Power supply Silverstone 400W ST40F-ES230 PSU ATX Black - SST-ST40F-ES230

Silverstone ST40F-ES230 is a compact ATX power supply with 400 W power, aimed at budget and mid-range configurations without claims for heavy overclocking. You get a basic 80+ efficiency of up to 85%, which means less loss and lower consumption compared to non-certified PSUs. The format is standard ATX, in black color, so it will visually fit most cases. A good choice for a stable build where you seek reliability and a meaningful set of connectors without paying for unnecessary extras like modularity.

What you get

With a real 400 W output power and two separate 6+2 pin PCIe connectors, you can comfortably power a graphics card from basic to more meaningful mid-range class, without strange adapters. The main 20+4 pin ATX and 4+4 pin ATX12V/EPS12V cover standard desktop motherboards, including more serious CPUs without extreme load. With 4 x SATA and 3 x Molex, you have enough options for SSDs, HDDs, fans, and older peripheral hardware, while 4-pin FDD is useful if you still rely on legacy devices. The input AC 180–264 V, 47–63 Hz makes it a stable choice for our electrical network, keeping the PSU in a comfortable mode under typical home or office load.

• Power 400 W – sufficient for budget and mid-range gaming or office configurations without extremely power-hungry GPUs and CPUs.
• 80+ certification (up to 85% efficiency) – less loss as heat and lower electricity bills compared to completely unverified power supplies.
• ATX format and length 140 mm – standard size that fits without drama in most mid-tower and even more compact cases.
• 2 x 6+2 pin PCIe – the ability to power one more meaningful graphics card or models requiring two PCIe connectors, without additional adapters.
• 4 x SATA + 3 x Molex + 1 x FDD – flexibility for a combination of modern SSDs/HDDs, fans, and legacy devices in one build.
• 1 x 20+4 pin ATX and 1 x 4+4 pin ATX12V/EPS12V – full compatibility with modern desktop motherboards, including more loaded CPU configurations.
• Weight 1.26 kg and black color – solid enough not to look hollow, and visually unobtrusive in any type of case.

Who it is suitable for

This PSU is suitable for budget and mid-range gaming configurations, office machines, and home PCs where you seek stability rather than maximum power or modularity. It is appropriate if you plan a reasonable GPU and are not chasing high-end graphics cards with huge consumption. If you are thinking about a high-end build with many components and heavily overclocked hardware, it is better to aim for a higher class and higher power.

The most sensible thing here is the combination of 400 W, 80+ efficiency, and two 6+2 pin PCIe connectors in standard ATX format – a balanced choice for a practical build without unnecessary extras.