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Power Macintosh 6500: Difference between revisions
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=General Information= | =General Information= | ||
===Memory=== | |||
The RAM expansion slots accept the 8-byte DIMM (dual inline memory module). As its name implies, the 8-byte DIMM has a 64-bit-wide data bus. The DIMM slot accommodates 168-pin 5-volt fast-paged and EDO DRAM DIMMs. | |||
===Video=== | ===Video=== | ||
===Cache=== | |||
The main logic board has a slot for a second-level (L2) cache on a DIMM. The L2 cache DIMM contains the cache controller, tag, and data store memory. It is a lookaside cache, which is connected to the PowerPC 50 MHz processor bus. | |||
=Notes= | =Notes= | ||
Revision as of 15:15, 24 June 2020
The 6500 replaces the Power Macintosh 6400 and is the last model of the "6000" series Macintosh computers. The 6500 was offered in speeds between 225-300MHz using the PowerPC 603e processor.
General Information
Memory
The RAM expansion slots accept the 8-byte DIMM (dual inline memory module). As its name implies, the 8-byte DIMM has a 64-bit-wide data bus. The DIMM slot accommodates 168-pin 5-volt fast-paged and EDO DRAM DIMMs.
Video
Cache
The main logic board has a slot for a second-level (L2) cache on a DIMM. The L2 cache DIMM contains the cache controller, tag, and data store memory. It is a lookaside cache, which is connected to the PowerPC 50 MHz processor bus.
Notes
QuickDraw 3D Acceleration and Video Memory
The logic board provides 2 MB of video memory for support of display modes up to 1152 by 870 at 16 bits of resolution. The largest supported display size is useful for standard 2D applications. For 3D applications, the 2 MB of video memory space is used differently, which restricts the useful display size and supported bit depth. For example, QuickDraw 3D utilizes double buffering if the hardware supports it. Double buffering immediately reduces the available video memory for application use. In addition, 3D applications that use a Z buffer for hidden texture removal have even less space available for caching textures to increase graphics rendering speed. To get the most performance out of 3D applications in the 2 MB of video memory, the display mode size should be reduced. A 512-by-384 display mode is provided specifically for increasing the available memory space for texture caching to improve 3D graphics rendering speed.