Dell Vostro A840 Setup And Quick Reference Manual page 22

Specifications
System Information Vostro A840
Chipset Intel GM965 Express/ICH8M
Data bus width 64 bits
DRAM bus width dual-channel (2) 64-bit buses
Processor address 36 bits
bus width
Flash EPROM 2 MB
Graphics bus internal
PCI bus 32 bits
Memory
Memory module connector two user-accessible SODIMM sockets two user-accessible SODIMM sockets
Memory module capacities 512 MB, 1 GB, 2 GB
Memory type
22
Vostro A840
4-GB capable
DDR2 SODIMM
Vostro A860
Intel GM965 Express/ICH8M
64 bits
dual-channel (2) 64-bit buses
36 bits
2 MB
internal
32 bits
Vostro A860
512 MB, 1 GB, 2 GB
4-GB capable
DDR2 SODIMM