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There are two types of cache in your computer: level 1 and level 2. The level 1 cache (also known as L1 cache) is inside the CPU itself, and you really have no control maxtor over quantity and speed. laptop hard drive the level 2 cache (also known as l2 cache) are all external to the chip. the l2 cache on the nside the cpu package (though still external to the cpu chip itself). those systems run on motherboards with a variety of core logic chipsets. drive however, some of them are designed maxtor so that the l2 cache only works with the first 64mb of ram in your system. the two main culprits are the chipsets—two of the most common chipsets available. now, 64mb is a lot of ram, so it''s not like your system is somehow crippled (at least, not for gaming). but you should computer hard drive be aware that in the case of boards using these chipsets, more is not necessarily better. motherboards with the chipset probably can cache up to 512kb of ram, but a few motherboard makers cheaped out and left out a critical tag ram chip and—you guessed it—those boards can only cache the first 64mb or ram. to my knowledge, boards that use the can cache more than 64mb, but be wary.
edo dram. extended data out dram edo speeds are measured in nanoseconds. you can buy edo as fast as 50ns for your personal computer main memory (you may see faster edo dram on some graphics cards. edo memory is commonly available as 72-pin simms). fpm dram. fast page mode dram fast-page mode is becoming increasingly drive scarce, but, unless you''re running a very early system (430nx chipset or earlier) or a 486 system, you probably don''t want to get dram. fast-page mode memory comes in simms. rdram is shipped in rimms (rambus inline memory modules). future systems using the intel 820 chipset and the upcoming 600mhz plus pentium iiis will use rambus memory, but they aren''t out as of this writing. way back in the dark ages of the pc architecture, i once owned an original compaq portable. while the compaq supported a whopping 640kb of ram, it only came with 256kb. i upgraded my compaq myself with an additional 384kb of memory by carefully inserting 27 individual 16kb ram chips. the hunger for memory has steadily increased since then; 64mb is no longer unusual. upgrading memory is easier, too; you no longer must painfully insert individual ram chips.
memory basics one of the best ways to increase the performance of your computer system is by adding more memory. with additional memory, you can have more programs running at the same time, and work on larger business files like spreadsheets and databases. easily installed, ram chips can speed up graphics applications, multimedia and, especially, games. how it works before information can be processed maxtor by a computer, it must first be transferred hard to a special data storage area called drive ram (random access memory). ram is connected directly to the processor by high speed data pathways. as long as your data is in ram, the computer''s processor has almost instantaneous access to it. when the processor needs information that is not currently in ram, it must be loaded from the hard drive and placed in ram, a much slower process. so the more ram you have, the higher your system''s overall performance.
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