CoolIT Systems has debuted a new prototype liquid cooling coldplate it claims can cool chips more than three times more powerful than the current generation of Nvidia GPUs.
The company this week announced a 4,000W-ready single-phase direct liquid cooling (DLC) coldplate – more than doubling the previously accepted limits of single-phase direct liquid cooling.
“CoolIT continues to lead the industry in performance. We are thrilled to show silicon leaders that single-phase DLC will continue to be a key enabling technology with demonstrated capability for up to 4,000W processors,” said Kamal Mostafavi, VP of engineering at CoolIT. “Single-phase direct liquid cooling – known for being the most mature, reliable and scalable liquid cooling technology – is also more than capable of cooling ultra-high watt microprocessors for the foreseeable future.”
Nvidia’s Blackwell GPUs can currently operate at up to 1,200W, with the previous-generation H100s scaling up to a thermal design point (TDP) of 700W. AMD’s MI355X operates at a TDP of 1,100W.
After around 700W, air cooling for chips becomes increasingly difficult, and liquid-cooling becomes a more suitable option.
Single-phase DLC works by removing heat from semiconductors with water or a water-glycol mixture running through coldplates attached to the chips. Coldplates transfer heat from the device to a liquid that flows through the plate to a heat exchanger and dissipates the heat.
In its tests, CoolIT said the new coldplate captured more than 97 percent of heat from a 4,000W thermal test vehicle (TTV) with a flow rate of six liters per minute (LPM). The coldplate has a form factor of 50mm x 50mm (slightly smaller than a Blackwell GPU), and features the company’s Split-Flow technology and OMNI all-metal design.
Nvidia is set to announce at least some details of its next data center GPUs, Vera Rubin and Blackwell Ultra, at its GTC event later this month. Blackwell Ultra, also known as GB300, is set to operate at a 1,400W TDP.
Founded in 2001, CoolIT designs, engineers, and manufactures advanced liquid cooling solutions for the data center and desktop markets, including its split-flow direct liquid cooling technology. The company was acquired by KKR and Mubadala last year.
