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Someone explain please.

post #1 of 76
Thread Starter 
I need to know what L2 cache is, what the FSB is and why its different from the other speed mentioned (3.2ghz...)
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post #2 of 76
I can explain the L2 Cache question, but not the other, because I'm not 100% sure of what you mean.

L2 cache is basically just VERY fast RAM (like 18000 mb/s or so) compared to most RAM's 2000-4000's mb/s.
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post #3 of 76
Hi.

L2 cache= Short for Level 2 cache, cache memory that is external to the microprocessor. In general, L2 cache memory, also called the secondary cache, resides on a separate chip from the microprocessor chip. Although, more and more microprocessors are including L2 caches into their architectures.

FSB = The bus that connects the CPU to main memory on the motherboard. I/O buses, which connect the CPU with the systems other components, branch off of the system bus.
The system bus is also called the frontside bus, memory bus, local bus, or host bus.

Multiplier = The multiplier lock is used by CPU manufacturers to prevent consumers and dealers from overclocking the CPU. When overclocking became mainstream, profit margins for CPU manufacturers lowered because users wouldn't need to upgrade to a faster processor.

When locked, the multiplier--the factor by which the bus speed is multiplied to derive the CPU speed--is stuck at one given value, thus ruling out any overclocking on motherboards strictly built to the CPU manufacturers specifications. The lock is hard wired into the CPU and is very difficult to overcome.

-Webopedia

Multiplier x Bus = CPU speed.

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post #4 of 76
the front side bus or system bus is the physical bi-directional data bus that carries all electronic signal information between processor and other devices within the system like your RAM, video cards, PCI expansion cards, hard disks, the memory containing the system BIOS, etc

L2 cache is memory connected to your processor and it is faster than accessing the system RAM via the front side bus.
post #5 of 76
FSB is what almost your entire system communicates through... I wish i could link you to a good diagram... Maybe someone else can...

It is different because of multipliers and other stuff, but in fact at the desired 1:1 ratio it is the same.

Intel FSB is quad pumped, so take my PC for example.

FSB = 1066/4 = 266.5

CPU = 2400/9 = 266.5

DDR2 = 533/2 = 266.5

So everything is the same frequency And i used stock settings, for the example
post #6 of 76
Thread Starter 
well then what is ram for? what makes it different then the ram built in the processors?

In the other question... when you look at processors for sale it will say "
E6320 1.86ghz. 1066fsb"
Why does it mentions two different speeds? what does each represent?
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post #7 of 76
L1 Cache is the fastest of all, but sadly its memory is extremly low, imagine the day when we will have a 1mb L1 Cache, omg! You have to remember that you have to buy RAM sticks because they carry a lot more of memory, up to 2 GB per stick, as a processor is limited to 2x4MB (8MB) at the greatest for at least home computers, and 8MB= 0.008GB, and knowing that your OS requires at least 0.256GB (256MB) or RAM, you can see the problem.
    
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post #8 of 76
the cache in the CPU is used for code and stuff that is used very frequently, ram is used to hold the bigger stuff, like your internet browser for example.

You could think of it like RAM vs Harddrive

Why not put everything on the RAM and cut out the hard drive?

RAM is expensive, and it would be impractical to store everything on there.

*
as stated above FSB is basically what your system communicates through, so they are telling you the speed of the FSB. And they also tell you the speed of the CPU.
post #9 of 76
Quote:
Originally Posted by brherper View Post
well then what is ram for? what makes it different then the ram built in the processors?

In the other question... when you look at processors for sale it will say "
E6320 1.86ghz. 1066fsb"
Why does it mentions two different speeds? what does each represent?
1.86 is the speed of the CPU

1066 is the rated BUS speed (quad-pumped: 266.5 x 4 = 1066)

7 x 266 = 1.862 (multi x BUS = CPU speed)
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post #10 of 76
You wouldn't be able to store data on RAM for the simple purpose that RAM is unloaded as soon as it powers off, which means that if it was somehow possible to install an OS on your RAM, you would have to reinstall everything again when you turn your PC off.
    
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