The good part about a liquid cooling system is that the CPU temperature remains constant no matter how much usage the CPU is experiencing. This is not the case with heat sinks and fans. A similar, but expensive cooling technology is phasechange cooling (also known as vapor cooling).
Air flow should be through the computer and over the motherboard to provide cooling for the motherboard components.
Chapter 2 On the Motherboard The Complete A+ Guide to PC Repair 5/e Update
Gigahertz - One gigahertz (1GHz) is one billion cycles per second.
Register size (word size) - The number of bits processed at one time by the processor. Counted in multiples of 8 bits, such as 8-, 16-, and 32-bit register size. Processors today have 64-bit or 128-bit register sizes.
Bus - Electronic lines to move the 1s and 0s inside the computer.
Pipelines – Separate internal buses for processing data simultaneously
CPU – Central Processing Unit
Multiplier - A number that is multiplied by the bus speed to determine the CPU speed.
Processor Basics Internal Data Bus External Data Bus
Processor Basics Internal and External Data Buses .
How data is transferred E.g. Dear Mom 8-bit CPU – One letter at a time 16-bit CPU – Two letters at a time 32-bit CPU – Four letters at a time 64–bit CPU – Eight letters at a time
Multi-core Processors Combines two processors in a single unit . Dual-core CPU Tri-core CPU Quad-core CPU Combines three processors in a single unit. Two dual-core processors on the same motherboard or two dual-core processors installed in a single unit. Another way to speed up operations is to have two or more processors.
Cache Cache memory that is located inside the CPU. L1 (Level one) cache L2 cache Cache memory that is inside the CPU housing but not part of the CPU, also known as on-die cache . Cache memory located in the CPU housing or on the motherboard. L3 cache Cache - A fast type of memory designed to increase the speed of microprocessor operations.
Installing Processors Computer is off and unplugged. Use antistatic wrist strap and attach to a ground on computer. Remove old processor by lifting ZIF socket retaining lever. Insert CPU into socket (fits only one way). Configure motherboard by jumpers or BIOS software configuration (refer to manual for exact steps). Always hold the CPU by the edges to avoid bending or touching the pins underneath.
Overclocking Processors In order to overclock, you must have the motherboard documentation to determine whether the system board supports different CPU speeds and different multipliers. Overclocking Is changing the front side bus speed and/or multiplier to boost CPU and system speed. This can cause damage to the CPU, motherboard, or other components.
Active listening is participating in a conversation where you focus on what the customer is saying—in other words, listening more than talking. For a technician, active listening has the following benefits:
Allows you to gather data and symptoms quickly
Allows you to build customer rapport
Improves your understanding of the problem
Allows you to solve the problem quicker because you understand the problem better
Provides mutual understanding between you and your customer
Provides a means of having a positive, engaged conversation rather than having a negative,
Focuses on the customer rather than the technician
Provides an environment where the customer might be more forthcoming with information