Apple PERFORMA 6300 User Manual

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Te chnical
Information

Specifications for Macintosh Performa 6300 series computers

Technical Information

Main unit

Processor

m PowerPC™603e processor at 120 megahertz (MHz) clock frequency

(includes built-in floating-point unit)

Memory

m A minimum of 12 megabytes (MB) of dynamic random-access memory

(DRAM) installed in one 72-pin DRAM SIMM socket.

m A second 72-pin DRAM SIMM socket; RAM can be expanded to 64 MB

(80 nanoseconds)

m 4 MB of read-only memory (ROM)
m 256K level 2 cache memory on 64-bit PowerPC bus
m 1 MB DRAM frame buffer on board (for video support)

WARNING

only an Apple-certified technician install additional RAM. Consult the
service and support information that came with your Apple product for
instructions on how to contact an Apple-authorized service provider or
Apple for service. If you attempt to install additional RAM yourself,
any damage you may cause to your equipment will not be covered by
the limited warranty on your computer. See an Apple-authorized dealer
or service provider for additional information about this or any other
warranty question.

Disk drives

m Apple SuperDrive 1.4 MB with auto-eject
m Internal IDE hard disk drive (several capacities available)
m Optional internal, tray-loading CD-ROM drive (5.25-inch, 1/2-height

8X-speed)

m A combination of up to seven internal and external SCSI devices can be used.

To avoid damage to your computer, Apple recommends that

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CD-ROM specifications

m Disc diameter 120 millimeters (4.7 inches)

and 80 mm (3.1 inches)

m Scanning velocity 1.2–1.4 meters per second (normal speed)
m Rotation speed (varies over radius):

Normal speed ~530 to 230 revolutions per minute (rpm)
Double speed ~1060 to 460 rpm
Eight-times speed ~4240 to 1840 rpm

m Average latency (varies over radius):

Normal speed ~55 to 130 milliseconds (ms)
Double speed ~27.5 to 65 ms
Eight-times speed ~6.88 to 16.25 ms

m Blocks per rotation ~8.4 to 19.5 variable
m Average access time (typical):

Normal speed 380 ms
Double speed 270 ms
Eight-times speed 160 ms

Data

m Data capacity 656 megabytes (MB), Mode 1

748 MB, Mode 2

m Number of blocks per disc 336,150
m Data per block 2048 bytes, Mode 1

2336 bytes, Mode 2

m Address description Minutes, seconds, blocks

Audio capacity

m Playing time 74 minutes, 42 seconds

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