RAM（Random Access Memory）随机存取存储器对于系统性能的影响是每个PC用户都非常清楚的，所以很多朋友趁着现在的内存价格很低纷纷扩容了内存，希望借此来得到更高的性能。不过现在市场是多种内存类型并存的，SDRAM、DDR SDRAM、RDRAM等等，如果你使用的还是非常古老的系统，可能还需要EDO DRAM、FP DRAM（块页）等现在不是很常见的内存-RAM (Random Access Memory) random access memory system performance for the impact of each PC users are very clear, so many of my friends now take advantage of the low prices have memory expansion memory, with a view to get higher performance. But now the market is a mixture of both types of memory, SDRAM, DDR SDRAM, RDRAM, etc. If you use or the very old, may also need to EDO DRAM, FP DRAM (block pages) is now is not very common memory