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The Quadra 840av is powered by a 40MHz [[Motorola 68040]] making it the fastest Macintosh of the 68K era.
 
The Quadra 840av is powered by a 40MHz [[Motorola 68040]] making it the fastest Macintosh of the 68K era.
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The Macintosh Quadra 840AV combines the raw horsepower of a
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40-megahertz 68040 microprocessor with a 66-megahertz digital signal
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processor (DSP) to achieve outstanding performance. The DSP handles
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telecommunications, speech, and audio functions, allowing the 68040
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processor to perform other tasks, thereby increasing the total system
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performance.
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The exceptional power and built-in features of the Macintosh Quadra
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840AV let you take full advantage of exciting new audio-visual
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technologies. For example, with its built-in GeoPort
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telecommunications architecture, the Macintosh Quadra 840AV can be
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connected with telephone systems, so you can use your computer as a
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telephone, an answering machine, a fax machine, and an electronic mail
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station. Its video capabilities let you view or capture video from a
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VCR, laser disc, or camcorder in a window. You can also connect
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directly to a TV to show your presentations or to a VCR to make
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videotapes.
    
=General Information=
 
=General Information=
The Quadra 840av was the first 68040 Mac to break the 33 MHz barrier. Based on the 40MHz 68040 processor, and housed in a Quadra 800-style case, the 840av included AV features similar to its younger sibling, the [[Macintosh Quadra 660av]]. However, it's AT&T 3210 DSP ran at a faster 66 MHz. It also included one Geoport, and sold for $3,550, which was inexpensive for what was, at the time, the fastest Mac ever.
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The Quadra 840av was the first 68040 Mac to break the 33 MHz barrier. Based on the 40MHz 68040 processor, and housed in a Quadra 800-style case, the 840av included AV features similar to its younger sibling, the [[Macintosh Quadra 660av]]. However, it's AT&T 3210 DSP ran at a faster 66 MHz. It also included one Geoport, and sold for $3,550, which was inexpensive for what was, at the time, the fastest Mac ever. Introduced in July 1993 and discontinued in July 1994.
    
Codenames: Quadra 1000, Cyclone. Originally shipped with [[System 7.1]] and system enabler 088 v1.0.
 
Codenames: Quadra 1000, Cyclone. Originally shipped with [[System 7.1]] and system enabler 088 v1.0.
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===CPU===
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Motorola 68040, 32-bit architecture, 40 Mhz clock speed. Integrated floating-point unit. Paged Memory Management Unit (PMMU). 8 KB Cache.
    
===Memory===
 
===Memory===
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===DSP===
 
===DSP===
 
The Macintosh Quadra 840AV and Macintosh Centris 660AV computers include an AT&T DSP3210 32-bit floating-point digital signal processor (DSP). The DSP gives these computers the ability to perform fast, complex real-time data processing tasks, such as speech recognition, audio compression, analog modem signal processing, and so on. In the Macintosh Quadra 840AV, the DSP runs at 66.6667 MHz; in the Macintosh Centris 660AV, it runs at 55.5000 MHz. The DSP chip contains its own 8 KB of internal RAM, which minimizes its use of system memory.
 
The Macintosh Quadra 840AV and Macintosh Centris 660AV computers include an AT&T DSP3210 32-bit floating-point digital signal processor (DSP). The DSP gives these computers the ability to perform fast, complex real-time data processing tasks, such as speech recognition, audio compression, analog modem signal processing, and so on. In the Macintosh Quadra 840AV, the DSP runs at 66.6667 MHz; in the Macintosh Centris 660AV, it runs at 55.5000 MHz. The DSP chip contains its own 8 KB of internal RAM, which minimizes its use of system memory.
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===Physical Dimensions===
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Height 14.25 inches (30.6 cm), Width 7.75 inches (19.7 cm), Depth  16.0 inches (39.6 cm), Weight 24 pounds (10.9 kg). Weight varies based on installed components.
    
=Notes=
 
=Notes=
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* [[Apple Computer]]
 
* [[Apple Computer]]
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{| class="wikitable" style="background-color:#cbcefb;"
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|+The Macintosh Quadra Series from [[Apple Computer]]
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|-
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|[[Macintosh Quadra 605]] -- [[Macintosh Quadra 610]] -- [[Macintosh Quadra 630]] -- [[Macintosh Quadra 650]] -- [[Macintosh Quadra 660av]] -- [[Macintosh Quadra 700]] -- [[Macintosh Quadra 800]] -- [[Macintosh Quadra 840av]] -- [[Macintosh Quadra 900]] -- [[Macintosh Quadra 950]]
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|}
    
[[Category:Apple]]
 
[[Category:Apple]]
 
[[Category:68040]]
 
[[Category:68040]]
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[[Category:1993]]