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Our first test is low load system power consumption, at idle and during video playback. While some users work their systems hard, other machines are often left idling or used for mundane tasks like watching video or surfing the web for hours on end.
At idle and during video playback using discrete graphics, the i3-2100T, undervolted i5-2400, and i5-2400S were a tad more frugal than i3-2100 and i5-2400, but the difference was just one watt.
On a theoretical full load, the i3-2100T and i5-2400S used 12W and 14W less respectively than its similarly-named counterparts. However, the undervolted i5-2400 did quite well, consuming only 4W more than the i5-2400S and with a much higher clock speed too.
For our thermal test, each CPU was paired with the Scythe Kabuto with its stock
fan spinning at ~800 rpm. AMD temperatures were taken using the motherboard's
sensor via SpeedFan and Intel temperatures were taking with RealTemp.
*Note: direct temperature comparisons between Intel and AMD processors should not be made.
On load, the i5-2400 was 5°C warmer than the i5-2400S, while the difference was only 2°C when undervolted. The i3-2100 and i3-2100T ran the coolest at just 19°C above ambient.
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