Dell XPS G884D Quick Reference Manual page 16

Expansion Bus
Bus type
PCI
connectors
connector size
connector data width
(maximum)
Bus speed
PCI Express
connector
connector size
connector data width
(maximum)
Bus throughput
PCI Express
connector
connector size
connector data width
(maximum)
Bus throughput
PCI Express
Connector
Connector size
Connector data width
(maximum)
Bus throughput
16
Specifications
PCI Express x1, x8, and x16
PCI 32-bit (PCI specification 2.3)
two
124 pins
32-bit, version 2.3
33 MHz
two x1
36 pins
1 PCI Express lane
1 GB/s
one x16
164 pins
16 PCI Express lanes
32 GB/s
one x8 (electrically configured for an x4 card)
98 pins
8 PCI Express lanes
4 GB/s