Ch3 CPU Flashcards
PGA
Pin Grid Array socket which accept CPUs with pins that fit into the sockets pin holes.
Used by many AMD CPUs
L1 Cache
Level 1 Cache which is built onto CPUs and is the fastest form of cache.
L4 Cache is the same as main memory? (T or F)
False, L4 is its own cache on highend systems / servers.
Two CPUs used in LGA1366 Socket
- Core i7
- Xeon
L2 Cache
Level 2 Cache built into CPU which is accessed after L1 Cache and feeds the L1 Cache.
Two CPUs used in AMD 940 Socket
- Opteron
- Athlon 64 FX
clock rate
Frequency / speed of component measured in hz.
Aka clock speed or bus speed
Three CPUs used in LGA1155 Socket
- Core i7, i5, i3
- Xeon
- Pentium / Celeron
L3 Cache
Level 3 Cache is the largest and slowest cache and is accessed after the L2, which is fed by the L3.
Six Steps of the A+ CPU Installation Method
- Select a CPU
- Employ ESD precaution methods.
- Ready the motherboard.
- Install the CPU - Remember to use release lever/ retaining arm.
- Test Installation.
- Close case and monitor the system.
Three Categories of Clock Speed
- Motherboard bus speed.
- External clock speed.
- Internal clock speed.
You have installed the CPU and heat/sink assembly.
What should you do next?
Plug in the fan.
4 Intel LGA Sockets
- 755
- 1155 - replaced the 1156
- 1156
- 1366
What seals the tiny gaps between the CPU cap and the heat sink?
Thermal Compound.
A customer’s liquid cooled system is intermittingly overheating.
Give two possible reasons for this?
- Trapped air in the lines.
- Water pump is becoming faulty.
internal clock speed
Internal frequency of the CPU which is usually the value shown in marketing materials.
internal clock speed = motherboard base clock x CPU multiplier
external clock speed
Frequency of the front side bus which connects the Northbridge to the CPU.
Newer motherboards do not use anymore.
You are troubleshooting a CPU and have already cut power, disconnected the power cable, opened the case, and put on your antistatic strap.
What should you do next?
Check the connections of the motherboard / CPU.
When deciding on a CPU for use with a specific motherboard, what does it need to be compatible with?
The socket on the motherboard.
Two CPUs used in AMD AM2 Socket
- Athlon 64 x2
- Athlon 64
What does HyperThreading do?
It enables for two simultaneous threads to be processed by one CPU core.
Which is the fastest cache memory?
L1 (Level 1 ) Cache
Four CPUs used in AMD AM2+ Socket
- Phenom II
- Phenom
- Athlon X2
- Athlon 64
Which socket only supports the i7 processor of the iLine?
LGA1366
Multicore
CPU format where a single physical CPU will contain multiple CPU cores on a single chip.
Six CPUs used in AMD AMD3 / AM3+ / FM1 / F / C32 / G34 Sockets
- Phenom II
- Sempron
- Athlon II
- FX
- Llano
- Opteron
socket
Electrical interface between the CPU and the motherboard.
Four CPUs used in LGA775 Socket
- Core 2 Duoe
- Core 2 Quad
- Xeon
- Pentium / Celeron.
Three CPUs used in LGA1156 Socket
- Core i7,i5,i3
- Xeon
- Pentium / Celeron
What is a possible symptom of a failing CPU?
CPU is beyond the recommended voltage range.
What is the amount of power required to cool the computer?
Thermal Design Power (TDP) aka Thermal Design Point.
Which kind of socket incorporates “lands” to ensure connectivity to the CPU?
Land Grid Array (LGA)
Six AMD PGA Sockets
- 940
- AM2
- AM2+
- AM3
- AMD3+
- FM1
motherboard bus speed
Base clock speed of the motherboard.
HyperThreading
Intel’s instruction set that allows a single CPU to accept and calculate two independent sets of instructions simultaneously which is present in Pentium 4s and the new i3, i5, i7’s.
You just completed a CPU installation. However, when you turn on the computer, the POST sounds a series of beeps, and the system won’t boot.
What is most likely the cause?
The CPU is not properly seated (also there could be a RAM issue).
LGA
Land Grid Array Socket use “lands” that protrude from the socket and touch contact points on the CPU.
Better power distribution and less chance of damaging CPU.
Commonly used on Intel Motherboards.
Where is thermal paste / compound applied to : CPU Cap or Heat Sink?
Apply thermal paste to CPU Cap and not heat sink.
What is the difference between clock speed and bus speed?
Clock speed is referred to the CPUs internal clock speed and the bus speed refers to the motherboards clock rate or front side bus speed.
What is another name for the speed of the CPU?
Internal Clock Speed
Four A+ CPU Troubleshooting Steps
- Check the big four (CPU, RAM, Video Card, Motherboard) for compatibility.
- Fan is connected and functional.
- Heat Sink is connected properly.
- CPU installed properly with correct orientation and flush in the socket.
Thermal Design Power
The maximum power that the computer’s cooling system needs to dissipate heat generated by the CPU.
