b00marrows wrote:
The cpu i was looking at, the ( i7-5820K ) has LESS l2 cashe than my current one @ 256KB per core ... but it dose have 15MB or L3 cashe... URGH i need more information...
Oh, turns out My current CPU has 2MB of l2 cashe per core lol, the site i was using was wrong.
Ah yes i should make a computer building thread next! im not sure how we could check for cpu cashe requirements tho...
One thing I have not said,
is that "the bigger the better" is not true for cache.
To my knowledge, there is 2 reason for CPUs to have low cache size.
- the price.
- The time it takes to find data in cache. Even if cache acces is much more faster than RAM acces, cached values have to be searched (to be simple).
If the requested memory data requested is not in cache (after searching), then the value is loaded from RAM.
So, the bigger the cache is, the longer it takes to find if it has the requested data (or not).
And if the cache is too big, it takes longer to find data in cache, than reading it directly from memory