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The life expectancy of a PC
Many articles have been written regarding PC life expectancy but none of them really apply to the taxi booking and dispatch industry or any other industry where PCs are left switched on 24 Hours a day so let us just look at the raw data and extrapolate what we can from it.
Both Intel and AMD specify the expected life of a home/office PC CPU at 30,000 -50,000 hours at ambient temperatures. The life expectancy can be considerably shorter if the electronics are stressed in any way. That equates to 3-5 years. Most failures will be as a result of thermal stress and therefore to ensure the full 30-50,000 hours the PCs should be well ventilated and have the fans and filters checked and serviced every 3000 hours (approx 4 months). Everytime your PC CPU is operating above its ideal operating temperature it is ageing much faster.
Based on the assumption that most home office PCs are only switched on for 3-10 hours a day this makes the life expectancy 8-15 years. It also makes the fan/filter service interval at about 3 years which is when most people are thinking about upgrading to the lateset whizzo chipset or soundcard anyway.
So nearly everyone who consumes PCs are happy as technological development leaps forward faster than the failure rate of the PC components and therefore PCs tend to be scrapped or upgraded long before the hardware needs servicing or breaks down.
If we now look at an industry where the PC is required to work 24/7 most suppliers would recommend purpose designed fileservers for such a job. Fileservers are usually rack mounted in temperature controlled dust free cabinets (ours is). It is therefore not unfair to assume that such environments and the purpose built ruggedised machines may double the life expectancy of a CPU.
So lets go back to the booking and dispatch environment where the PC are left on permanently. The environment is very poor indeed. Most offices have incredible temperature variations between winter and summer, day and night.
Coupled with this the air is full of dust, exhaust soot and human detritus. On many sites I have found CPU fans and filters totally blocked after only 9 months of use. This will cause the CPU to operate at a higher temperature and therefore decrease the life expectancy to 150000 hours.
So assuming that you actually clean the fans and filters every 4 months.
ขอแปลแบบคราวๆนะครับ
ทั้ง Intel และ AMD คาดหวังว่าซีพียูสำหรับ Desktop จะมีอายุการใช้งาน 30,000 -50,000 ชั่วโมง
ที่อุณหภูมิห้อง(ไม่เกินสเปกที่ผู้ผลิตกำหนดไว้)
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