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Jane Street reveals Texas AI data center with 4,032 GPUs

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Jane Street revealed the interior of its AI training data center in Texas. The facility contains 4,032 GPUs mounted across 56 racks, connected by 8,000 km of fiber and equipped with liquid cooling routed through every server. Technology group co-head Ron Minsky described the firm's earliest compute setup of six Dell servers placed at the end of a desk row so staff could physically disconnect machines during failures.

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#882@DANIELLEFONG @GOSHAWKTRADES

Goshawk Trades@GOSHAWKTRADES

Jane Street just showed the inside of their AI training data center in Texas. 4,032 GPUs. 56 racks. 8,000 km of fiber. liquid cooling running through every server because air cooling can't handle the heat anymore. but the part that got me was the origin story. Ron Minsky, who co-heads their technology group. said their first compute cluster was literally six Dell boxes stacked on top of each other at the end of a desk row. they called it "the hive." the trading systems sat out in the room with the traders because they wanted to be able to unplug them if something went wrong. at one point, someone vacuuming the office unplugged a live trading system in the middle of the day. from six Dell boxes and a vacuum cleaner incident to a liquid-cooled GPU data center processing trades in under 100 nanoseconds. that's a 20-year arc.

2:59 PM · May 15, 2026

Cluster engagement

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#54Dwarkesh Patel@DWARKESH_SP

It was very fun to hear Ron tell the stories of early Jane Street.

Their first cluster was a pile of 6 Dell boxes in their office.

And it was important to them that it be physically in their office so that if something went haywire, they could just physically unplug the machine.

Goes without saying that they can no longer fit their 100s of k of GPUs in their office.

11:16 PM · May 15, 2026 · 59.8K Views