A twice-signed Jensen Huang workstation GPU sold for nearly 10 times its initial estimate.

The “RTX Pro 6000 Blackwell Workstation Edition” sold for $57,450 as part of RR Auction’s “Steve Jobs & the Computer Revolution: The Apple 50th Anniversary Auction Part Two” lot. Bidding concluded on Thursday.

The workstation-edition GPU is expensive on its own, ranging from $12,000 to $16,000. While video game graphics cards made Nvidia famous (and Huang has signed his fair share of those), this system is built for intensive tasks like AI development. Nvidia calls the item “the most powerful desktop GPU ever created.”

Of the entire lot, a rare and…