The Kingston KVR133X64C3/256 ValueRAM KVR133X64C3256 is a single 256MB SDRAM DIMM module with a memory speed of 133MHz. Designed for PC133 bus speed, this RAM is ideal for upgrading the memory capacity of older computers for improved performance. With its compact form factor and reliable Kingston brand, this RAM module is a cost-effective solution for enhancing your computer's memory capacity.