The HITACHI Vintage 256MB 32x72 PC100R ECC RDIMM with HEAT SPREADERS HB52R329E2-B6 is a high-quality memory module designed for workstations and servers. With a total capacity of 256 MB spread across one module, this SDR SDRAM RAM features ECC memory and is registered for improved stability. Made in Japan by Hitachi, this module is compatible with Intel PC-100 specifications and operates at a speed of 100MHz. The tall profile and heat spreaders ensure optimal performance and reliability for your computing needs.