Nexalus has spent years cooling dense multi-GPU systems that run flat out around the clock. Every Nova server carries that complete thermal system, not an add-on cold plate.
Each part adds a few percent. Stacked together, the loop outperforms every alternative we've tested.
Coolant is fired straight at the hottest spots on each GPU and the CPU, cutting resistance at the first and most important boundary.
A low-resistance thermal interface between silicon and cold plate, so less heat is left behind at the chip.
10 aerospace-grade micropumps in 5 loops. Many small pumps beat a few large ones on efficiency and redundancy.
Equal-length runs send every GPU the same flow. No weak slot, no hot card holding the server back.
The densest radiator the 4U frontal area allows, with many small fans that can lose one without losing the server.
Jet impingement needs very little pressure, so the loop runs gently. Medical-grade tubing, rated well above operating pressure.
Air-cooled GPUs need two slots each for their heatsinks and fans. A Nexalus liquid block needs one. That's how eight full-power, 600 W GPUs fit in one 4U server with one CPU and one board.
Modern NVIDIA GPUs raise their clocks when they have thermal headroom and pull them back when they run hot. Keep every card cool and they hold their boost hour after hour. That's where the extra tokens come from.
Same GPU model and LLM. Test harnesses differ; see benchmark notes.2
One server design, three deployment steps. No redesign between them.
Nova slides into an existing air-cooled 19-inch rack. No facility change.
Two rear quick-connects send the heat out as water at up to 60 °C.
Heat is captured at source, so the data hall no longer needs air conditioning for the servers.
Heat is mixed into room air, chilled back out, then evaporated away: three stages of plant after the server.
60 °C water is hotter than outside air on the hottest day, so a dry cooler rejects it all year. No compressors, no chilled water.
In a sealed rack the room no longer needs air conditioning for the servers.
Closed loop with dry coolers. Nothing lost to cooling towers.
10 pumps in 5 loops, 16 fans and 2+2 redundant power supplies. One part fails and the server keeps running.
Liquid holds the chips at a steady temperature, which cuts the thermal cycling that wears solder joints and capacitors.
Quick-disconnect fittings let you swap parts without draining the loop.
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