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Black SFX-L power supply unit with modular cable sockets and a 120 mm fan grille

Silverstone

Silverstone EX1200R-PL 1200 W SFX-L 80 PLUS PLATINUM power supply

SKU CH-0FQ2-H9E7H MPN EX1200R-PL

SFX-L 1200 W fully modular PSU with 80 PLUS Platinum efficiency and a single 120 mm FDB fan

  • Max wattage1200 W
  • Power efficiency89% ~ 91% overall efficiency
  • Modular cablingFull Modular
  • Fan configurationSingle 120 mm FDB bearing fan
  • Power factor correctionActive PFC(PF>0.9 at full load)
  • Main power connector20+4Pin
  • Delivers 1200 W for demanding builds
  • 80 PLUS PLATINUM efficiency saves energy
  • SFX-L design fits compact cases
  • Full modular cables reduce clutter
  • 100 000 hour MTBF ensures longevity

SFX-L 1200 W Platinum power supply

This SFX-L unit delivers 1200 W of continuous power for compact systems that demand high output. It fits builds limited to 130 mm depth while providing a fully modular cable set. The single 120 mm FDB fan handles thermal loads at this wattage tier. It targets small-form-factor workstations and high-end gaming rigs.

80 PLUS Platinum efficiency limits

The 80 PLUS Platinum certification guarantees 89% to 91% overall efficiency across typical loads. Active PFC maintains a power factor above .9 at full load, reducing strain on the mains supply. Input range spans 90 to 264 V at 47 to 63 Hz for worldwide compatibility. These figures define the practical ceiling for wall-socket draw and heat output.

Single +12 V rail rated at 100 A

The +12 V rail supplies up to 100 A, which is the decisive spec for modern GPU and CPU power delivery. Minor rails provide 20 A at 3.3 V, 20 A at 5 V, 3.0 A at 5 VSB and .3 A at -12 V. Protection includes OCP, OPP, OVP, SCP and OTP. MTBF is rated at 100000 hours.

How it compares

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

Price $281.99
Pricier than about 75% of the 10,869 comparable items (median $142.99).
Max wattage 1200 W
Higher than about 90% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSilverStone
Model nameEX1200R-PL
Product colorBlack
Product typeSFX-L
Ports & slots
Output type20A@+3.3 V, 20A@+5 V, 100A@+12 V, 3.0A@+5VSB, 0.3A@-12 V
Connection types1 × 24 / 20-Pin motherboard connector
2 × 8 / 4-Pin EPS / ATX 12 V connector
4 × 8 / 6-Pin PCIe connectors
1 × 12+4-Pin 12 V-2 × 6 connector
8 x SATA connector
3 × 4-Pin Peripheral connector
1 × 4-Pin Floppy adapter connector
Power
Max wattage1200 W
Power efficiency89% ~ 91% overall efficiency
Modular cablingFull Modular
Power factor correctionActive PFC(PF>0.9 at full load)
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS PLATINUM Certified
Built-in protectionOver Current Protection
Over Power Protection
Over Voltage Protection
Short Circuit Protection
Over Temperature Protection
Supply voltage90–264 V
AC input frequency47–63 Hz
Size & build
Product dimensions125 × 63.5 × 130 mm
Product weight4.61 lb (2.09 kg)
Compatibility
PSU length limit130 mm
More details
Fan configurationSingle 120 mm FDB bearing fan
Mean time between failures100,000 h

Questions about this item

Is this 1200 W SFX-L unit the only capacity available in the EX1200R-PL series?

Yes, the EX1200R-PL is offered only as a 1200 W model in the SFX-L form factor.

What does the 80 PLUS PLATINUM rating mean for actual efficiency inside my PC?

The certification guarantees 89 % to 91 % overall efficiency across typical loads, so less power is wasted as heat.

What does the 12V-2x6 connector support in practice?

The single 12V-2x6 cable provides a native 12+4-pin connection for modern graphics cards without adapters.

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