Dell Precision Tower 5810 Owner's Manual

Memory Module Guidelines

To ensure optimal performance of your computer, observe the following general guidelines when configuring your system memory:

Memory modules of different sizes can be mixed (for example, 2 GB and 4 GB). But, all populated channels must have identical configurations.
Memory modules must be installed beginning with the first socket.
If memory modules with different speeds are installed, they operate at the speed of the slowest installed memory modules.
NOTE:If all DIMMs are 2133, the CPU ordered may run the memory at a slower speed.

Memory Configuration

Table 1. Memory configurationThe table below illustrates the memory configuration and population rules for the Dell Precision Tower 5810
Tower 5810		Chassis 0		Chassis 1		Chassis 2		Chassis 3
Configuration	Total (GB)	0	1	0	1	0	1	0	1	RDIMM
S4	4	4								2133
S8	8	4		4						2133
S16	16	4		4		4		4		2133
S32	32	8		8		8		8		2133
S32B	32	4	4	4	4	4	4	4	4	1856(2133)
S64	64	8	8	8	8	8	8	8	8	1856(2133)
S128	128	16	16	16	16	16	16	16	16	1866(2133)
S256	256	32	32	32	32	32	32	32	32	1866(2133)

Table 2. Single CPU configurationThe table below illustrates the single CPU configuration and the DIMM sockets:
DIMM1	CPU1
DIMM2	CPU1
DIMM3	CPU1
DIMM4	CPU1

Table 3. Dual CPU configurationThe table below illustrates the dual CPU configuration and the DIMM sockets:
DIMM1	CPU1
DIMM1	CPU2
DIMM2	CPU1
DIMM2	CPU2