Acer Veriton 3600G Technical Information Page 33

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24 Chapter 1
The following conditions must be met:
T Matched DIMM configuration in each channel
T Same Density (128MB, 256MB, 512MB, etc.)
T Same DRAM technology (128Mb, 256Mb, or 512Mb)
T Same DRAM bus width (x8 or x16)
T Both either single-sided or dual-sided
T Matched in both Channel A and Channel B memory channels
T Populate symmetrical memory slots (Slot 0 or Slot 1)
The following conditions do not
need to be met:
T Same brand
T Same timing specifications
T Same DDR speed
Symmetrical DIMMs must be identical for optimal performance
T Same DIMM density, e.g. 128MB, 256MB, 512MB, etc.
T Same DRAM Technology, e.g. 128M-bit, 256M-bit, etc.
T Same DRAM bus width, e.g. x8 or x16
T Single Sided or Dual Sided
NOTE: Note: Memory interface speed will be set to lowest speed of memory populated
Memory Characteristics
Optimize performance for single or dual channel is obtained with matched DIMM population
Table below shows DIMMs with same Organization and Density, but are non-matching as bus width,
technology and/or external banks are different
T Mixing these DIMMs will put platform into single channel mode
DIMM 1 DIMM 2 DIMM3 DIMM4 Total
128MB~1GB 128MB~1GB 256MB~2GB
128MB~1GB 128MB~1GB 256MB~2GB
128MB~1GB 128MB~1GB 128MB~1GB 128MB~1GB 512MB~4GB
1256Mb32Mx8 * 8 pcs256MB32Mx64
2128Mb16Mx8 * 16 pcs256MB32Mx64
1256Mb16Mx16 * 4 pcs128MB16Mx64
1128Mb16Mx8 * 8 pcs128MB16Mx64
External
Banks
TechnologyCompositionDensityOrganization
1256Mb32Mx8 * 8 pcs256MB32Mx64
2128Mb16Mx8 * 16 pcs256MB32Mx64
1256Mb16Mx16 * 4 pcs128MB16Mx64
1128Mb16Mx8 * 8 pcs128MB16Mx64
External
Banks
TechnologyCompositionDensityOrganization
Different Bus
Width
Different
Technology
Same
Density
Same
Organization
Same # of
DRAM Banks
Same
Bus Width
Different
Technology
Same
Density
Same
Organization
Different # of
DRAM Banks
Non-Matched
128MB DIMMs
Non-Matched
256MB DIMMs
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