed fan-speed profile. Lastly, it is rated for up to 40°C continuous full-power delivery.

Specifications

be quiet! Pure Power 11 FM 650W
Features & Specifications
Max. DC Output650 W
PFCActive PFC
Efficiency80 PLUS Gold, Cybenetics Gold
NoiseCybenetics A (20–25 dBA)
ModularYes (fully)
Intel C6/C7 Power State SupportYes
Operating Temperature0–40 °C
ProtectionsOver Voltage Protection
Under Voltage Protection
Over Power Protection
Over Temperature Protection
Over Current Protection
Short Circuit Protection
Cooling120mm rifle bearing fan (BQ QF2-12025-MS)
Semi-passive OperationNo
Dimensions (W x H x D)150 x 85 x 160 mm
Weight1.57 kg (3.46 lb)
ComplianceATX12V v2.53, EPS 2.92
Warranty5-Years
Price at Time of Review (excl. VAT)No information available
be quiet! Pure Power 11 FM 650W
Power Specifications
Rail3.3 V5 V12 V112 V25 VSB-12 V
Max. Power20 A20 A32 A28 A3 A0.3 A
120 W650 W15 W3.6 W
Total Max. Power650 W
be quiet! Pure Power 11 FM 650W
Power Distribution
12V1ATX, PCIe1, PCIe2, Peripheral
12V2EPS, PCIe3, PCIe4

12V2 should be stronger since it has both EPS and two PCIe connectors.



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