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A PWM-capable fan is usually connected to a 4-pin connector (pinout: Ground, +12 V, sense, control). The sense pin is used to relay the rotation speed of the fan and the control pin is an open-drain or open-collector output, which requires a pull-up to 5 V or 3.3 V in the fan.
A fanless CPU cooler based on heat pipe technology. A quiet, silent or fanless PC is a personal computer that makes very little or no noise.Common uses for quiet PCs include video editing, sound mixing and home theater PCs, but noise reduction techniques can also be used to greatly reduce the noise from servers.
The type of bearing used in a fan can affect its performance and noise. Most computer fans use one of the following bearing types: Sleeve bearings use two surfaces lubricated with oil or grease as a friction contact. They often use porous sintered sleeves to be self-lubricating, requiring only infrequent maintenance or replacement.
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A modern PC with a bus rate of around 1 GHz and a 32-bit bus might be 2000x or even 5000x faster, but might have many more gigabytes of memory. With boot times more of a concern now than in the 1980s, the 30- to 60-second memory test adds undesirable delay for a benefit of confidence that is not perceived to be worth that cost by most users.
Ohio State wide receiver Jeremiah Smith (4) catches a touchdown pass as Tennessee defensive back Rickey Gibson III (1) defends during the first half of their College Football Playoff game at Ohio ...
Garrett Nussmeier threw for 304 yards and three touchdowns as LSU beat Baylor 44-31 in the Texas Bowl on Tuesday. Nussmeier, who finished 24 of 34, tossed scoring passes of 10 yards and 1 yard to ...