Intel D865GLC Manual - Page 15

Figure 7: Examples of Single Channel Configurations without Dynamic mode SDRAM DDR (Double Data Rate) Synchronous DRAM (SDRAM) improves memory performance through memory access that is synchronous with the memory clock. This simplifies the timing design and increases memory speed because all timing is dependent on the number of memory clock cycles. Note: All memory components and DIMMs used with the D865GLC motherboard must comply with the PC SDRAM specifications. These include the PC SDRAM Specification (memory component specific) and the PC Serial Presence Detect Specification. ECC Memory Error checking and correcting (ECC) memory detects multiple-bit errors and corrects single-bit errors. When ECC memory is installed the BIOS supports both ECC and non-ECC mode. ECC mode is enabled in the Setup program. The BIOS automatically detects if ECC memory is installed and provides the Setup option for selecting ECC mode. If any non-ECC memory is installed, the Setup option for ECC configuration does not appear and ECC operation is not available. The following table describes the effect of using Setup to put each memory type in each supported mode. Whenever ECC mode is selected in Setup, some performance loss occurs. Table 5: Memory Type Memory Error Detection Mode Established in Setup Program Non-ECC DIMM ECC DIMM ECC Disabled No error detection No error detection ECC Enabled N/A Single-bit error correction, multiple-bit error detection D865GLC Motherboard Manual 14