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Silverstone 750W semi-modular PSU in black rectangular housing with flat cables and 140mm fan

Silverstone Technology

Silverstone Technology 750W Semi-Modular 80 Plus Gold PSU ET750-HG

SKU CH-J0J1-N1984

A 750 watt semi-modular power supply with 80 PLUS Gold efficiency and a 140 mm fan rated at 18 dBA

  • Chassis TypeDesktop
  • 80 PLUS Gold efficiency cuts running costs
  • 140 mm fan runs at 18 dBA for quiet operation
  • Single +12 V rail delivers 750 W continuous power
  • Semi-modular all-black flat cables simplify cable routing
  • Rated for 24/7 use at 40 °C ambient temperature

What this power supply is and who it suits

The SilverStone ET750-HG is a 750 watt semi-modular PSU with 80 Plus Gold efficiency. It targets builders who want reliable 24/7 output at 40°C without paying a premium. The single +12V rail and flat black cables keep wiring tidy in standard desktop chassis. A 140mm fan runs at 18 dBA for quiet operation under load.

What it replaces and when the jump is worth it

This unit steps up from the 550 and 650 watt models in the same Essential Gold line. The extra headroom matters when a system draws sustained power from high-end graphics cards using both 8-pin and 6-pin PCIe connectors. If the build stays below 550 watts continuous, the smaller units cover it. The 750 watt version pays off when peak demand sits closer to its rating.

Practical limits of the ATX standard it follows

The semi-modular design fixes the 24-pin motherboard and CPU cables while leaving PCIe and peripheral leads detachable. That suits most desktop cases but cannot adapt to proprietary server backplanes or redundant hot-swap bays. Continuous 40°C operation is rated, yet the chassis airflow must still move enough air to keep the PSU intake cool. The fixed cables also limit routing options in extremely compact enclosures.

Highlights

  • 80 PLUS Gold efficiency cuts running costs
  • 140 mm fan runs at 18 dBA for quiet operation
  • Single +12 V rail delivers 750 W continuous power
  • Semi-modular all-black flat cables simplify cable routing
  • Rated for 24/7 use at 40 °C ambient temperature

Specifications

Chassis TypeDesktop

Questions about this item

What clearance does the 140 mm fan need for airflow in a desktop chassis?

The 140 mm fan is rated at 18 dBA and designed for 40 °C continuous operation, so allow at least 12 mm of free space behind the rear panel for intake and exhaust.

Which cables must stay attached during installation, and which PCIe connectors are detachable?

The 24-pin ATX, 8-pin EPS and one PCIe 8-pin are fixed; the second PCIe 8-pin and the PCIe 6-pin are modular — plug them in only if your graphics card needs them.

When should the 140 mm fan be cleaned or replaced to keep noise at 18 dBA?

Clean dust from the fan blades and intake grill every 12 months; replace the fan if bearing noise rises above 18 dBA or if the 80 PLUS Gold efficiency drops under sustained 40 °C load.

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