Is an RTG A2000 same as an RTG A4000?

[AmigaClassicRule]

I know A2000 is an OCS/ECS and an A4000 is AGA so the difference is there. But what if you take a 68060 A4000 RTG vs a 68060 A2000 with the same RTG card. Does that make these two computers identical with the same performance and ability running the same software that uses the RTG card? Would you say the A4000 and A2000 are the same computer if we install RTG instead of custom chip set?

[AmigaClassicRule]

no. a2k has zorro2 and a4k has zorro3 expansion bus, your card if this is z3 rtg card will work faster in a4k.

Is it just speed? Does it mean the software will still run but slower?

[AmigaClassicRule]

Yes.  I used my Picasso IV in my A2000 with the Picasso 96 software.  The card ran in Zorro II mode.  I use the same card and same software with my A4000 and the card runs in Zorro III mode.

What about A3000?

[AmigaClassicRule]

It really depends on a lot of factors. In general, the difference will be noticeable only under certain conditions. A Quake benchmark on a low-res screenmode will be identical on both systems. Scroll through a large picture that exceeds the amount of VRAM on your gfx board (=swapping data over the zorro bus) and the 4000 will perform a little better.



Identical to the 4000.

So really an A3000 will be identical to an RTG A4000, he is better getting an A3000 because it is cheaper than A4000.

[AmigaClassicRule]

Thank you all for clearing everything then . As a conclusion I feel I am a proud owner of an A1200. I also feel I have reached one of the top of the line Amiga models compared to the A3000 and below.

[AmigaClassicRule]

A1200 is cheap and easy to expand, I wouldn't exchange it by an A3000.

 
Do not worry I will not replace my Amiga 1200 for anything in the world.

[AmigaClassicRule]

One real world scenario where the A2000 really fails at in RTG use is flipping high res / bit depth screens. Once you have more of those screens open than will fit in the RTG board's RAM, you will be waiting seconds for the machine to move the new screen into the RTG board.
 
I happened to have a beefy A2000 and I endured this for a while, but quite soon I became so annoyed with it that I dismantled my 060 + RTG A2000 and sold the pieces, went back to using Zorro 3 Amigas. Haven't had an RTG equipped Zorro 2 machine since.

 
Jeesh, that bad huh?

[AmigaClassicRule]

The zorro3 machines are quite a bit quicker than the zorro 2 machines. The 1200 is also full of bottlenecks compared to a A4000 even with mediator.

the 4000 makes the most sense.

Maybe, but A4000 are expensive. They are for 1k in eBay.

[AmigaClassicRule]

You are making me feel sad that I gave away my A4000/040  :cry:

Heheh...

[AmigaClassicRule]

One last thing - PIV and an '060 on the 2000 will only save your behind up to a resolution of 1024x768x16-bit. Push it any further, and Z2 rears its head bigtime...

We are all forgetting one thing.......A2000 is really an A500 in a desktop case.......with zorro slot so ummm the mere fact it can go this far....is a feat, yeah?