The largest supported UDIMM on the T310 is 4gb. Here is the part number and specifications:
R1P74 4GB, UDIMM 1333 (Dual Rank) DIMM,4G,1333,2RX8,8,240,UBE,LV
The largest supported RDIMM on the R710 is 16gb. The bios has to be current to support these RDIMM's.
Here is the part number and specifications:
Y898N 16GB RDIMM 1067 – QuadRank RDIMM,16G,1066,2GX72,8,240,4RX4
Regards,