VAIO PCG-XG28 - laptop batteries memory

We understand that our customers need a dependable company that provides great prices and great support. We start by selling high quality memory for less money, and back it up with a lifetime warranty and excellent support. We stand behind our products, period! 4 All Memory Mission Statement It is the mission of 4 All Memory to develop and maintain long-term customer relationships by providing the best value in the computer parts industry. We strive to provide high quality products that meet or exceed the needs of our customers. Our mission will be accomplished through an ongoing dedication to customer satisfaction, continuous improvement and innovation. What is RAM and why do I need it? Adding random access memory (RAM) to your system is the cheapest and most effective way to make it run faster.

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 over quantity and speed. 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. However, some of them are designed 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 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.

You can think of RAM as an incredibly fast hard drive that stores information temporarily instead of permanently. When you start a program it is loaded from the hard drive into RAM. When a program is running in RAM it can run hundreds to thousands of times faster than it can if run directly from the hard drive. The problem is that the capacity of a standard hard drive is many times the size of a computer''s RAM size, meaning it is possible to load so many programs that the RAM can no longer hold them. When that happens, your computer''s virtual memory kicks in, and that''s bad. Virtual memory is simply your hard drive trying to act like a RAM chip. Since the hard drive is so much slower than real memory, programs stutter and sometimes crash when the hard drive has to do a job it was never designed for. There are only two solutions to this problem: close some programs until virtual memory is no longer needed, or add more physical memory. If you can afford it (and current memory prices are low enough that practically anyone should be able to), the latter solution is always preferable.