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Silver rectangular ATX power supply unit with modular cable ports and 135mm fan grille

Silverstone

Silverstone SST-ST1100-TI 1100 W Titanium power supply

SKU CH-8EMT-769QP MPN SST-ST1100-TI

Delivers 1100 W through a single +12 V rail with 80 PLUS Titanium efficiency in a compact 180 mm depth

  • Max wattage1100 W
  • Power efficiency90% ~ 94% at 10% ~ 100% loading
  • Fan configuration1 × 135 mm silent fan
  • Power factor correctionActive
  • Main power connector20+4Pin
  • 12V railsSingle
  • 80 PLUS Titanium certified for 90 to 94 percent efficiency
  • Single +12V rail delivers up to 92 amps for high-end components
  • 100 percent modular cables simplify installation and cable management
  • 135 mm fan with semi-fanless operation keeps noise low
  • All Japanese capacitors ensure stable output at 50 degree operating temperature

SilverStone 1100 W Titanium PSU

The SilverStone SST-ST1100-TI is an ATX12V power supply rated for 1100 W continuous output. It carries 80 PLUS Titanium certification and uses all Japanese capacitors for stable delivery. The fully modular cable set includes two EPS connectors, eight PCIe 6+2-pin connectors and sixteen SATA connectors. A compact 180 mm depth helps it fit tight builds.

Sustained load behaviour

The unit is specified for 24/7 operation at up to 50 °C ambient temperature with a single +12V rail rated at 92 A. Efficiency stays between 90 % and 94 % from 10 % to 100 % load, reducing waste heat during long sessions. The 135 mm fan runs in a semi-fanless mode at low load and spins up only when needed. Voltage regulation is held within ±3 % with low ripple and noise.

Pre-purchase checks

Verify that your case can accommodate a 180 mm deep power supply and that the 550 mm to 750 mm cable lengths reach your motherboard and GPU routing paths. Confirm your mains supply falls within the 90 V to 264 V, 47 Hz to 63 Hz input range. Ensure you have mounting points for a standard ATX12V unit and that the single-rail design matches your overcurrent protection preferences.

How it compares

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

Price $243.99
Pricier than about 71% of the 10,869 comparable items (median $142.99).
Max wattage 1100 W
Higher than about 85% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSilverStone
Model nameSST-ST1100-TI
Product typeATX12 V
Ports & slots
PCIe power connectors8 × 6+2-Pin
SATA power connectors16
Output type+3.3 V@25A, +5 V@22A, +12V1@92A
Connection types1 × 24 / 20-Pin motherboard connector (550 mm)
1 × 8 / 4-Pin EPS / ATX 12 V connector (750 mm)
1 × 8 / 4-Pin EPS / ATX 12 V connector (550 mm)
8 × 8 / 6-Pin PCIE connector (550 mm x 8)
16 x SATA connector ("600 mm / 150 mm / 150 mm / 150 mm" x 4)
6 × 4-Pin Peripheral connector ("600 mm / 150 mm / 150 mm" x 2)
1 × 4-Pin Floppy adapter connector (100 mm)
Power
Max wattage1100 W
Power efficiency90% ~ 94% at 10% ~ 100% loading
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS TITANIUM Certified
Overvoltage protectionYes
Overload protectionYes
Supply voltage90–264 V
AC input frequency47–63 Hz
Size & build
Product dimensions5.91 in × 3.39 in × 7.09 in
Product weight8.73 lb (3.96 kg)
Shipping weight4.89 kg
Package size371 × 236 × 135 mm
Compatibility
PSU length limit180 mm
More details
Fan configuration1 × 135 mm silent fan
Mean time between failures>100,000 h

Questions about this item

How loud and hot does the 135 mm fan run when the 1100 W unit operates continuously at 50 °C?

The 135 mm fan uses intelligent semi-fanless operation, staying ultra-quiet while the Titanium-rated efficiency (90–94 %) keeps waste heat low even during 24/7 loads at 50 °C ambient.

Which cables must I already have to install this fully modular 1100 W supply?

No cables are permanently attached; the box includes the 24-pin motherboard lead, two EPS 8/4-pin leads, eight PCIe 6+2-pin leads and sixteen SATA leads — everything needed for a typical build.

Will the single +12 V rail rated at 92 A safely power an older graphics card that uses 6-pin PCIe connectors?

Yes — the eight included 6+2-pin PCIe cables split to 6-pin, and the single 92 A +12 V rail with ±3 % regulation delivers stable power to legacy and current GPUs alike.

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