Nvidia's wholly-owned subsidiary, Nvidia US Investment Company, has completed its purchase of a number of 3dfx's graphics assets.

Nvidia and 3dfx signed an asset-purchase agreement last December. 3dfx is selling to Nvidia its patents, patent applications, trademarks, brand names and other graphics-related assets. Nvidia is paying 3dfx $55 million in cash.

An Nvidia spokesperson said: "Subject to the satisfaction of certain additional conditions, 3dfx may receive additional consideration from Nvidia in the form of cash and/or shares of Common Stock of Nvidia Corporation.

"As a result of today's closing, the patent-infringement litigation between Nvidia Corporation and 3dfx will be jointly dismissed without prejudice."