Dell PowerEdge R730 Owner's Manual page 166

Expansion Bus
Bus type
Expansion cards
Expansion slots using riser card:
Riser 1
Riser 2
Riser 3 (default)
Riser 3 (alternate for GPU)
Memory
Architecture
Memory module sockets
Memory module capacities
LRDIMMs
RDIMMs
Minimum RAM
Maximum RAM
Drives
Hard drives
Eight–hard drive systems
166
PCI Express Generation 3
For a list of supported expansion cards, see
Expansion card installation
(Slot 1) One half-height, low-profile x8 link
(Slot 2) One half-height, low-profile x8 link
(Slot 3) One half-height, low-profile x8 link
(Slot 4) One full-height, full-length x16 link
NOTE: To use slots 1 through 4, both the
processors must be installed.
(Slot 5) One full-height, full-length x8 link
(Slot 6) One full-height, full-length x8 link
(Slot 7) One full-height, full-length x8 link
(Slot 6) One full-height, full-length x16 link
1333 MT/s, 1600 MT/s, 1866 MT/s or 2133 MT/s
DDR4 registered, load-reduced Error Correcting
Code (ECC) DIMMs
Support for advanced ECC or memory optimized
operation
Twenty-four 288-pin
32 GB or 64 GB quad-ranked
4 GB single-ranked, 8 GB, 16 GB or 32 GB dual-
ranked
4 GB with a single processor
8 GB with dual processors (minimum one
memory module per processor)
Up to 1536 GB with dual processors
Up to 786 GB with a single processor
Up to eight 3.5 inch or 2.5 inch, internal,
hot-swappable SAS, SATA, or Nearline
guidelines.