Memory

Memory module connector

four user-accessible DDR2 sockets

Memory module capacities

128, 256, 512 MB, 1 GB, or 2 GB non-ECC

Memory type

800 and 667-MHz DDR2 unbuffered

 

SDRAM; SLI memory

Minimum memory

1 GB

Maximum memory

8 GB

 

 

Expansion Bus

 

 

 

Bus type

PCI Express x1, x8, and x16

 

PCI 32-bit

PCI (SLOT5 and SLOT6)

 

connector

two

connector size

124 pins

connector data width (maximum)

32 bits

bus speed

33 MHz

PCI Express (SLOT2)

 

connector

one x1

connector size

36 pins

connector data width (maximum)

one PCI Express lane

Bus throughput

x1 slot bidirectional speed — 2.5 Gbps

PCI Express (SLOT3)

 

connector

one x8

connector size

98 pins

connector data width (maximum)

1 PCI Express lane

PCI Express (SLOT1 and SLOT4)

 

connector

two x16

connector size

164 pins

connector data width (maximum)

8 PCI Express lanes

 

NOTE: SLOT 1 is the primary GFX slot and

 

SLOT 4 is the secondary GFX slot.

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Specifications

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Dell PP521, DCDR01 owner manual 130