T2105CS - laptop batteries memory

What is These are common Bus speeds used in today''s PC''s. runs at 66 MHz, the clock speed of the bus between the CPU and the memory , or Front-Side Bus as it is called. is a faster main memory bus, transferring data at 100MHz. Up until recently, the fastest common PC bus speed has been 66MHz, so PC-100 represents about a 50% theoretical improvement in speed. Tests have shown a typical speed increase of over 20%. PC-133 runs at the bus speed of 133MHz giving an even more pronounced increase in speed. why did my computer slow down after I installed more RAM? In most cases additional RAM improves system performance. However, there are a few rare times when additional RAM actually makes the system slower. The most common reason for the problem is that the system doesn''t have enough cache to handle the addressing for the additional RAM. If this is your case, the only solution is to upgrade your system or motherboard, as cache cannot be upgraded.

RAM comes in many different kinds of configurations and types-and runs at many different speeds, as well. Before you upgrade, you need to know how to spot the different types. Pictured in these steps are the different types of RAM, including the older-style DIPs and newer SIMMs and DIMMs. Step 1: Dual Inline Packages (DIPs) If you have an older computer, it might use an older kind of memory called a dual inline package (DIP). DIPs plug directly into their own sockets on the motherboard. It''s difficult to find DIPs today because they''re old. They come in pairs or sets of eight. Step 2: Single Inline Memory Modules SIMMs (Single Inline Memory Modules) plug into long, matching sockets on your motherboard. SIMMs have more capacity than DIPs. Typically, a motherboard has several banks of SIMM sockets into which you plug SIMMs. SIMMs come in 30-pin and 72-pin formats. 30-pin SIMMs usually have less capacity than 72-pin, and often come with capacities of 256K, 1MB, 2MB, and 4MB. 72-pin SIMMs come in 1MB, 2MB, 4MB, 8MB, 16MB, and 32MB. Step 3: Dual Inline Memory Modules

what is Rambus Memory? Rambus is a chip to chip interface design that is system wide, allowing up to 800 MHz transfer rates. It allows data transfer through a simplified bus that operates in a high frequency range. Rambus uses a low voltage signal swing with data transfer on both edges of a synchronizing clock pulse. The Intel Pentium IV CPU is designed to take full advantage of this new, extremely fast memory design. What is DDR Memory? DDR memory, or Double Data Rate memory, is an evolutionary new memory technology that doubles the data through put to the processor, or CPU. It is an evolution of SDRAM, which leverages the existing production and environment to provide higher PC performance. What is meant by Registered memory? "Registered" is a means of "Buffering" the memory in SDRAM. This means that the clock signal is boosted across the entire array of memory chips so that the computer sees a clean sharp clock signal instead of a weakening clock signal as it progresses along the length of the memory path. Registered memory must be supported by the system board and cannot be mixed with "Unbuffered" modules. You must have only Registered memory to use Registered memory.