This document discusses different types of switched mode power supplies (SMPS) used in computers. It describes three main types: AT SMPS, which had a 12-pin connector and were used in older Pentium CPUs; ATX SMPS with a 20-pin connector used in later Pentium and AMD CPUs; and BTX SMPS with a 24-pin connector and SATA power connectors used in modern dual-core, quad-core, and Intel/AMD CPUs. It also discusses semi-modular, full-modular, and non-modular SMPS designs as well as wattage recommendations and 80 Plus power supply efficiency standards.

1. Different Types of SMPS
(Switched Mode Power
Supply )
SMPS full form is Switching Mode Power Supply. It is the main power supply
to power each and every component of the computer or it converts the main
power supply 230volts to 12volts, 5volts, 3volts and distributes to all
components of the computer.
Three Types of SMPSs are
AT SMPS
ATX SMPS
BTX SMPS

2. AT SMPS
• 1. AT SMPS:
• AT stands for Advanced Technology. These are all old SMPSs. They
had a 12pin power connector, this is called as AT power connector.
They were used in Pentium-I, Pentium-MMX, Pentium-II, and
Pentium-III CPUs.
•

3. ATX SMPS
• ATX SMPS:
• ATX stands for Advanced Technology extended. They had a 20pin
Power connector, which is called as ATX power connector. They were
used in Pentium-III, Pentium-IV, and AMD CPUs.

4. BTX SMPS
• BTX SMPS
• BTX stands for Balanced Technology extended. They have a 24pin
Power connector, which is also called as ATX power connector. It has
15pin SATA power connectors. They are used in Dual-core, core2duo,
Quad-core, i3, i5, i7, and latest AMD CPUs.

5. SMPS types
• semi Modular smps
• Full Modular smps
• Non Modular smps

6. Semi Modular smps

7. Full Modular smps

8. Non Modular smps

9. • https://shrinkme.io/Wattage_Calculator
• Normal pc 450 watts
• mid range 550 to 605 watts
• high range system 750 to 1000 watts (1.5 kva ups only use)

10. power supply performance
• Non 80 plus power supply - 450 watt, its (80% low)
• 80 plus power supply - 550 watt ,its (80%)
• 80 plus bronze power supply - 650 to 700 Watt , its (82% to 85%)
• 80 plus silver power supply – 650 watt + 12 % extra , its (85%,88%)
• 80 plus gold power supply -750 watt its (88% to 90%)
• 80 plus platinum power supply – (89% to 92%)
• 80 plus titanium power supply - 1200 Watts its(90% to94%)
MAX. DC OUTPUT 750W
COMBINED +3.3V &
+5V
100W
COMBINED +12V 744W
INPUT VOLTAGE 100 – 240 Vrms

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