IBM 90Y4555 - Express 4GB (1x4GB, 1Rx4, 1.35V) PC3L-10600 CL9 EC by IBM

IBM 4GB DDR3. Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory clock speed: 1333 MHz, CAS latency: 9, ECC- DDR3 memory for IntelВ® XeonВ® 5500/5600 and 7500-based System xВ® and BladeCenterВ® servers enables increased system performance and increased memory capacity. - DDR3 offers increased performance over DDR2 memory, plus lower power consumption (1.5 V and 1.35 V). - Flexibility in memory DIMM types (RDIMM, UDIMM), density (up to 16 GB), and ranks (single, dual, quad). - IBM memory is compatibility tested and tuned for optimal system performance. Customers continue to look for ways to increase their return on investment on their IT investments and continue to drive system performance. This includes delivering more virtual machines as well as increased performance from the DB-based applications. Virtualization demands maximum memory to run the most-efficient virtual environments, and database and transaction processing applications need maximum memory capacity and bandwidth. Customers need to deliver increased performance for their applications. IBM offers a complete DDR3 memory portfolio for System x and BladeCenter servers that will help improve the performance of your workloads. Many applications will see immediate performance benefits with more memory. The IBM DDR3 portfolio includes RDIMMs with advanced error correction for reliability, performance and maximum memory capacity. This includes both 1.5 V and 1.35 V offerings to maximize workload performance and energy efficiency. IBM also offers 1.5 V and 1.35 V UDIMMS with basic error correction.