SY-P4ISR - laptop batteries memory

What is SDRAM? SDRAM is an acronym for Synchronous Dynamic Random Access Memory. The term "Synchronous" means that the clock cycle of the memory is exactly synchronized with the clock cycle of the bus. Every calculation and operation a PC performs is timed according to a clock ticking millions of times each second, its clock cycle or megahertz rating. If the memory clock cycle is not in sync with the bus clock cycle, system problems will occur. What is Cache Memory? Cache, pronounced "cash", is a high-speed memory designed to supply the processor with the most frequently requested data and instructions. The information located in the cache memory can be accessed many times faster than information in the system''s main memory. The more information your system can retrieve from the cache memory, the more efficient the system will run. Level 1 (L1) cache, also referred to as Primary Cache, is normally located inside the CPU chip. Level 2 (L2) cache, also referred to as Secondary Cache, was normally located on the system board near the CPU in the past. In today''s systems, both are physically located within the CPU and as a result are not upgradable.

What is PC-100 memory? Simply put, PC100 is a faster main memory bus, transferring data at 100MHz. Up to now, the fastest common PC bus speed has been 66MHz, so PC100 represents about a 50% theoretical improvement in speed. Tests have shown a typical speed increase of over 20%. Do I need to remove the stickers that are on the chips of my new DIMM? DO NOT remove any stickers from the modules. Removing these stickers will void the warranty. The main sticker is the bar code sticker which has the serial number under the bar code. This bar code number gives us all of the information about the modules that we require for warranty replacement and information, as well as allowing us to determine which module you have and what its characteristics are. These stickers will not have any affect on performance nor will they be affected by the heat inside the system. What is VRAM? VRAM is an acronym for Video Random Access Memory. Video memory is DRAM (Dynamic Random Access Memory) with an on-board serial register/serial access memory. It is designed for video applications.