Dell Studio XPS 1645 (Late 2009) - Manual (Page 65)

63
Basic Specifications
Computer Information
System chipset
Studio XPS 1640 Intel PM45
Studio XPS
1645/1647
Intel PM55
Data bus width 64 bits
DRAM bus width dual channel (2)
64‑bit buses
Graphics bus PCI‑E X16
PCI bus 32 bits
Processor address
bus width
32 bits
Flash EPROM
Studio XPS 1640 16 Mbit
Studio XPS
1645/1647
32 Mbit
Memory
Connectors
two internally‑
accessible SO‑DIMM
sockets
Capacities 512 MB, 1 GB, and 2 GB
Memory type
Studio XPS
1640/1647
1066 MHz DDR3
SO‑DIMM
Studio XPS 1645 1333 MHz DDR3
SO‑DIMM
Memory configuration possible
Studio XPS 1640 1 GB, 2 GB, 3 GB, and
4 GB
Studio XPS
1645/1647
1 GB, 2 GB, 3 GB, 4 GB,
and 8 GB
NOTE: For instructions on upgrading
your memory, see the Service Manual at
support.dell.com.