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be quiet! Pure Power 12 750W (BP003EU) vs Corsair CX650 650W 80 PLUS Bronze ATX PSU

Researched, not hands-on tested.How we review ›

all judged against power supplies at a similar price

The be quiet! Pure Power 12 750W (BP003EU) scores 6.6/10 overall, ahead of the Corsair CX650 650W 80 PLUS Bronze ATX PSU at 5.3/10.

The be quiet! Pure Power 12 750W (BP003EU) leads on efficiency, noise and warranty.

They score the same on quality and protections and cabling and connectors.

The biggest difference is warranty, where the be quiet! Pure Power 12 750W (BP003EU) scores 10/10 to the Corsair CX650 650W 80 PLUS Bronze ATX PSU's 6/10.

be quiet! Pure Power 12 750W (BP003EU)

6.6/10verdict: good, not the best

This is a 750W ATX 3.1 power supply for a single-GPU desktop where low noise and a long warranty matter more than cable tidiness. It suits builders who want a native 12V-2x6 connector and Gold efficiency and are happy with fixed cabling. It is a poor fit for multi-GPU builds or cases that need a minimal cable count.

Typically about £89.99 in the UK when we researched itSearch Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Corsair CX650 650W 80 PLUS Bronze ATX PSU

Corsair CX650 650W 80 PLUS Bronze ATX PSU

5.3/10verdict: good, not the best

The Corsair CX650 is a 650W ATX power supply with fixed cabling and 80 PLUS Bronze efficiency. It suits a single-GPU desktop or a small server with a few drives. It is less suited to builds that need modular cabling, a native 12V-2x6 cable or high efficiency.

Typically about £44.99 in the UK when we researched itSearch Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightbe quiet! Pure Power 12 750W (BP003EU)Corsair CX650 650W 80 PLUS Bronze ATX PSU
Quality and protections30%6/106/10
Efficiency20%7/105/10
Cabling and connectors20%4/104/10
Noise15%7/105/10
Warranty15%10/106/10
Overall6.6/105.3/10

Specifications

Specbe quiet! Pure Power 12 750W (BP003EU)Corsair CX650 650W 80 PLUS Bronze ATX PSU
Rated output (W)750W continuous, 820W peak; single 12V rail, 62.5A on +12V1, max combined 12V 750W650 W continuous
Efficiency rating (80 Plus or Cybenetics)80 PLUS Gold, up to 92.8%80 PLUS Bronze
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATX, ATX 3.1 compliant, PCIe 5.1 compatibleATX (ATX12V v2.31; ATX 3.x not stated)
Modular cabling (fully, semi or non-modular)Not modular (fixed cables)No (non-modular)
Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count)1 x PCIe 5.1 12V-2x6 (600W), 3 x PCIe 6+2-pin, 1 x 20+4-pin motherboard, 1 x P8 (8-pin CPU), 1 x P4+4 CPU, 6 x SATA, 1 x PATA, 8 cables total2 PCIe 8-pin (6+2) on one cable; 3 SATA on one cable; 2 PATA 4-pin; no 12V-2x6 or 12VHPWR
Fan size and zero-fan mode120mm be quiet! rifle bearing fan, 1800 rpm max, 4-pole motor; 8.7 dB(A) at 10% and 20% load, 8.8 dB(A) at 50%, 22.5 dB(A) at 100%120mm sleeve bearing, thermally controlled; zero-RPM mode not stated
Warranty (years)10 years5 years

Strengths and weaknesses

be quiet! Pure Power 12 750W (BP003EU)

  • + 10-year warranty
  • + Native 12V-2x6 cable, ATX 3.1
  • + Quiet fan: 8.7 dB(A) up to 20% load
  • − Non-modular, fixed cables
  • − Only three PCIe 6+2-pin connectors
  • − 68.4% efficiency at 2% load

Skip it if:

  • Builders who want fully modular cabling to keep a small case tidy.
  • Anyone running several graphics cards that need many 8-pin PCIe connectors.
Read the full be quiet! Pure Power 12 750W (BP003EU) review ›

Corsair CX650 650W 80 PLUS Bronze ATX PSU

  • + 5-year warranty
  • + 12V ripple of 48.6 mV at full load, within the limit
  • + Compact 125mm body
  • − Non-modular cabling
  • − No 12V-2x6 or 12VHPWR connector
  • − 80 PLUS Bronze efficiency only

Skip it if:

  • Buyers whose graphics card needs a native 12V-2x6 or 12VHPWR cable
  • Anyone wanting modular cabling for a tidy build
  • Builders with many SATA drives or high-efficiency needs for an always-on PC
Read the full Corsair CX650 650W 80 PLUS Bronze ATX PSU review ›

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