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Compare Lian Li SP Platinum 1000W White vs Cooler Master MasterWatt 550W

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  2. Power Supplies
  3. Lian Li SP Platinum 1000W White 🆚 Cooler Master MasterWatt 550W
The main differences between Lian Li SP Platinum 1000W White and Cooler Master MasterWatt 550W are in Wattage, Modular, Efficiency and PCI-Express 16 Pin 12VHPWR Connectors.
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Lian Li SP Platinum 1000W White SFX 12V-2x6 Connectors ATX 3.1 & PCIE 5.1 Fully Modular 105°C Capacitors 10 Year Warranty (SP1000P.W)
Lian Li SP Platinum 1000W White
Cooler Master MasterWatt 550W Semifanless Modular 80 PLUS Bronze
Cooler Master MasterWatt 550W
Prices
(Change region)
In Stock
$184.99
Last updated 21 minutes ago.
In Stock
Free shipping
$184.99
In Stock
$184.99
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Prices
(Change region)
Out of Stock
Free shipping
$67.13
Out of Stock
Free shipping
$79.99
Out of Stock
+ $3.99 Shipping
$84.99
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Brand
Lian Li
Brand
Cooler Master
Model
SP1000P.W
Model
  • MPX-5501-AMAAB-US
  • MPX-5501-AMAAB-UK
  • MPX-5501-AMAAB-AU
  • MPX-5501-AMAAB-EU
Release Date
📅 November 2025
Release Date
📅 September 2017
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
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Price history
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Compatible PC parts
Graphics Cards ► Cases ►
Compatible PC parts
Graphics Cards ► Cases ►
Wattage
1000 W
Wattage
550 W
Type
SFX
Type
ATX
Modular
Full
Modular
Semi
Efficiency
80+ Platinum
Efficiency
80+ Bronze
Output
-
Output
+3.3V@20A, +5V@20A, +12@45.8A, -12V@0.3A, +5VSB@3A
PCI-Express 16 Pin 12VHPWR Connectors
1
PCI-Express 16 Pin 12VHPWR Connectors
0
PCI-Express 12 Pin Connectors
0
PCI-Express 12 Pin Connectors
0
PCI-Express 6+2 Pin Connectors
3
PCI-Express 6+2 Pin Connectors
2
PCI-Express 6 Pin Connectors
0
PCI-Express 6 Pin Connectors
0
EPS Connectors
2
EPS Connectors
1
SATA Connectors
5
SATA Connectors
6
Molex Connectors
2
Molex Connectors
4
Length
100 mm
Length
140 mm

Comparison and key differences summary

Reasons to buy the Lian Li SP Platinum 1000W White:

  • Newer Product, it was released around 8 years later
  • +450 Watts available
  • Fully modular power supply
  • Better 80 Plus efficiency
  • +1 PCI-Express 6+2 Pin connectors available
  • +1 EPS connectors available

Buy now

Reasons to buy the Cooler Master MasterWatt 550W:

  • 64% cheaper, you can save $117.86
  • +1 SATA connectors available
  • +2 Molex connectors available

Buy now

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