Apple described the Macintosh Processor Upgrade Card as giving a performance increase of " two to four times" for general purposes, or " up to 10 times" for floating point intensive programs. The upgrade card was announced in January 1994 at the MacWorld Expo in San Francisco. ĭevelopment of the card started in July 1993. The Macintosh Processor Upgrade requires and shipped with System 7.5. The Processor upgrade card required the original CPU be plugged back into the card itself, and gave the machine the ability to run in its original 68040 configuration, or through the use of a software configuration utility allowed booting as a PowerPC 601 computer running at twice the original speed in MHz (50 MHz or 66 MHz) with 32 KB of L1 Cache, 256 KB of L2 Cache and a PowerPC Floating Point Unit available to software. The card contains a PowerPC 601 CPU and plugs into the 68040 CPU socket of the upgraded machine. The generically named Macintosh Processor Upgrade Card (code named STP ) is a central processing unit upgrade card sold by Apple Computer, designed for many Motorola 68040-powered Macintosh LC, Quadra and Performa models.
0 Comments
Leave a Reply. |