Neco 2020 Computer Studies Question 2

A small office is setting up a workstation with the following components and their typical power consumptions: - CPU (Intel i5) : 65 W - RAM : 2 sticks of 8 GB DDR4, each 5 W - Hard Disk Drive (1 TB) : 8 W - Solid‑State Drive (256 GB) : 3 W - Graphics Card (mid‑range) : 120 W - Motherboard : 30 W - DVD Optical Drive : 5 W The workstation will be powered by a 500 W power‑supply unit (PSU). Answer the following questions. a) Calculate the total power consumption of the workstation. b) Determine whether the 500 W PSU is sufficient, considering a 20 % safety margin. Justify your answer. c) The workstation will be placed in a closed room of volume 20 m³. Assuming all electrical power is converted to heat, estimate the rise in temperature of the room after one hour if no cooling is provided. (Use specific heat capacity of air = 1.005 kJ·kg⁻¹·K⁻¹, density of air = 1.2 kg·m⁻³.) i) Compute the total heat energy produced in one hour. ii) Calculate the temperature increase in degrees Celsius. d) Recommend an appropriate cooling solution (type and capacity) for the workstation based on the heat generated. e) Briefly explain how the choice of system bus (e.g., PCIe versus the older ISA bus) influences overall system performance.