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SpeedFan is a system monitor for Microsoft Windows that can read temperatures, voltages and fan speeds of computer components. [3] It can change computer fan speeds depending on the temperature of various components. [1] [4] The program can display system variables as charts and as an indicator in the system tray.
Another method of reducing the fan speed [5] is by moving the 5 V wire in the classical Molex power connector in the place of the Ground wire going to the fan, thereby delivering +7 V (12 V − 5 V = 7 V) to the fan. However, this is a potentially risky method, because +5 V PSU line is intended to source current only, not sink it, so the PSU is ...
Formerly an IBM brand, Lenovo acquired the ThinkCentre desktop brand following its purchase of IBM's Personal Computing Division (PCD) in 2005. Following its acquisition of IBM's PCD, Lenovo has released M-series desktops in multiple form factors, ranging from traditional tower, small form factor, to ultra small form factor, and all-in-ones (AIOs).
In May 2005, the ThinkCentre M52 and A52 desktops were announced by Lenovo. [5] These desktops marked the first time the ThinkCentre line incorporated dual-core processors and 64-bit technology. [5] At the time of release, Lenovo also announced plans to incorporate Intel Active Management Technology (iAMT) in future products. [5]
Where noise is an issue, larger, slower-turning fans are quieter than smaller, faster fans that can move the same airflow. Fan noise has been found to be roughly proportional to the fifth power of fan speed; halving the speed reduces the noise by about 15 dB. [22] Axial fans may rotate at speeds of up to around 38,000 rpm for smaller sizes. [23]
ThinkStation is a brand of professional workstations from Lenovo announced in November 2007 and then released in January 2008. They are designed to be used for high-end computing and computer-aided design (CAD) tasks and primarily compete with other enterprise workstation lines, such as Dell's Precision, HP's Z line, Acer's Veriton K series, and Apple's Mac Pro line.
The reasons given for this approach to power supply are that it eliminates cross-load problems, simplifies and reduces internal wiring that can affect airflow and cooling, reduces costs, increases power supply efficiency, and reduces noise by bringing the power supply fan speed under the control of the motherboard.
ThinkPad is a line of business-oriented laptop and tablet computers produced since 1992. The early models were designed, developed and marketed by International Business Machines (IBM) until it sold its PC business to Lenovo in 2005; since 2007, all new ThinkPad models have been branded Lenovo instead [5] and the Chinese manufacturer has continued to develop and sell ThinkPads to the present day.