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Black rectangular ATX power supply unit with fully modular cable sockets and a 135 mm fan grille

Silverstone Technology

Silverstone Technology HA1200R-PM 1200W power supply

SKU CH-KZ8M-0SARF MPN HA1200R-PM

A 1200 W ATX 3.0 compatible fully modular power supply with a 135 mm FDB fan, Cybenetics Platinum efficiency and a 12VHPWR connector for PCIe 5.0 graphics cards

  • TypeATX 3.0 Compatible
  • Maximum Power1200 W
  • Fans1 x 135 mm
  • PFCActive
  • Max PSU Length150 mm
  • ModularFull Modular
  • 1200 W continuous output at 50 °C ambient
  • Cybenetics Platinum certified for >=87% &
  • ATX 3.0 compatible with 12VHPWR Gen5 connector
  • Fully modular cables keep builds tidy
  • 135 mm FDB fan runs silent with semi-fanless mode

1200 W ATX 3.0 power supply

The Silverstone HA1200R-PM is a fully modular ATX 3.0 compatible unit rated for 1200 W maximum output. It includes a 12VHPWR connector that meets the PCIe 5.0 standard for modern graphics cards. Builders assembling high-end workstations or enthusiast gaming rigs will find the full cable set and 150 mm depth a practical fit for standard cases.

Sustained 1200 W delivery at 50 °C

The unit is specified for continuous 24/7 operation at its full 1200 W rating while the internal temperature reaches 50 °C. Combined +12 V rail output matches the total 1200 W capacity, so heavy compute or rendering loads do not force derating. Active PFC maintains a power factor above .9 across the 90 to 264 Vrms input range.

Semi-fanless cooling with FDB bearing

A 135 mm fluid-dynamic-bearing fan spins only when thermal load demands it, allowing 0 dBA minimum noise during light work. Japanese electrolytic capacitors and the Cybenetics Platinum efficiency badge — 87 to 89 percent overall — keep waste heat low. MTBF is rated at 100000 hours under the stated operating envelope.

Points forts

  • 1200 W continuous output at 50 °C ambient
  • Cybenetics Platinum certified for >=87% &
  • ATX 3.0 compatible with 12VHPWR Gen5 connector
  • Fully modular cables keep builds tidy
  • 135 mm FDB fan runs silent with semi-fanless mode

Caractéristiques

BrandSilverStone
TypeATX 3.0 Compatible
Maximum Power1200 W
Fans1 x 135 mm
PFCActive
Max PSU Length150 mm
ModularFull Modular
Energy-EfficientCybenetics Platinum
Poids d’expédition3.72 kg
Dimensions du colis337 × 229 × 121 mm

Questions sur cet article

How loud is the 135 mm FDB fan under continuous 1200 W load?

The semi-fanless design keeps the 135 mm FDB fan completely off at low loads, so the unit can run at 0 dBA minimum. Under heavy load the fan spins up but remains rated for ultra-silent operation.

Does this PSU include the 12VHPWR cable for a PCIe 5.0 graphics card?

Yes, the fully modular set ships with a native 12+4 pin 12VHPWR cable that meets the Intel ATX 3.0 specification, so no adapter is required for Gen5 GPUs.

Will the 150 mm depth fit alongside an older ATX motherboard with a 24-pin connector?

The unit follows the standard ATX PS2 form factor and includes a 24-pin ATX cable, so it mounts in any ATX case and connects to legacy motherboards without modification.

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