Lenovo MT 1871 Hardware Maintenance Manual page 48

Product overview
Feature
Standard memory
Optional memory
Bus architecture
Graphic memory
chip
CMOS RAM
(continued)
44
R50/R50p, R51 Series
Description
R50 series:
v 256 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 512 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
R50p series:
v 512 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 1 GB DDR SDRAM SO-DIMM (PC2700)
card × 1
R51 series:
v 128 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 256 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 512 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 128 MB DDR SDRAM SO-DIMM
(PC2700) card
v 256 MB DDR SDRAM SO-DIMM
(PC2700) card
v 512 MB DDR SDRAM SO-DIMM
(PC2700)
v 1 GB DDR SDRAM SO-DIMM (PC2700)
(maximum of 2048 MB)
v 400 MHz PSB (Processor System Bus)
v 333 MHz DDR (Double Data Rate)
SDRAM (Synchronous DRAM) (PC2700)
v HUB link
v PCI bus
v LPC bus
R50 series:
v 32 MB DDR SDRAM (ATI M7-32)
v 32 MB DDR SDRAM (ATI M9-32)
R50p series:
v 128 MB DDR SDRAM (ATI M10 GL-128)
R51 series:
v Intel 855GME
(total video memory: UMA, 64 MB)
v 32 MB DDR SDRAM (ATI M7-32)
v 32 MB DDR SDRAM (ATI M9-32)
v 242 bytes