Said by various voices in the course of this thread:
>>>What is the advantage of additional VRAM in the above computer? More
>>>resolution? More color?
>>
>>The advantages of adding more VRAM is 2-fold. One aspect is that you
>>can get the screen up to much higher resolutions (1024x768 @
>
> I'm reasonably sure that no Macs attain higher resolutions through the use
> of VRAM, but bit depth is certainly helped.
While this is true of Quadra built-in video, which tops out at 1152x870
(except for the 630 & the like, which top out at 832x624), I was recently
looking at AppleSpec, & they say that some early PCI PowerMacs (namely the
4400, 7/8200) that can have as little as 1 meg of VRAM can't do 1280x1024,
but those upgraded to 2 or more can.
Not sure why. Maybe something to do with bandwidth? These same machines
apparently can't do 1152x870 at millions of colors, even with 4 megs, even
though it's mathematically possible to hold that buffer, because their video
bus can't provide the data bandwidth necessary to refresh the screen 75
times a second.
It's OT here anyway, so enough about it from me, but I just wanted to note
this peculiarity.
--
Over,
Jutso
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