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Compact Micro PS3 unit, matte metal casing, single fan grille, standard ATX connector layout

Solid Gear

Solid Gear SDGR-MPS3-300 300 W Micro PS3 power supply

SKU CH-PEFA-N7DXV MPN SDGR-MPS3-300

A Micro PS3 ATX unit delivering 300 W with passive PFC, a 20+4 pin main connector, single +12 V rail, three SATA power connectors and over-voltage plus overload protection

  • Max wattage300 W
  • Modular cablingNo
  • Fan configuration1
  • Power factor correctionPassive
  • Main power connector20+4 Pin
  • 12V railsSingle
  • Delivers 300 W for budget builds
  • Single +12 V rail supplies 15 A to CPU and GPU
  • 20+4 pin main connector fits modern motherboards
  • Three SATA power connectors support multiple drives
  • Passive PFC accepts 110-120 V and 220-240 V input

Solid Gear Micro PS3 300 W unit

The Solid Gear SDGR-MPS3-300 is a Micro PS3 form-factor power supply rated at 300 W. It fits compact chassis that accept the Micro PS3 standard and provides a single +12 V rail. The unit uses passive power-factor correction and a single cooling fan.

Suits small-form-factor desktop builds

Builders assembling a low-power system in a Micro PS3 case will find the connector set adequate for a basic motherboard, CPU and a few drives. Systems that require higher wattage, multiple +12 V rails or modular cabling should consider a different power supply.

Single +12 V rail rated at 15 A

The +12 V output delivers up to 15 A, which determines how much power is available for the processor and graphics card. If the combined load of those components exceeds this current, the unit will not support the build.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $48.99
Cheaper than about 91% of the 10,869 comparable items (median $142.99).
Max wattage 300 W
Lower than about 92% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSolid Gear
Model nameSDGR-MPS3-300
Product typeMicro PS3
Ports & slots
SATA power connectors3
12V power connector1 × 4 Pin ATX 12 V
Floppy connector1
Peripheral connector3
Power
Max wattage300 W
Modular cablingNo
Power factor correctionPassive
Main power connector20+4 Pin
12V railsSingle
Overvoltage protectionYes
Overload protectionYes
Supply voltage110–120 V / 220–240 V
Rated input current10A @ 115 V, 6A @ 230 V
+3.3V max. current12A
+5V max. current14A
+12V1 max. current15A
+5VSB max. current2A
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Size & build
Top fans size80 mm
In the box
Fans total quantity1
Environment & compliance
Over temperature protectionYes
More details
Fan configuration1
Over load protectionYes
Short circuit protectionYes

Questions about this item

How much heat and noise does the 300 W unit with passive PFC and a single fan produce when running all day?

The supply uses passive PFC and one fan, so it will draw up to 10 A at 115 V or 6 A at 230 V and exhaust heat through that single fan; expect typical office-level noise rather than silent operation.

Which cables and connectors must my build already provide for this non-modular 300 W PSU to work?

It comes with a fixed 20+4 pin main connector, one 4-pin ATX 12 V CPU plug, three SATA power leads, three 4-pin Molex leads and one floppy lead; your motherboard and drives must accept those exact plugs.

Will the single +12 V rail rated at 15 A support an older graphics card that needs a 6-pin PCIe connector?

The unit only provides a 4-pin ATX 12 V connector and Molex leads; it has no 6-pin PCIe plug, so an older card requiring that connector cannot be powered directly.

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