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TITLE
Power Macintosh G3 & G3 All-in-one: Video RAM Upgrade
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Article ID:
Created:
Modified:
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30250
11/13/97
4/27/00
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TOPIC
DISCUSSION
The Power Macintosh G3 and G3 All-in-one includes 2 MB of SGRAM on the main logic board. The video RAM can be expanded to 4 MB or 6 MB with an additional 2 MB or 4 MB of SGRAM on a 144-pin SO-DIMM (small outline dual inline memory module). This module is an industry standard upgrade that is also commonly used in PC computers. Some configurations ship with a VRAM module already installed.
Note: The only way to obtain a VRAM upgrade from Apple, is to order the upgrade at the time of purchasing a Build To Order computer from the Apple Store or purchase a configuration with expanded VRAM. Apple does not sell separately a VRAM upgrade for the Power Macintosh G3. VRAM upgrades must be purchased from third-party vendors.
The mechanical characteristics of the VRAM expansion DIMM are 144-pin 8-byte graphics SGRAM SO-DIMM, 3.3 V, 83 MHz/12 ns or faster.
Note: The internal display on the Power Macintosh G3 All-in-one does not support all resolutions listed on the chart, although the video controller does. To select a resolution other than those supported by the internal display, an external monitor that supports the resolution will have to be connected.
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Screen Resolution, in Pixels
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Vertical Refresh, Hz
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Horizontal Refresh, kHz
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Maximum Number of Colors
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2 MB
SGRAM
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4 MB
SGRAM
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6 MB
SGRAM
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512 x 384
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70
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31.488
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16.7 Million
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16.7 Million
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16.7 Million
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640 x 480
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60
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31.469
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16.7 Million
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16.7 Million
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16.7 Million
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640 x 480
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67
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35.000
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16.7 Million
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16.7 Million
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16.7 Million
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640 x 480
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72
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37.861
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16.7 Million
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16.7 Million
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16.7 Million
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640 x 480
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75
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37.500
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16.7 Million
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16.7 Million
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16.7 Million
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640 x 480
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85
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43.269
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16.7 Million
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16.7 Million
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16.7 Million
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640 x 870
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75
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68.850
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32,768
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16.7 Million
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16.7 Million
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800 x 600
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56
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35.156
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16.7 Million
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16.7 Million
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16.7 Million
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800 x 600
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60
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37.879
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16.7 Million
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16.7 Million
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16.7 Million
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800 x 600
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72
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48.077
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16.7 Million
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16.7 Million
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16.7 Million
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800 x 600
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75
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46.875
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16.7 Million
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16.7 Million
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16.7 Million
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800 x 600
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85
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53.674
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16.7 Million
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16.7 Million
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16.7 Million
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832 x 624
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74.5
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49.725
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16.7 Million
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16.7 Million
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16.7 Million
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1024 x 768
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60
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48.363
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32,768
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16.7 Million
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16.7 Million
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1024 x 768
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70
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56.476
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32,768
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16.7 Million
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16.7 Million
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1024 x 768
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75
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60.023
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32,768
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16.7 Million
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16.7 Million
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1024 x 768
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75
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60.241
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32,768
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16.7 Million
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16.7 Million
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1024 x 768
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85
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68.677
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32,768
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16.7 Million
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16.7 Million
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1152 x 870
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75
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68.681
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32,768
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16.7 Million
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16.7 Million
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1280 x 960
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75
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75.000
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256
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32,768
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32,768
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1280 x 1024
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60
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63.981
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256
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32,768
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32,768
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1280 x 1024
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75
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79.976
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256
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32,768
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32,768
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1280 x 1024
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85
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91.146
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256
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32,768
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32,768
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1600 x 1200
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60
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75.000
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256
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32,768
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32,768
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1600 x 1200
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65
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81.250
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256
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32,768
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32,768
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1600 x 1200
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70
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87.500
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256
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32,768
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32,768
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1600 x 1200
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75
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93.750
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256
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32,768
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32,768
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The following five configurations are available only on Power Macintosh G3 computers with the revision 2 logic board. (This excludes the Power Macintosh G3 All-in-one computer.)
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1280 x 960
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75.000Hz
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75.000kHz
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8
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16
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32
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1280 x 1024
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75.025Hz
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79.976kHz
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8
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16
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32
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1280 x 1024
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85.024Hz
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91.146kHz
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8
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16
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32
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1920 x 1080
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59.994Hz
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70.313kHz
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8
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16
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16
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1920 x 1080
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71.992Hz
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84.375kHz
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8
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16
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16
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