Be Quiet! Straight Power 11 (BN643)

Home Power Supply Be Quiet! Straight Power 11

Product Specification

General
Brand : be quiet!
Model : Straight Power 11
Warranty : 5 years
Part Number : BN643
Technical Specification
Form Factor : ATX
Power : 850 W
Effeciency : 80+ Platinum
Color : Black

be quiet! Straight Power 11 Platinum 850W, Fully Modular, Power Supply

  (772 Total Review)

Product Features

  • 80 PLUS Platinum efficiency (up to 94%)
  • Virtually inaudible Silent Wings 3 135mm fan
  • Funnel-shaped fan opening of the PSU case for high airflow intake
  • Wire-free inside the PSU on the DC side for enhanced cooling and longevity
  • Modular cables for maximum build flexibility
Add Product to List
Amazon
Out of Stock · Last Checked At: Oct 20, 2026
View on Amazon
As an Amazon Associate, PC Builder earns from qualifying purchases. Prices and availability are as of the date shown and may change. Affiliate Disclosure

Product Specification

General
Brand : be quiet!
Model : Straight Power 11
Warranty : 5 years
Part Number : BN643
Technical Specification
Form Factor : ATX
Power : 850 W
Effeciency : 80+ Platinum
Color : Black

Similar Products

Alternatives to the Be Quiet! Straight Power 11 at a similar price

View all Power Supplies
Thermaltake PS-TPD-0850NNFAGU-3

Thermaltake PS-TPD-0850NNFAGU-3

  • 850 W
  • 80+ Gold
  • ATX
$99.99 View
Thermaltake SPD-0700NP

Thermaltake SPD-0700NP

  • 700 W
  • 80+
  • ATX
$54.99 View
Thermaltake SMART 600

Thermaltake SMART 600

  • 600 W
  • 80+
  • ATX
$42.99 View
Thermaltake PS-SPD-0500NPCWUS-W

Thermaltake PS-SPD-0500NPCWUS-W

  • 500 W
  • 80+
  • ATX
$39.99 View