Dell R420xr Personal Computer User Manual


 
System Capacity
(in GB)
DIMM Size (in
GB)
Number of
DIMMs
Organization and
Speed
DIMM Slot Population
1R x8, 1600 MT/s
12 2 6
1R x8, 1333 MT/s
1R x8, 1600 MT/s
A1, A2, A3, B1, B2, B3
24 4 6
2R x8, 1333 MT/s
2R x8, 1600 MT/s
A1, A2, A3, B1, B2, B3
48 8 6
2R x4, 1333 MT/s
2R x4, 1600 MT/s
A1, A2, A3, B1, B2, B3
96 16 6
2R x4, 1333 MT/s
2R x4, 1600 MT/s
A1, A2, A3, B1, B2, B3
128 16 8
2R x4, 1333 MT/s
2R x4, 1600 MT/s
A1, A2, A3, A4, B1, B2, B3,
B4
160 16 10
2R x4, 1333 MT/s
2R x4, 1600 MT/s
A1, A2, A3, A4, A5, B1, B2,
B3, B4, B5
192 16 12
2R x4, 1333 MT/s
2R x4, 1600 MT/s
A1, A2, A3, A4, A5, A6, B1,
B2, B3, B4, B5, B6
256 32 8
4R x4, 1066 MT/s
A1, A2, A3, A4, B1, B2, B3,
B4
384 32 12
4R x4, 1066 MT/s
A1, A2, A3, A4, A5, A6, B1,
B2, B3, B4, B5, B6
Removing Memory Modules
WARNING: The memory modules are hot to the touch for some time after the system has been
powered down. Allow time for the memory modules to cool before handling them. Handle the
memory modules by the card edges and avoid touching the components or metallic contacts on
the memory module.
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
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