8 SFF PCs: Small, But Not So Quiet

Technical Data Of Power Supply

Manufacturer / Model Shuttle PC40N250EV
Safety Standards active PFC, CE, TÜV
Total Power 250 Watt max
AC Input 110 - 240 Volt, 50 / 60 Hz
Max output load + 3.3 V @ 18 A, + 5 V @ 19 A, + 12 V @ 16 A, + 5 Vsb @ 2.0 A
Fans 2x 40 mm
Motherboard connectors 1x 20-pin, 1x 12V ATXV2
Driver connectors 3x Peripheral plug for 5.25", 2x Peripheral plug for Serial-ATA, 1x Peripheral plug for 3.5"

Technical specifications of 250-watt power supply
Cooling System And Heat Levels

As with almost all other shuttle models, the XPC SB77B5 works with a CPU cooling unit that diverts the heat quickly from the heat source. The four heatpipes end in a finned block that is ventilated with a 3.6" (92 mm) fan. The fan is controlled by the BIOS of the motherboard, which offers the user several settings. In a one-hour stress test, the fan seems unperturbed by the heat level generated. Even after an hour the noise level had hardly risen. The gauge showed barely 10 decibels more than after startup, except for the clamor of the fan when the XPC is turned on.

CPU cooling system of Shuttle XPC SB77B5

During the test phase, the temperature remains almost constant

Even the noise after switching on the SFF PC is pleasantly quiet
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