IBM R50 Series, Hardware Maintenance Manual

Page: 48 / 278

Feature Description
Standard memory 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
Optional memory
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)
Bus architecture
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
Graphic memory
chip
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)
CMOS RAM v 242 bytes
(continued)
Product overview
44
R50/R50p, R51 Series