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[[File:Quadra950.jpg|thumb]]
 
[[File:Quadra950.jpg|thumb]]
 
[[File:D8a92d686b7e243615eb533e9f316045.jpg|thumb]]
 
[[File:D8a92d686b7e243615eb533e9f316045.jpg|thumb]]
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[[File:950.jpg|thumb]]
    
The Macintosh Quadra 950 is a [[Motorola 68040]] and [[NuBus]] based tower. This model was released in March 1992 and discontinued in October 1995. This model replaces the [[Macintosh Quadra 900]], and was the last model to feature 6 expansion slots until the [[Power Macintosh 9500]].
 
The Macintosh Quadra 950 is a [[Motorola 68040]] and [[NuBus]] based tower. This model was released in March 1992 and discontinued in October 1995. This model replaces the [[Macintosh Quadra 900]], and was the last model to feature 6 expansion slots until the [[Power Macintosh 9500]].
    
=General Information=
 
=General Information=
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Announced in May 1992, the Quadra 950 was a "speed bump" of the [[Macintosh Quadra 900]]. The processor was upgraded from a 25 Mhz 68040 to a 33 Mhz. The Quadra 950 sold for $7,200.
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Codenames: Amazon, Zydeco. Introduced in May 1992 and discontinued in October 1995. Originally shipped with system software 7.0.1.
 
===CPU===
 
===CPU===
 
The 950 uses a full [[Motorola 68040]] processor clocked at 33MHz. The [[Macintosh Quadra 840av]] is faster but the 950 was popular for server use.
 
The 950 uses a full [[Motorola 68040]] processor clocked at 33MHz. The [[Macintosh Quadra 840av]] is faster but the 950 was popular for server use.
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MC68040, 32-bit architecture, 33-megahertz clock speed, Integral Paged Memory Management Unit (PMMU), Floating Point Unit (FPU), and 8-kilobyte cache architecture.
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===Memory===
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Comes with 8 megabytes of RAM standard and 8 memory expansion slots for SIMMs (Single In-line Memory Modules). Expands to up to 64 megabytes of RAM by installing 4-megabyte SIMMs in the empty slots and replacing existing 1-megabyte RAM SIMMS with 4-megabyte RAM chips.
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===Video===
 
===Video===
 
The video RAM (VRAM) in the Macintosh Quadra 950  uses 80 ns devices instead of the 100 ns devices used in the [[Macintosh Quadra 900]]. The video controller (DAFB) has been reprogrammed to take advantage of the faster VRAM, speeding up video performance by as much as 20%. That speed increase is in addition to the increase due to the 33 MHz processor speed. The cumulative increase in video performance can be as much as 50% overall.
 
The video RAM (VRAM) in the Macintosh Quadra 950  uses 80 ns devices instead of the 100 ns devices used in the [[Macintosh Quadra 900]]. The video controller (DAFB) has been reprogrammed to take advantage of the faster VRAM, speeding up video performance by as much as 20%. That speed increase is in addition to the increase due to the 33 MHz processor speed. The cumulative increase in video performance can be as much as 50% overall.
    
Like the [[Macintosh Quadra 900]], the Macintosh Quadra 950  comes with 1 MB of video RAM (VRAM) and sockets for expanding the VRAM to a total of 2 MB. The 1-MB VRAM  configuration supports up to 24 bits per pixel on Apple’s 12-inch RGB monitor, 16 bits per pixel on the 13-inch and 16-inch RGB monitors, and 8 bits per pixel on 21-inch Apple monitors. The 2-MB VRAM configuration supports up to 24 bits per pixel on Apple’s 12-inch, 13-inch, and 16-inch RGB monitors and 16 bits per pixel on Apple’s 21-inch RGB monitor. The Macintosh Quadra 950 also supports 19-inch monitors with 1024 by 768 pixel displays. With 2 MB of VRAM, the Macintosh Quadra 950 supports up to 16 bits per pixel on such monitors.
 
Like the [[Macintosh Quadra 900]], the Macintosh Quadra 950  comes with 1 MB of video RAM (VRAM) and sockets for expanding the VRAM to a total of 2 MB. The 1-MB VRAM  configuration supports up to 24 bits per pixel on Apple’s 12-inch RGB monitor, 16 bits per pixel on the 13-inch and 16-inch RGB monitors, and 8 bits per pixel on 21-inch Apple monitors. The 2-MB VRAM configuration supports up to 24 bits per pixel on Apple’s 12-inch, 13-inch, and 16-inch RGB monitors and 16 bits per pixel on Apple’s 21-inch RGB monitor. The Macintosh Quadra 950 also supports 19-inch monitors with 1024 by 768 pixel displays. With 2 MB of VRAM, the Macintosh Quadra 950 supports up to 16 bits per pixel on such monitors.
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===Expansion===
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5 [[NuBus]], 1 PDS.
    
===PDS===
 
===PDS===
 
The PDS attaches to the pins of the MC68040 without any buffers. For a PDS card to operate properly in the Macintosh Quadra 950 , the card must be capable of meeting the 33 MHz timing specifications of the MC68040.
 
The PDS attaches to the pins of the MC68040 without any buffers. For a PDS card to operate properly in the Macintosh Quadra 950 , the card must be capable of meeting the 33 MHz timing specifications of the MC68040.
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===ROM===
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1MB ROM. AppleTalk version 56.0.2.
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===Physical Dimensions===
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Height: 18.6 in. (47.3 cm), Width: 8.9 in. (22.4 cm), Depth: 20.6 in. (52.3 cm), Weight: 36 lb. 12 oz. (16.7 kg). Weight varies based on installed components.
    
=Notes=
 
=Notes=
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=Documentation=
 
=Documentation=
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* [[Macintosh Quadra 900/950/AWS 95 Service Source]]
 
* [[Macintosh Quadra 950 Developer Note]]
 
* [[Macintosh Quadra 950 Developer Note]]
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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:1992]]

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