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Author Topic: A3640 rev3.1 68040@25mhz CPU Amiga  (Read 4909 times)

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Offline Ilwrath

Re: A3640 rev3.1 68040@25mhz CPU Amiga
« on: January 05, 2009, 12:38:22 PM »
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Absolutley no noticable increase of speed in everyday work...


Yeah, same here.  I ran a Rev 3.2 3640 in my A3000D for a while.  For actual real-world usage, really, very little change over the 25mhz '030/'882 combo.  The only time you'll notice any change is if you're running specific '040 optimized binaries.  (Or a benchmark.  The benchmark numbers look pretty.  They're apples and oranges comparing a '030 with an '040, though...)

And, as others have stated, the memory accessing on the 3640 is terrible.  

I ended up pulling the 3640 and selling it to a guy from a BBS who wanted it.  

Any card with memory on-board is a better choice than a 3640.
 

Offline Ilwrath

Re: A3640 rev3.1 68040@25mhz CPU Amiga
« Reply #1 on: January 05, 2009, 03:10:31 PM »
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Sounds like you were either not running a well patched AmigaOS. Or all you did was load WB and open a folder marked WHDownload

With patches to move as much stuff as you can to FastRAM, to use the CPU instead of the Blitter, SFS etc. the speed increase is noticeable.


Correct me if I'm wrong, but FastRAM and CPUBlit utilities work with '030, as well.  And, since the 3640 offers no on-board memory, there is no speed advantage using a 3640 for these vs. using the standard '030.

Admittedly, I did not test SFS (it wasn't out back then -- this is back in AmigaOS 3.1 days)...  FFS performance was not changed, though.  

The A3000D in question was primarily a backup and general-use machine.  The 3640 did offer better render times for software tuned to use '040 optimizations, but all other general-use operations (desktop/video/word processing) ran about the same.  

Nothing very noteworthy, compared to the amazing improvement a Warp Engine or CyberStorm '040 offers.
 

Offline Ilwrath

Re: A3640 rev3.1 68040@25mhz CPU Amiga
« Reply #2 on: January 05, 2009, 07:39:35 PM »
T3000-
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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-
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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.