essential
Article number: BN303

SYSTEM POWER 9 CM

700W

Proven Reliability and Good Efficiency

be quiet! System Power 9 CM 700W offers renowned be quiet! reliability and quietness for cost-effective and reliable systems.

  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation 
  • Four PCIe connectors for powerful GPUs
  • Temperature-controlled 120mm fan reduces system noise
  • Stand-by drain of less than 0.15 watts
  • 80 PLUS® Bronze efficiency (up to 89%)
  • Semi-modular, high-quality sleeved and flat cables
  • All-in-one cable with S-ATA, HDD and FDD connectors
  • Complete suite of top safety features
  • Meets latest Intel® C6/C7, ErP and Energy Star 6.1 guidelines
  • 3-year manufacturer’s warranty

VERY QUIET OPERATION

Attained by using a high-quality fan

System Power 9 CM 700W is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system.

80 PLUS® BRONZE CERTIFICATION

High operating efficiency

The 80 PLUS Bronze certification is convincing evidence of this PSU’s efficient and power saving operation. It is a remarkable achievement for this class of PSU, realizing an efficiency rating of up to 89%.

HIGH PERFORMANCE FOR YOUR SYSTEM

Proven reliability for CPU and GPU

System Power 9 CM 700W provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with four PCI express connectors for powerful GPUs.

INNOVATIVE DC-TO-DC CONVERSION

Equipped with a wealth of advanced technology

The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards.

SEMI-MODULAR CABLE MANAGEMENT

Total convenience and attractive design for cost-effective systems

System Power 9 CM 700W comes with full high-quality black sleeved cables that add a touch of class to any PC system. Thanks to the semi-modular cable management, cables that serve no purpose in the system are left out.

COMPREHENSIVE PROTECTION

A complete range of safety features

Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.

All models at a glance:

Product Series

General data

ModelSystem Power 9 CM 700W
Continuous power (W)700
Peak power (W)-
Form factorVersion 2.51
Form factor EPS 12VVersion 2.92
Modular Cable management-
TopologyDC/DC
Wire-free design (DC-side)-
Voltage (Vac)200 - 240
Frequency (Hz)50
Input current (A)6
PFCactive
Power factor at 100% load>0.95
Compliant to Intel C6/C7
Power consumption in standby (W)<0.15
Average life time (h / 25°C)100,000
Operating temperature up to (°C)40

Infographics

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Output

12V rails (multi-rail operation)2
12V single rail operation-
Overclocking key-
+3.3V (A)24
+5V (A)15
+12V1 (A)33
+12V2 (A)25
+12V3 (A)-
+12V4 (A)-
+12V5 (A)-
+12V6 (A)-
-12V (A)0.3
+5Vsb (A)3
Max. combined power 12V (W)672
Max. combined power 3.3V + 5V (W)130
Hold-up time at 100% load (ms)17 (@75%)
Power good signal100 - 150ms

Fan / Cooling technology

Fan typeHigh quality fan
+SilentWings-
Motor technology4-pole fan motor
Bearing technologySleeve
Fan size (mm)120
Max. fan speed (rpm), temperature-dependent2100
Temperature control for case fans-
dB(A) at 20% load9.7
dB(A) at 50% load14.1
dB(A) at 100% load31.7

Protection

OCP (over current protection)
OVP (over Voltage protection)
UVP (under Voltage protection)
SCP (short circuit protection)
OTP (over temperature protection)
OPP (over power protection)
SIP (Surge & Inrush Protection)

Safety certification

CE
CB
TÜV
FCC-
cRUus-
cTUVus-
RCM (Australia)
BSMI-
CU (Russia)
CCC-

Eco / Efficiency

80 PLUS certificationBronze (230V EU internal)
Efficiency (%) at 230V, 20% load88
Efficiency (%) at 230V, 50% load89
Efficiency (%) at 230V, 100% load86

Environmental directives

Energy Star6.1
ErP
WEEE
RoHs

Cables / Connectors

Nvidia® SLI (RTX 3090) ready-
Cable managementSemi-modular
Sleeved cablesSleeved cables
Flat cablesPCIe / drives
Cable length to mainboard (cm)55
Cable length to first connector (cm)50
Maximum cable length (cm)103
All-in-one cable (SATA/PATA/FDD)
No. of cables7
ATX-Motherboard (20+4-pin)1
P8 (CPU)-
P4+4 (CPU)1
P4 (CPU)-
PCI-e 6-pin (GPU)-
PCI-e 6+2-pin (GPU)4
PATA2
SATA10
FDD (Floppy)1
External fan connectors-

Casing

Dimensions without cable (L x W x D), (mm)140 x 150 x 86
Weight (kg)1.69
ColorBlack

Accessories

Thumb screws-
Screws
Cable ties-
Velcro cable ties-
Box/Bag for PSU/Cables-
User manual languagesDE, EN, ES, FR, PL, RU
OCK slot bracket with switch / OCK jumper-
SFX-to-ATX adapter bracket-

Service

Warranty (Years)3
Express replacement service in first year-
International hotline / free of charge✓ / DE, FR

Logistics data, RRP

Article numberBN303
EAN code4260052187241
Dimensions, package (L x W x H), (mm)268 x 97 x 195
Gross weight, package (kg)2.44
Pieces per packaging unit6
Dimensions, shipping box (L x W x H), (mm)215 x 311 x 556
Gross weight, shipping box (kg)15.34
RRP (€)84.90

Upgrade Check

You are already using a be quiet! power supply and want to upgrade your system with a new SYSTEM POWER 9 CM | 700W ? Check here which cables are compatible and don't need to be replaced.

Previous power supply

SYSTEM POWER 9 CM | 700W
Article number: BN303

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