Summary

10 IT Essentials: PC Harware and Software Companion GuideFigure 11-5MotherboardSelect the CPU and Heat Sink/Fan AssemblyReplace the CPU when it fails or is no longer adequate for the current applications. Forexample, you might have a customer who has purchased an advanced graphics application.The application might run poorly because it requires a faster processor than the current CPU.Before you buy a CPU, make sure that it is compatible with the existing motherboard:■■■The new CPU must use the same socket type and chipset.The BIOS must support the new CPU.The new CPU might require a different heat sink/fan assembly.Manufacturers’ websites are a good resource to investigate the compatibility between CPUsand other devices. When upgrading the CPU, make sure that the correct voltage is maintained.A voltage regulator module (VRM) is integrated into the motherboard. The voltagesetting for the CPU can be configured with jumpers or switches located on the motherboard.Figure 11-6 shows two similar CPUs that use different sockets.Select RAMNew random-access memory (RAM) might be needed when an application locks up or ifthe computer displays frequent error messages. To determine whether the problem is theRAM, replace the old RAM module, as shown in Figure 11-7. Restart the computer to seewhether the application runs properly.