New Transducers TR-5001 - Manual (Page 27)

Memory Installation
The TR-979 Industrial CPU Card provides two 184-pin DIMM
sockets for a maximum total memory of 2GB SDRAM. The memory
modules can come in sizes of 128MB, 256MB, 512MB and 1GB
SDRAM.
The TR-979 Industrial CPU Card supports two 184-pin DIMM
(Dual In-line Memory Module) sockets. In populating the DIMM
sockets, DIMM1 bank should be populated first for less signal reflection.
However, we do not see any issue while populate DIMM2 only. Refer to
the following table on how to configure the memory.
NOTE: Use SDRAM modules with PC2100 specification when running
DDR266 Memory bus speed. With DDR200 Memory bus speed, SDRAM
modules meet PC1600 or PC2100 specification can be used.
184-pin DIMM (2.5V) Unregistered SDRAM
Bank0
(DIMM1)
Bank1
(DIMM2)
Total Memory
128MB ----- 128MB
256MB ----- 256MB
512MB ----- 512MB
1GB ----- 1GB
128MB 128MB 256MB
128MB 256MB 384MB
128MB 512MB 640MB
256MB 128MB 384MB
256MB 256MB 512MB
256MB 512MB 768MB
256MB 1GB 1280MB
512MB 128MB 640MB
512MB 256MB 768MB
512MB 512MB 1GB
512MB 1GB 1536MB
1GB 1GB 2GB
23 TR-5001 User Manual