Solution · DC45 · Direct Liquid Cooling

DC45 — the compute block
of the AI Factory

A 45-ft containerized module delivering 1.24 MW of IT capacity at 100–150 kW per rack, factory pre-integrated and built for SXM-class GPU clusters — GB300 NVL72, B300 HGX — where air cooling has run out of headroom.

1240 kW
IT Capacity
100–150 kW/rack
Power Density
26 °C TCS
Warm-Water Loop
~6 mo → 75–90 d
First Unit → Repeat
01
What DC45 is

One container. Nine racks. One warm-water loop.

You've seen the business case — modular blocks, BESS-first power, time-to-revenue. DC45 is the Computing Unit in that equation: a 45-ft High Cube container holding 8× 150 kW liquid-cooled racks plus one 40 kW air-cooled rack, with all heat carried to the outdoor side on a single 26 °C warm-water loop. Cold plates sit directly on the GPUs; a rear-door heat exchanger and ceiling units sweep up the rest. Everything is integrated, tested, and sealed at the factory — on site you connect power, water, and network.

Form Factor
45-ft High Cube container
IT Capacity
1240 kW · 8× DLC + 1× air-cooled rack
GPU Platform
GB300 NVL72 · B300 HGX (SXM / NVLink)
Cooling
DLC cold plate + rear-door HX + ceiling units
PUE
≈ 1.15–1.20 — site-dependent*
Lead Time
~185–230 d from contract · 75–90 d repeat

IT Load vs. Facility Load. 1240 kW is what the servers draw. Total facility load is higher once cooling and auxiliaries are added — the gap is set by PUE, which depends on your site's climate. *Cold, dry sites land at the low end. Always confirm which figure an "X MW" requirement refers to.

02
Why Direct Liquid Cooling

For SXM-class clusters, DLC isn't an upgrade. It's the entry ticket.

🔥

It unlocks the density

A cold plate in direct contact with the GPU carries heat out through water — supporting 100–150 kW/rack and beyond, the regime NVLink platforms require and air cooling cannot reach. Junction temperature stays precisely controlled under sustained training load.

🌡️

It runs warm, so it runs efficient

DC45 cools on a 26 °C loop, not legacy 7–18 °C chilled water. At that temperature, dry coolers reject most of the heat directly and mechanical refrigeration stays a trim function — which is what holds PUE near 1.15–1.20, lower in cold, dry climates.

📦

The complexity is ours, not yours

DLC adds real engineering — coolant loops, leak detection, redundant pumps. DC45 absorbs all of it into one tested, standardized module. You get the density without owning the integration risk.

03
Go deeper

Inside the technical deep-dive

The full engineering model is live and interactive — every number computed from the same physics engine our design team uses, referenced to ASHRAE W50 and the NVIDIA GB300 design envelope.

🧊

Interactive 3D container

Walk the rack rows, piping, and cooling units of the actual DC45 layout.

📊

Thermal load breakdown

See how 1.24 MW of heat splits across cold plates, rear doors, and room air.

💧

Water loop design

Flow rates, temperatures, and pump head for each configuration you choose.

🌍

Power & PUE by climate

Set your site's ambient conditions and watch efficiency respond.

Ready to see the engineering?
Configuration is engineered by Fog — pricing goes through your account manager.