ASUS Serversystem Pro E800 G4 4 GPU support

Specifications
Processor / System Bus
1 x Socket P (LGA 3647)
Intel® Xeon® W-3200 Processors
Core Logic
Intel® C621 Chipset
Memory
Total Slots : 12 (6-channel per CPU, 12 DIMM per CPU)
Capacity : Maximum up to 1536GB RDIMM
Memory Type :
DDR4 2933/2666
Memory Size :
128GB, 64GB, 32GB, 16GB RDIMM/LRDIMM
Expansion Slots
Total 5 slots
Location-1: PCIe x16 slot (Gen3 x16 link, FH, FL), will be occupied when NVMe riser card is installed.
Location-3: PCIe x16 slot (Gen3 x16 link, FH, FL)
Location-4: PCIe x16 slot (Gen3 x4 link, FH, FL)
Location-5: PCIe x16 slot (Gen3 x16 link, FH, FL)
Location-7: PCIe x16 slot (Gen3 x16 link, FH, FL)
Storage
SATA Controller :
Intel® C621
8 x SATA3 6Gb/s ports + 1 x M.2 connector (SATA 6Gb/s & PCIe® Gen3 x4 link)
Intel® Rapid Storage Technology Enterprise(RSTe) (For Windows Only)
(Support Software RAID )
SATA Controller :
ASMedia® SATA 6Gb/s controller
2 x SATA3 6Gb/s ports
Drive Bays
8 x Internal 3.5" or 2.5" Tooless Storage Bays
(Backplane supports 4 x SATA/SAS + 4 x SATA/SAS/NVME devices)

1 x M.2 Socket 3, up to 22110 type (SATA mode & PCIe Gen3 x4 link)

Optional Kit: ASUS NVMe riser/PIKE card is needed for NVMe/SAS devices.
Auxiliary Storage FDD/CD/DVD
2 x 5.25" media bays
(Optional DVD-ROM/DVD-RW)
Networking
1 x Dual Port Intel X550-AT2 10GbE LAN controller
Front I/O Ports
4 x USB 3.2 Gen1 ports
1 x Headphone jack
1 x Microphone jack
Rear I/O Ports
2 x USB 3.2 Gen2 ports (1 x Type-A, 1 x Type-C)
4 x USB 3.2 Gen1 ports
2 x 10GbE LAN ports (RJ45)
5 x Audio jacks (7.1-channel HD Audio)
1 x Optical S/PDIF output
1 x COM port (optional)
1 x VGA port (optional, from BMC)
Switch/LED
Front:
1 x Power Switch/LED
1 x Reset Switch
1 x HDD Access LED

Rear:
1 x BIOS Flash-back Button
OS Support
Please find the latest OS support from https://www.asus.com/event/Server/OS_support_list/OS.html
Management Solution
ASUS Control Center Enterprise (Optional)
ASMB9-iKVM (on-board)
Regulatory Compliance
BSMI, CE, FCC(Class A)
Dimensions
532mm x 243mm x 582mm
21.0” x 9.5” x 22.9”
Weight
Net Weight: 18.0 kg
Gross Weight: 22.5 kg
Power Supply
2000W Platinum ATX Power Supply (100-240Vac, 15-12A, 60/50Hz)
750W Gold ATX Power Supply (100-240Vac, 9-4.5A, 60/50Hz)
Environment
Operation temperature: 10? ~ 35?
Non operation temperature: -40? ~ 70?
Non operation humidity: 20% ~ 90% ( Non condensing)
Note
* M.2 socket (PCIe mode) shares the bandwidth with Location-4 PCIe x16 slot (Gen3 x4 link).

** An external fan module is required with NVIDIA Tesla cards, and acoustic level will be high.

*** Suggest to use Intel Xeon W-3200 processors which support PCIe slots with full CPU links(64 lanes).
Intel Xeon Scalable processors are supported, but there may be some limitations of CPU links(48 lanes).