A3640 rev3.1 68040@25mhz CPU Amiga

[Crisisdog]

I've had two desktop A3000s running CybergraphX on a GVP Spectrun 24 board.  The stock 25MHz '030 definitely got a noticeable speed boost in rendering screen redraws and pulling up JPEG images with the A3640 installed.  It was even more noticeable after you get used to it and then yank out the board.  I had no overheating issues, but the original heatsink will be too big to fit under the floppy drive bays.  You'll either need to cut a hole in the sheet metal, or find a lower profile heatsink.  I was lucky enough at the time to find a low profile heatsink that fit and extended off to the sides to allow for more surface area cooling.

I have no comparison for an Amiga 3000 with a 50 MHz '030 chip as originally mentioned, but I did have an A1200 with that chip for a short time, only to still think that the A3000 with the 040 was still faster.

[Ilwrath]

T3000-

This will solve the ram problem with A3640s. X-Calibur If you can find one.

Sure would... I've never even seen one in person, though.  

alexh-

I just assumed that was a typo. I dont think you can get an 030@50MHz card for the A3000 can you?

The Blizzard 4030 would be one.  I believe there was another, but I can't remember for sure.

But, thinking about it more...  Maybe my results with the 3640 on an A3000 are not really relevant, anymore.  I can see where the processor upgrade would help more when also teamed with a RTG video card and more newer expansions.

My 3000D was a fairly basic system, and used quite a while ago (1995/1996 or so...).  There weren't as many '040 optimized routines...  And that A3000 was just running ECS graphics only.  Only one ZorroII card (a fast serial controller).  The system didn't play to the strengths of a 3640.  

I just remember I was hoping for a bigger speed boost than I saw.  It was NOTHING like the performance seen from an A3000 with the Warp Engine '040.

[Lorraine]

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