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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: tonyvdb on December 17, 2005, 09:41:42 PM
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Ok, as I am not very hardware knolagable this may see like a dumb question.
Can a person with the stock 040 25mhz 3640 board replace the Motorola chip with a faster one like the 060 50mhz or is there other factors that make this impossible?
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No you can't. I did overclock this board to 33Mhz back in the day but it got very HOT and would lock up my A4000 so this is not recommended. I would just bite the bullet and get a faster board like a Cyberstorm MKII/III or GVP 4060.
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@TjLaZer wrote:
I would just bite the bullet and get a faster board like a Cyberstorm MKII/III or GVP 4060.
Why not the Cyberstorm MK1? It's faster than the MKII anyway...
:-)
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Why not the Cyberstorm MK1? It's faster than the MKII anyway...
Well for one, it is harder to find, bulkier and more problematic. It is a beast, might as well get the smaller, streamlined ones I mentioned. But hey if you can get a MK1 for a song then why not! But I doubt it.
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@TjLaZer wrote:
Well for one, it is harder to find, bulkier and more problematic...But hey if you can get a MK1 for a
song then why not! But I doubt it.
A.A.M.O.F. I got one in my A4000D.
A genuine CyberStorm MK-I !!! With 128MB onboard,
and it's not problematic at all! Runs like a charm!
:lol:
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The MK1 is faster thn the MKII ?
:inquisitive:
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Not AFAIK. And in space crammed systems like the A3000/4000 you don't want one in it! Thats all I know. Might work well but if you are going to get a 060 card get a MKII/III or GVP IMHO...
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The CS MK-I works fine in my A4000D. I never had any
problems. And yes, it's faster then the MK-II.
:-)
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The CS MK-I works fine in my A4000D. I never had any
problems. And yes, it's faster then the MK-II.
:-)
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to fully answer the original question. it is concievable to put an 060 on the a3640 however...
-the 060 runs on 3.3 volts the 040 at 5 so you would need a votage regulator socket to make the change. only one company that i know of makes such a regulator for 060 and it costs about 2-3 times what the above accelerators do.
-the 060 also has a slightly tigher timing spec compared to the 040 and since the a3640 and a3000d are a bit loose timing wise it is likely to be a problem. 3000t 4000 and 4000t systems and 3000d systems with all new rev. chips with a 3.2 a3640 might be ok
-finally any rom on board or os rom that detects the a3640 specifically and uses 040 specific features may have problems. AFAIK this is not a problem.
BTW a sonnet quaddoubler 040 mac accelerator would put a 50mhz 040 on the a3640. there is also a ram expansion specificly for the a3640 that adds much faster ram although i cant remeber the name of it right off.
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@AmiDude & X-Ray:
Could you two do a "bustest (http://aminet.net/package.php?package=util/moni/bustest.lha) fast" run with your respective card and paste it here?
/Patrik
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tonyvdb: 33 Mhz overclocking is extreme, but 32 mhz (64 Mhz crystal) should work without any problem, just replace the crystal and that´s it :lol:
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there is also a ram expansion specificly for the a3640 that adds much faster ram although i cant remeber the name of it right off.
IIRC it is called XCalibur, but might be diffivult if not impossible to get hold of.
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@ Patrik
Unfortunately I cannot do that test because at the moment my MKII is in storage and my PPC card is being used.
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I mhz of difference is that extreme?
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xcaliber thats right. i saw one once i heard it speeds the a3640 up alot.
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According to this link (http://members.iinet.net.au/~davem2/overclock/a3640.html) it does seem to make a difference ...
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Thanks for the info guys, I had a look at the spare 3640 board that I bought on ebay and it was aparently overclocked to 32mhz and it seems that the modifications stated in the above thread were done to it. I just tested it out and it seems to work well.
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tonyvdb wrote:
Ok, as I am not very hardware knolagable this may see like a dumb question.
Can a person with the stock 040 25mhz 3640 board replace the Motorola chip with a faster one like the 060 50mhz or is there other factors that make this impossible?
Well, you theoretically could if you had something like this:
(http://www.amigadeals.com/ebay/amiga/mystery/adapter-side.jpg)
(http://www.amigadeals.com/ebay/amiga/mystery/adapter-top.jpg)
(http://www.amigadeals.com/ebay/amiga/mystery/adapter-bottom.jpg)
But from the notes I eventually ran across here the 2 or 3 of these 68060->68040 adapters they tried in an Amiga 4000 (3640) never did run stable enough to offer as a retail product (this is back in 1994/95).
What this animal appears to be is one of these S68060-2 Smart Socket (http://www.emulation.com/catalog/off-the-shelf_solutions/production-test_adapters/upgrade_motorola/) from emulation.com (or one of their first generation models) -- but at $430 listed price it seems rather... extremely rediculous?