256MB, 512MB, 1GB (x72, SR, ECC) 240-Pin DDR2 UDIM.
Micron
MT9HTF3272AY - 526MB DDR2 SDRAM UDIMM
256MB, 512MB, 1GB (x72, SR, ECC) 240-Pin DDR2 UDIMM Features DDR2 SDRAM UDIMM MT9HTF3272AY – 256MB MT9HTF6472AY – 512MB MT9HTF12872AY – 1GB Features.