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Author Topic: Gfx card RAM - What do people need?  (Read 2420 times)

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Offline RW222

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Re: Gfx card RAM - What do people need?
« on: October 11, 2007, 12:59:19 AM »
Not only late ISA but VLB and early PCI cards had the right chips, the 16Bit wide 40 pin SOJ ones. They come off real easy if you scrape underneath the pins with a sharp blade. You can cull cards for chips for SOJ upgrade sockets like that, don't even need to clean them up well beyond making sure nothing is shorting, coz the sockets grip on the sides of the pins.
RW222: A1200 (early commodore) A1220 Turbo+4MB, A500x2.
 

Offline RW222

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Re: Gfx card RAM - What do people need?
« Reply #1 on: October 13, 2007, 06:13:16 PM »
-35 is 35 nano seconds minimum access time. Equivalent to about 28.5Mhz maximum clock rate. The other number is probably just an internal code to ID which machine, line or die packaged it, or a date code.

Edit: Oh yes, beware, the good S3 virge cards would have had 35ns RAM on but the cheaper ones used 50 or even 60ns ... with lots of wait states programmed one would presume. Got 3 or 4 S3 cards kicking around somewhere but only one has the 35ns on it. I think though that the 4MB ones are a safer bet, it's the 2MB ones that cheap out.
RW222: A1200 (early commodore) A1220 Turbo+4MB, A500x2.