E - DDR DIMM Slots
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DDR DIMM Slots The motherboard was designed to support 2 gigabytes (GB) of memory based on the 512 Mbit technology. However, this technology has not been validated on this motherboard. Gateway has qualified this board for a total of 1-GB system memory.

Dynamic interface memory module (DIMM) features include:

  • 2.5 V (only) 184-pin DDR SDRAM DIMMs with gold-plated contacts
  • Unbuffered single-sided or double-sided DIMMs
  • Minimum memory: 64 MB
  • 200/266 MHz DDR SDRAM DIMMs only
  • Serial Presence Detect (SPD)
  • Suspend to RAM
  • Non-ECC and ECC DIMMs

DDR SDRAM Defined

DDR (double-data rate) memory is the next generation SDRAM. Like SDRAM, DDR is synchronous with the system clock. The big difference between DDR and SDRAM memory is that DDR reads data on both the rising and falling edges of the clock signal. SDRAM only carries information on the rising edge of a signal. Basically this allows the DDR module to transfer data twice as fast as SDRAM. For example, instead of a data rate of 133MHz, DDR memory transfers data at 266MHz.

DDR modules, like their SDRAM predecessors, are called DIMMs. They use motherboard system designs similar to those used by SDRAM; however, DDR is not backward compatible with SDRAM-designed motherboards. DDR memory supports both ECC (error correction code, typically used in servers) and non-parity (used on desktops/laptops.)