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What is cache?

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February 1, 2010 1:18:18 PM

What is cache? I see CPU's & programs that offer to speed up your computer by using cache.

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a b à CPUs
February 1, 2010 1:22:22 PM

Cache, pronounced cash, is a temporary storage place inside your computer for frequently or recently accessed data.
or
A cache, in computer terms, is a place to store information that's faster than the place where the information is usually stored. Cache memory is fast memory that is used to hold the most recently accessed data in slower main memory. The idea is that frequently accessed data will stay in cache, which allows the CPU to access it more quickly, which means it doesn't have to wait for the data to arrive.
In reference to your processor, the Cache Memory is the Processor's internal quick-hand storage that it uses for things that it's currently processing at that given time.
As with most things, the more cache memory a processor has, it will usually run smoother and faster than one with less of about the same operating frequency.
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a b à CPUs
February 1, 2010 3:47:26 PM

lol, Do you ever sign off mfarrukh, seems like you've been on all night and day
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a b à CPUs
February 1, 2010 3:51:11 PM

bige420 said:
lol, Do you ever sign off mfarrukh, seems like you've been on all night and day


Didn't you know he's a robot? :lol: 
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February 1, 2010 4:21:10 PM

warmon6 said:
Didn't you know he's a robot? :lol: 

maybe you too :lol: 
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a b à CPUs
February 1, 2010 4:26:00 PM

nau4nik said:
maybe you too :lol: 


Na. im flesh and bone. :p 
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a b à CPUs
February 1, 2010 9:27:18 PM

mfarrukh said:
As with most things, the more cache memory a processor has, it will usually run smoother and faster than one with less of about the same operating frequency.

Subject to architectural differences of course. Core 2 Quad has a ton of cache but is slower than Core i7 which has less cache. It's pretty safe to compare between CPUs of the same architecture, but outside of that it's like comparing clock speed and assuming a faster clock speed means higher performance ;) 
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February 2, 2010 4:18:42 AM

On the topic of cache, this is a very interesting watch:

http://www.infoq.com/presentations/click-crash-course-m...

Caution: Its very long and a little technical. The jist of it is that speed on modern systems is dictated by cache misses (when the cpu cant find the data it wants in cache and has to go to main memory) and how cache mechanisms are becoming increasingly complex.
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February 2, 2010 1:16:21 PM

scudst0rm said:
On the topic of cache, this is a very interesting watch:

http://www.infoq.com/presentations/click-crash-course-m...

Caution: Its very long and a little technical. The jist of it is that speed on modern systems is dictated by cache misses (when the cpu cant find the data it wants in cache and has to go to main memory) and how cache mechanisms are becoming increasingly complex.

Thank you for the video .
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