My A500+ Project

[derringer3]

I upgraded my a500 (which was trully an a500+ but only ks1.3 and 1/2meg ram)
You can see the result of my signature.
You can install os3.5 or even 3.9 if you have more than 6Mb ram and a turbo cpu card, but prepare yourself that it will be dog slow. I recommend the 3.1 os.  

[derringer3]

I have an m-tec cpu turbo card. It can insttalled into the socket of the 68000 cpu in the motherboard of the a500(+)
I think it is one of the slowest 68030 cpu card in the amiga. Anyway it is more than 5 times faster than the original 68000 cpu at 7MHz. The seconf one is the FPU (68882) but it is not so much used in the wolrd of amiga.

[derringer3]

i recommend ebay too.

Try different sites. So for exapmle ebay.de and ebay.com etc. The result will be different.
Two years earlier at least 2 pcs of a500 accelerator hit the ebay.de site so it is not impossible to get one. I buy mine for more than 100 Euro, so it will be not cheap.
Try to get an accelerator with onboard ram, or ram slot. this will be the fastest ram.

For example i have an a500 which is the latest revision. So it is truly an a500+ motherboard. It has 512 ram by default, but i can solder an additional 512kb ram to it because it had the space on the pcb. I had an a501 (512kb ram expander)clone so then i have continuous 1,5MB chip ram on my machine.

I has an ide controller which has got ram slot, but i can't use it because the ram of theaccelerator card ram and the ram expansion of the controller is incompatible with each other.