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Corsair CX650 650W 80 PLUS Bronze ATX PSU vs Lian Li SP750

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

all judged against power supplies at a similar price

The Lian Li SP750 scores 5.9/10 overall, ahead of the Corsair CX650 650W 80 PLUS Bronze ATX PSU at 5.3/10.

The Corsair CX650 650W 80 PLUS Bronze ATX PSU leads on warranty.

The Lian Li SP750 leads on efficiency, cabling and connectors and noise.

They score the same on quality and protections.

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

Lian Li SP750

Lian Li SP750

5.9/10verdict: good, not the best

The Lian Li SP750 is a 750 W SFX power supply for compact builds that need a fully modular unit with an 80 PLUS Gold rating. It suits builders who want quiet running and flexible braided cables in a small case. It is a weaker fit for anyone who needs a native 12V-2x6 cable or many SATA connectors.

Typically about £109.99 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

CriterionWeightCorsair CX650 650W 80 PLUS Bronze ATX PSULian Li SP750
Quality and protections30%6/106/10
Efficiency20%5/107/10
Cabling and connectors20%4/105/10
Noise15%5/106/10
Warranty15%6/105/10
Overall5.3/105.9/10

Specifications

SpecCorsair CX650 650W 80 PLUS Bronze ATX PSULian Li SP750
Rated output (W)650 W continuous750 W maximum DC output; +12V 744 W; +3.3V/+5V 100 W combined
Efficiency rating (80 Plus or Cybenetics)80 PLUS Bronze80 PLUS Gold
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATX (ATX12V v2.31; ATX 3.x not stated)SFX, 100 x 63.5 x 125 mm (D x W x H)
Modular cabling (fully, semi or non-modular)No (non-modular)Fully modular
Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count)2 PCIe 8-pin (6+2) on one cable; 3 SATA on one cable; 2 PATA 4-pin; no 12V-2x6 or 12VHPWRThree PCIe 8-pin (6+2) outputs; one CPU, two SATA and one peripheral connector listed by manufacturer; no 12V-2x6 or 12VHPWR cable listed
Fan size and zero-fan mode120mm sleeve bearing, thermally controlled; zero-RPM mode not statedOne 92 mm hydraulic-bearing fan; zero-RPM mode until 40% load
Warranty (years)5 years5 years

Strengths and weaknesses

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 ›

Lian Li SP750

  • + Fully modular with braided cables
  • + 80 PLUS Gold; 90.23% efficiency measured at 808 W
  • + Several owners praise quiet operation
  • − No 12V-2x6 or 12VHPWR cable listed
  • − Some owners report fan spinning up at idle
  • − Only two SATA connectors listed

Skip it if:

  • Buyers with a new NVIDIA card who want a native 12V-2x6 cable
  • Builders with many SATA drives who need more than two connectors
  • Anyone who needs a fan that stays fully silent at idle
Read the full Lian Li SP750 review ›

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