Post by Tom Sadler

Name: Red alert in the UK, temperatures hitting 40°C. And as we know, in this country that means everyth
Uploaded: 2026-06-24T10:00:08.717Z
Channel: Tom Sadler
Description: Red alert in the UK, temperatures hitting 40°C. And as we know, in this country that means everything stops. Trains, runways, schools, all of it. Pray for the workstation quietly losing the same fi

Red alert in the UK, temperatures hitting 40°C. And as we know, in this country that means everything stops. Trains, runways, schools, all of it. Pray for the workstation quietly losing the same fight with heat that it's been losing for years. Performance and heat have always been the same conversation. You can have the cores, the GPUs, the memory bandwidth. None of it matters if the silicon throttles because the air around it has given up. For the last couple of years I have been working with CodeZero and Andy Ramgobin to push the limits of HP workstations. Modern silicon throttles at 95 to 100°C. A sustained 5°C rise costs up to 10% of compute. Failure rates double for every 10°C above 20°C ambient. Air cooling has hit its ceiling. Immersion does not have one. Which brings us to this. A HP Z4R, the most powerful rack-mount workstation we build, fully submerged inside a Green Revolution Cooling Pico rack. First time HP has ever seen a Z4R run in liquid immersion cooling. The dielectric fluid is QLOE from Oleon, plant-based and bio-life. Hosted at their R&D labs in Venette, France. Seneca wrote that luck is what happens when preparation meets opportunity. This one took the better part of two years to engineer. So what does this mean outside the lab? The next wave of enterprise AI is not living in a hyperscaler datacentre. It is moving to the edge. Factories, studios, research sites, hospitals. Places where rows of air-cooled racks are simply not viable. Agentic AI workloads sitting next to the data they act on. Inference happening where the decision lives, not three hops away. That shift needs cooling that scales without the noise, the airflow, and the power tax. Immersion is no longer a hyperscaler conversation. It is a workstation conversation now. The part I'm most excited about? Migrating my AI Edge Inferencing stack off the ZGX Nano and onto this Z4R. A workstation sat in plant-based fluid, whilst pushing agentic workloads remotely. The heatwave will pass. The workstation heat problem will not. Glad we're working on the right one. PS - thanks to Branden Card for helping with the Bios! Michael Messier | HP Z Workstations & Solutions | Paul Edmondson | John Shaughnessy #LiquidCooling #EdgeAI #HPZWorkstations #ImmersionCooling #AgenticAI

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