Frore Systems has introduced LiquidJet, a coldplate that supports existing AI GPUs, such as Nvidia's Blackwell, with a 1,400W thermal design power. It can scale its performance for next-generation processors, such as Nvidia's Feynman, which will feature a total power of 4,400W. The new coldplates feature 3D short-loop jet-channel microstructures that increase hotspot power density of a whopping 600 W/cm^2 and reduce pressure loss by four times compared to conventional coldplates. In the end, Frore's LiquidJet is ready for multi-kilowatt AI GPUs set to arrive in the coming years.
Modern AI GPUs like Nvidia's Blackwell AI system-on-chips (SoCs) consume an extreme amount of power and therefore require liquid cooling. Modern copper coldplates feature relatively long 2D microchannels with small cross sections that are CNC-machined or skived from high-purity copper blocks. Because these microchannels are long, liquid must travel farther and rub against more surface area, which increases hydraulic resistance and reduces pressure, which affects performance. Frore says that its LiquidJet coldplates with 3D short-loop jet channel microstructures reduce hydraulic resistance and therefore maintain higher pressure inside to boost performance.
