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Product · Liquid Cooling
450 Liquid Cooling Container (L450C20) L450C20DR150 20ft 450 kW Liquid Cooling container · dual loop · GPU 36–45 °C · in-row CW 10/15 °C · no UPS · up to 150 kW/rack

The smallest liquid block
that still runs frontier GPUs.

L450C20 is the 20 ft first placement: 450 kW, 150 kW/rack, dual loop, UPS outside. You pay more per kW than L1240 or L1800 because the box is shorter — that is the price of a bay that still fits. Expansion blocks: 90 days ex-works.

Runs CIOS · →
450 kW
IT Capacity
up to 150 kW/rack
Power Density · R150
Dual loop
GPU 36–45 °C · in-row CW 10/15 °C
90 d EXW
From down payment
01
The one thing

Frontier GPUs in 20 ft — you pay more per kW to fit the bay.

This is the entry cost, not the cheapest kW. L450C20 puts a dual-loop cold-plate hall into a 20 ft ISO box so a first training rack row can sit where a 45 ft High Cube will not. 450 kW IT, R150, UPS in the yard.

Form Factor
20-ft container
SKU ID
L450C20DR150
IT Capacity
450 kW
Cooling
Dual loop · GPU 36–45 °C · in-row CW 10/15 °C
UPS
External — UPS / battery / PDC outside the box
Density
Up to 150 kW/rack (R150)
Status
Available
Lead Time
90 d EXW from down payment · expansion 90 d EXW

Roadmap A separate MDCX power module (UPS / battery / PDC) is in development for sites where the boundary must sit outside the compute enclosure.

L450C20 liquid cooling container cutaway poster
L450C20 — dual loop: GPU warm water 36–45 °C and chilled-water in-row CW 10/15 °C.

Cold plate is the entry ticket for SXM-class density. Why Liquid Cooling →

02
Versus the rest of the line

Not L1240 or L1800: those need 45 ft. This is the door that still fits.

L450C20 is the 20 ft dual-loop liquid block: 450 kW, 150 kW/rack, UPS outside. You pay more per kW than L1240 or L1800 because the box is shorter — that is the price of a first placement that fits an edge bay.

03
Walk through it

Explore L450C20 in 3D

Explore the 20 ft Liquid Cooling container — gullwing doors and rack access.

MDCX L450C20 liquid cooling container

The OpenUSD reference model is published in the annex of the L450C20 Reference Design. Heavy USD is explicit download only. Specs: USD output.

Ready to specify a block?
Talk to sales, or model economics in TCO first.

Single-line power, cooling loops, ratings, and downloads for engineers.

Questions

What is the smallest MDCX liquid cooling block?

L450C20 (L450C20DR150) is the 20 ft Liquid Cooling block: 450 kW IT, up to 150 kW/rack, dual loop, UPS outside.

Why does L450C20 cost more per kW?

You pay more per kW than a 45 ft block because the box is shorter — that is the price of a first placement that still fits an edge bay.

Does L450C20 include a UPS?

No. UPS, battery, and PDC sit outside the 20 ft enclosure. A separate MDCX power module is Roadmap.

How long is delivery for L450C20?

First delivery is 90 days ex-works from receipt of down payment. Expansion blocks: 90 days ex-works.

Specifications updated August 2026 · design targets, site conditions apply.