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Before it lands

Site readiness

Power and water move a delivery date, not the hardware. Check these against your hall early, and send them with your first message.

The envelope

Reference values

A B300 node draws roughly 14 kW. Four of them in a rack is 56 kW, which one 100 kW CDU carries with headroom to spare. The figures below are the reference envelope for a liquid cooled rack. Check them against your hall early, because power and water are what move a delivery date, not the hardware.

A rack holding four nodes and a switch, connected through a manifold to a coolant distribution unit by supply and return lines. SWITCH DGX B300 10U / 14 KW DGX B300 10U / 14 KW DGX B300 10U / 14 KW DGX B300 10U / 14 KW SUPPLY / 0 TO 123 LPM RETURN CDU 100 KW
Rack loop, four nodes to one CDU
Facility
Ambient air temperature
Below 35 °C
Relative humidity
Below 85%
Rack size
750 x 1200 mm
Allowable rack weight
Above 1000 kg
Coolant loop
Fluid type
Water
Supply flow rate
0 to 123 LPM
Supply temperature
2 °C to 45 °C
Pump head, CDU pressure drop
0 to 200 kPa
Cooling capacity
100 kW per CDU
Supply route
Through raised floor
Filtration
Strainer, below 300 µm
Loop hardware
Facility water connectors
1.25 in cam-lock, male and female
Shutoff ball valves
Supply and return
Circuit setter
Return side
Bypass, drain valves, expansion tank
Present
Water quality
Standard
ASHRAE, purified water
pH
6.5 to 8
Conductivity at 20 °C
Below 10 µS/cm
Turbidity
Below 1 NTU
Metals
Below 0.1 ppm
Chloride, nitrate, nitrite, sulfate
Below 0.5 ppm each
Bacteria
Below 100 cfu/mL

Reference envelope for a liquid cooled rack. Your binding figures come from the integration partner's site survey and govern over anything shown here.

NVIDIA, DGX, Blackwell, NVLink, ConnectX, and BlueField are trademarks of NVIDIA Corporation. Rhovan is an independent supplier and is not affiliated with or endorsed by NVIDIA Corporation. Specifications are published by NVIDIA and are subject to change.