The 6400 and its Performa variants were discontinued in favor of the uniformly-named Power Macintosh 6500 in August 1997.

Alchemy is generally believed to be superior to its 5200/6200 predecessors since it had a 64-bit data path to main memory.

[2] CPU: All 6400 models use a PowerPC 603ev processor that is soldered to the computer's logic board and cooled by a fanless heat-sink.

[3] Sound: The new "InstaTower" case features an integrated subwoofer speaker and supports SRS surround-sound.

[5] All Performa models shipped with SurfWatch, a product from Spyglass, Inc. that provides adult content filtering capability;[6] content-control software was a significant issue at the time due to the recent passage of the Communications Decency Act in the United States.