---
title: "2CRSi: Sandwich GPU cooling for ultra-dense servers"
description: "A French server manufacturer building toward the upper bound of GPU density per rack unit. We developed custom water blocks, including sandwich-style designs that cool one GPU on each face of the same block. This way, the chassis could carry more silicon per slot than air or single-sided liquid could support."
url: "https://www.lmtek.com/custom-engineering/2crsi"
locale: "en"
---

# 2CRSi: Sandwich GPU cooling for ultra-dense servers

A French server manufacturer building toward the upper bound of GPU density per rack unit. We developed custom water blocks, including sandwich-style designs that cool one GPU on each face of the same block. This way, the chassis could carry more silicon per slot than air or single-sided liquid could support.

Client: 2CRSi

Sector: Server hardware · hyperscale density

## What we engineered

Liquid cooling for servers before the datacentre industry had a vocabulary for it. Much of what we now sell as catalogue rack hardware started here.

## Working on a related problem?

[Discuss a related application](/custom-engineering?source=%2Fcustom-engineering%2F2crsi#project-brief)