NOTE:
Slots two, four, and five are PCIe GEN3 slots. Slot two is the primary graphics slot; slot five is the
secondary graphics slot.
Slots three and four use open-ended PCIe connectors, so a PCIe x16 card can be inserted. This allows the
workstation to support more PCIe x16 expansion cards. A x16 card typically trains and runs at the maximum
lane width available by the expansion slot. The card runs at the reduced lane width, with a corresponding
performance decrease. Graphics cards greater than 75 watts require the use of an auxiliary power cable
adapter.
HP Z640 Workstation installation sequence recommendations
Load
Card description
order
Second System Board
1
(Riser)
2
First PCIe graphic card
Second PCIe graphic card or
3
High Performance GPU
Compute card
4
PCIe 1394b card
5
Third PCIe graphics card
6
Fourth PCIe graphics card
7
SAS card
8
Z Turbo Drive 1st
9
Z Turbo Drive 2nd
10
PCIe audio card
11
PCIe Network (LAN) card
12
eSATA bulkhead kit
13
Serial port bulkhead
NOTE:
Slot sequenced from the rear I/O aperture to the board edge.
Slot 1
Slot 2
Slot 3
Only
Only
Only
Only
1st
3rd
2nd
4th
1st
4th
1st
4th
Slot 4
Slot 5
Slot 6
Only
Only
2nd
3rd
1st
2nd
1st
2nd
3rd
2nd
3rd
1st
2nd
3rd
3rd
2nd
1st
Component replacement guidelines
55