Macintosh Performa 635CD: Same as the Performa 630, but with 5 MB RAM, 2× CD-ROM, Apple Multiple Scan 15 Display and a modem $1,849 USD. Macintosh Performa 636: Same as the Performa 630, sold only to the higher-education market. $1,349 USD. Macintosh Performa 636CD: The Performa 636 with a CD-ROM, sold only to the higher-education market. $1,649 USD. Macintosh Performa 637CD: The 636CD with the monitor, and a 350 MB hard disk Macintosh Performa 638CD: The 637CD without the monitor, but with a TV/video-in card instead - The Performa 638 CD/V shipped with TV tuner card and 15" Multiple Scan Display. Introduced November 3, 1994: Macintosh LC 630: Same as the Performa 630, sold in the K-12 education market. $1,299 USD with 4 MB RAM; $1,949 with 8 MB RAM and a 2× CD-ROM. Introduced April 3, 1995: Macintosh LC 630 DOS Compatible: Same as the LC 630, with an additional 486DX2 processor at 66 MHz and dedicated RAM on a Processor Direct Slot card. This adds the ability to run MS-DOS and Windows 3.1 applications; both operating systems are included with the package. Only sold in the K-12 education market. $1,899 USD. Introduced May 1, 1995: Macintosh Performa 630CD DOS Compatible: Same as the Performa 630CD, but with a second RAM slot, 8 MB RAM standard, 500 MB hard disk, and a DOS emulation card in the PDS slot. Macintosh Performa 640CD DOS Compatible: Same as the Performa 630CD DOS Compatible, sold bundled with a monitor and modem. Not sold in the U.S.. Introduced July 17, 1995: Macintosh Performa 631CD: Like the Performa 630CD, but with a second RAM slot, 8 MB RAM standard, 500 MB hard disk and sold bundled with a monitor and modem Timeline References External links Quadra 630 at apple-history.com Quadra 630 and the DOS compatible models at Low End Mac Quadra 630, LC 630, Performa 630, 631, 635, 636, 637, 638 and 640 at EveryMac.com 0630 630 Quadra 630 Quadra 630 Quadra 630 Quadra 630 Computer-related introductions in 1994 it:Famiglia Macintosh Quadra#Lista Modelli