Are all Chip RAM expansion built the same?

Pollock · 09 June 2020, 21:22

I have a 500+ with a 1mb Chip RAM in the trapdoor. I have noticed some newer ones, with an onboard clock, and they would presumably use newer RAM, and it got me thinking, so i thought i would ask, are all trapdoor expansions the same? or what i mean is, will adding a newer board with newer chip RAM, speed up R/WR speeds, and make any difference, even if slightly, or because of the Amiga's architecture, does it not make much difference.

thanks.

Daedalus · 09 June 2020, 22:55

They're made with more modern parts, but ultimately, even the oldest expansions were going as fast as the chip RAM bus can go. Everything there is limited by the speed of the chip RAM accesses, so modern expansions with modern RAM will be exactly the same speed.

Marchie · 12 June 2020, 01:39

No speed difference, but I know that some newer chipmem expensions won't genlock (if you want to do that of course).

09 June 2020, 21:22	#1
Pollock Registered User Join Date: Apr 2018 Location: Glasgow Posts: 161	Are all Chip RAM expansion built the same? I have a 500+ with a 1mb Chip RAM in the trapdoor. I have noticed some newer ones, with an onboard clock, and they would presumably use newer RAM, and it got me thinking, so i thought i would ask, are all trapdoor expansions the same? or what i mean is, will adding a newer board with newer chip RAM, speed up R/WR speeds, and make any difference, even if slightly, or because of the Amiga's architecture, does it not make much difference. thanks.

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09 June 2020, 22:55	#2
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,381	They're made with more modern parts, but ultimately, even the oldest expansions were going as fast as the chip RAM bus can go. Everything there is limited by the speed of the chip RAM accesses, so modern expansions with modern RAM will be exactly the same speed.

12 June 2020, 01:39	#3
Marchie Registered User Join Date: Jul 2016 Location: Sydney / London Posts: 592	No speed difference, but I know that some newer chipmem expensions won't genlock (if you want to do that of course).

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