Dell Precision 7820 Tower, Owner'S Manual, Page: 70 / 105

Expansion card installation guidelines
Depending on your system configuration, the following PCI Express(PCIe)generation 3 expansion cards are supported:
Table 4. Expansion card riser specifications
Expansion card
riser
PCIe slots on the
riser
Processor
connection
Height Length Link Slot width
Riser 1C Slot 1 Processor 1 Full Height Full Height x16 x16
Riser 1C Slot 2 Processor 1 Full Height Full Height x8 x16
Riser 1C Slot 3 Processor 1 Full Height Full Height x8 x16
Riser 2A Slot 4 Processor 2 Full Height Full Height x16 x16
Riser 2A Slot 5 Processor 2 Full Height Full Height x8 x16
Riser 2A Slot 6 Processor 1 Low Profile Half Length x8 x16
Riser 3A Slot 7 Processor 2 Full Height Full Height x8 x16
Riser 3A Slot 8 Processor 2 Full Height Full Height x16 x16
NOTE:
The expansion card slots are not hot-swappable.
The following table provides guidelines for installing cards to ensure proper and mechanical fit. The expansion cards with the highest
priority should be installed first using the slot priority indicated. All the other expansion cards should be installed in the card priority and
slot priority order.
Table 5. No riser configurations
Card type Slot priority Maximum number of cards
NDC NDC Slot 1
PERC 3,1,2 1
GFX/GPU Compute(DW) 1,4,8 3
GFX(FH/SW)
1,4,8,2,5,7
Up to 6
GFX(LP) 6 1
PCIe SSD(LP)-Zoom 2 6 1
PCIe SSD(FH)-Zoom 2 1,2,3,4,5,7,8 1
PCIe SSD (FH)-Zoom 4 1,4,8 2(*see Note 7)
Teradici(P25) (LP)
6 1
Teradici(P25 or P45) (FH) 1,2,4,5,7,8 2
Serial (FH) 1,2,4,5,7,8 1
Serial (LP) 6 1
Audio (FH) 1,2,4,5,7,8 1
Audio (LP)
6 1
70 Tehnologija i komponente