be quiet! Straight Power E9 power supply unit 400 W 20+4 pin ATX ATX Black
- Wattage
- 400 W
- Efficiency rating
- 80 PLUS Gold
- Depth
- 160 mm
- Width
- 150 mm
- Height
- 86 mm
- Weight
- 2240 g
- Purpose
- PC
- Fan speed
- 800
- Hold time
- 19
Overview
The be quiet! Straight Power E9 power supply unit 400 W 20+4 pin ATX ATX Black features 400 W output, 80 PLUS 80 PLUS Gold efficiency, a 135 mm fan and Active cooling. Full verified specifications are listed below.
Compatibility
Compatibility data is automatically generated. Always verify critical specs before purchase.
Technical Specifications
Physical
5- Depth
- 160 mm
- Width
- 150 mm
- Height
- 86 mm
- Weight
- 2240 g
- Colour
- Black
General
51- Purpose
- PC
- Fan speed
- 800
- Hold time
- 19
- Efficiency
- 92.9
- Peak power
- 450
- ATX version
- 2.31
- Noise level
- 14.6
- Cabling type
- Non-Modular
- Power factor
- 0.99
- Certifications
- CE, CB, TÜV, Semko (S)
- Input current
- 3 - 6
- AC input voltage
- 100 - 240
- AC input frequency
- 50 - 60
- Bearing type
- FDB
- Combined power (+5V)
- 120
- Combined power (+12V)
- 384
- Combined power (+3.3V)
- 120
- Compliance certificates
- RoHS
- CPU P4 connector (4-pin)
- 1
- Max output current (+5V)
- 17
- Max output current (+12V)
- 32
- Max output current (-12V)
- 0.3
- Power protection features
- Over current,Over power,Over voltage,Overheating,Short circuit,Under voltage
- Max output current (+12V1)
- 18
- Max output current (+12V2)
- 18
- Max output current (+12V3)
- 18
- Max output current (+3.3V)
- 24
- Max output current (+5Vsb)
- 3
- Package dimensions (WxDxH)
- 248 x 328 x 102
- Motherboard power connector
- 20+4 pin ATX
- Operating temperature
- 0 - 40
- Eco certifications
- ENERGY STAR
- Floppy drive power connector
- 1
- CPU power connector (4+4 pin)
- Yes
- Maximum input current (@110V)
- +12V1,+12V2,+12V3,+3.3V,+5V,+5Vsb,-12V
- Noise level (quiet mode, 50%)
- 13.8
- Noise level (silent mode,
- 13.7
- Number of SATA power connectors
- 5
- MTBF
- 300000 h
- Noise level (full-load mode, 100%)
- 14.6
- Power Factor Correction (PFC) type
- Active
- Power supply unit (PSU) form factor
- ATX
- PCI Express power connectors (6-pin)
- 1
- PCI Express power connectors (6+2 pin)
- 1
- Peripheral (Molex) power connectors (4-pin)
- 4
- buildcores_verified
- 1
- buildcores_opendb_id
- 828fde9c-cc6b-43c2-9460-8a3b0187951b
- buildcores_category
- PSU
- length_mm
- 160
- wattage
- 400
- form_factor
- ATX
Power
2- Wattage
- 400 W
- Efficiency rating
- 80 PLUS Gold
Cooling
3- Cooling type
- Active
- Fan size
- 135
- Number of fans
- 1
Logistics & Packaging
1- Package weight
- 2650 g
Show
Market Value History
Price history table
| Date | Price |
|---|---|
| 2015-11-04 | $134.83 |
| 2021-11-24 | $119.75 |
| 2021-12-14 | $118.86 |
| 2021-12-20 | $118.46 |
| 2021-12-29 | $120.18 |
| 2022-01-03 | $121.04 |
| 2022-01-12 | $121.97 |
| 2022-01-18 | $122.24 |
| 2022-01-26 | $120.70 |
| 2022-01-31 | $119.85 |
| 2022-02-11 | $121.03 |
| 2022-02-14 | $121.34 |
| 2022-02-23 | $121.79 |
| 2022-02-28 | $120.14 |
| 2022-03-08 | $118.62 |
| 2022-03-17 | $116.84 |
| 2022-03-21 | $118.28 |
| 2022-03-29 | $118.38 |
| 2022-04-05 | $118.33 |
| 2022-04-14 | $117.04 |
| 2022-04-18 | $117.23 |
| 2022-04-28 | $113.15 |
| 2022-05-03 | $113.35 |
| 2022-05-09 | $111.66 |
| 2022-05-16 | $110.28 |
| 2022-05-24 | $112.88 |
| 2022-05-31 | $114.21 |
| 2022-06-06 | $114.23 |
| 2022-06-13 | $111.58 |
| 2022-06-21 | $110.84 |
| 2022-06-27 | $110.99 |
| 2022-07-05 | $110.08 |
| 2022-07-12 | $108.79 |
| 2022-07-18 | $107.53 |
| 2022-07-26 | $109.10 |
| 2022-08-02 | $110.93 |
| 2022-08-08 | $110.70 |
| 2022-08-18 | $109.95 |
| 2022-08-23 | $108.05 |
| 2022-08-31 | $106.58 |
| 2022-09-07 | $105.33 |
| 2022-09-12 | $104.29 |
| 2022-09-22 | $104.68 |
| 2022-09-26 | $98.65 |
| 2022-10-03 | $101.09 |
| 2022-10-15 | $103.10 |
| 2022-10-18 | $101.78 |
| 2022-10-25 | $103.13 |
| 2022-11-01 | $106.80 |
| 2023-01-27 | $113.74 |
| 2023-02-17 | $110.72 |
| 2023-03-16 | $111.99 |
| 2023-03-23 | $112.86 |
Customer Reviews & Feedback
Based on 66 verified customer reviews on Amazon US.
Review Verification
Hardware Quest synchronizes these ratings daily with Amazon to reflect real buyer experiences, build quality, and long-term reliability.
Product lifecycle
Status uncertainAvailable catalog signals are incomplete, so current lifecycle status cannot be confirmed.
Similar hardware
POWER SUPPLIESNo close alternatives in this category yet. Browse the category.