Lenovo ThinkPad R51e Series User Manual

Feature Description
Optional memory v 256 MB DDR SDRAM SO-DIMM
(PC2700) card
v 512 MB DDR SDRAM SO-DIMM
(PC2700) card
v 1 GB DDR SDRAM SO-DIMM (PC2700)
card
v 256 MB DDR SDRAM SO-DIMM
(PC2-4200) card
v 512 MB DDR SDRAM SO-DIMM
(PC2-4200) card
v 1 GB DDR SDRAM SO-DIMM
(PC2-4200) card
(maximum of 2048 MB)
Bus architecture v 400 MHz PSB (Processor System Bus)
v 533 MHz PSB
v 333 MHz DDR (Double Data Rate)
SDRAM (Synchronous DRAM) (PC2700)
v 533 MHz DDR-2 (Double Data Rate 2)
SDRAM (Synchronous DRAM)
(PC2-4200)
v HUB link
v PCI bus
v LPC bus
Graphic memory
chip
R50e series:
v Intel 855GM
R51e
series:
v RC410M
R52
series:
v Intel 910GML
v Intel 915GM
v 32 MB DDR SDRAM (ATI M22-32)
v 32 MB DDR SDRAM (ATI M22-64)
v 64 MB DDR SDRAM (ATI M22-64)
CMOS RAM v 242 bytes
(continued)
Product overview
ThinkPad R50e, R51e and R52 Series 49

Lenovo ThinkPad R51e Series Specifications

General

Brand	Lenovo
Model	ThinkPad R51e Series
Category	Laptop
Language	English