Upgrading Amiga 2000 CPU IC

[darksun9210]

I've got a supra turbo28, and the speed is exactly what you'd expect of a 68000@28Mhz - with none of the incompatibility issues
however there is a 16k sram cache on the board that the supra is dependent on. and this seems to have problems with zorro2 fast ram above 4meg (nearly typed 4gig by autopilot!)
so the GVP HC8+ and SupraTurbo combo i have will only run at 4meg fast. i can't remember what happens if you go above the ram allowance, if it simply doesn't boot, or the accelerator disables itself as it isn't able to take control of the bus from the original 68k... but i remember that i had problems with 8meg fast for some reason with that accelerator.

if you're after a cheap speed boost, check amibay or ebay for a 68020 card i think is going to be the best return for your money.

[darksun9210]

or for a plug in option, found this on the fleabay
http://www.ebay.co.uk/itm/Amiga-A2630-030-25Mhz-2Mb-Accelerator-for-Amiga-2000-/272552943411?hash=item3f756bdf33:g:qY8AAOSw4A5Ynic3

hope i don't break any rules posting that.

also found the A2000 version of the supraturbo28 for £140

[darksun9210]

i thought getting an 030 board and ok, so only 2meg fast but with the ability bolt on one of Jens's bigram 112meg boards for a paultry £170 off of the wallet tearing rip-off merchant E-of.the.-bay site was a bargin?

have had a look on amibay and there is much more choice there. actually thinking about picking up an A2000 myself now...

people usually have time or money. if you have the time, sharpen your soldering skills and build something, and i have more respect than can be imagined for such folks. only yesterday i found a site for the fpga zorro graphics card with Picasso96 drivers! open source core and software! awesomeness!

but if you have no time, then you'll have to pony up the dough