AppleCare Tech Info Library -Macintosh AV Series: Model Differences

TITLE

Macintosh AV Series: Model Differences

Article ID:
Created:
Modified:

12695
7/26/93
8/14/00

TOPIC

What are the major differences between the Macintosh Centris 660AV, the Quadra 660AV, and the Quadra 840AV?

DISCUSSION

The major differences between the members of the Macintosh AV Series are:

Feature	Quadra 840AV	Centris/Quadra 660AV
Processor	MC68040 @ 40 MHz	MC68040 @ 25 MHz
DSP	AT&T DSP3210 @ 66 MHz	AT&T DSP3210 @ 55 MHz
DRAM Expansion	From 8 MB to 128 MB	From 8 MB to 68 MB
DRAM Slots	4 slots	2 slots
DRAM Speed	60 ns (nanoseconds)	70 ns
DRAM SIMM Sizes#	4, 8, 16 and 32 MB SIMMS	4, 8, 16 and 32 MB SIMMS
VRAM	2 MB (1 MB standard)	1 MB (I MB standard)
VRAM Slots	4 slots	none
VRAM SIMM Size	256K	n/a
VRAM Speed	80 ns (nanoseconds)	80 ns
NuBus Slots	3	1*
Power On/Off Control from NuBus cards	Yes	No
PDS Slot	No	Yes - 1
DAV Connector	On Logic Board	On Optional NuBus Adapter Card
MUNI Chip	On Logic Board	On Optional NuBus Adapter Card