Yup, 7Mhz for A500 I remember it, the only real CPU upgrade was to drop in a MC68EC010 processor which got you a little extra oomph without raising the clock speed. On my A1200 I ran a MC68EC030+FPU at 28Mhz which outperformed my A2000 running an MC68030+FPU at 30/40Mhz? because of the 32bit bus on the A1200.
Yet despite my upgraded CPU's in most of mine I found Amiga's where dog slow at any CPU driven task. You have to remember at the launch of the A1200 with it's 14Mhz CPU the PC had just launched the 486 at 25Mhz, it wasn't long before the PC had dx4-100Mhz and the Miggy was still crawling along at 14Mhz.
I dont recall the CPU in my A4000, I think it's the standard /40 model with an MC68040 at 25Mhz, but the fastest Amiga I got to work on was a MC68060 at 50 or 60Mhz (+FPU) and by then PC's where a quarter the price and already at 90Mhz.
The point is, they where dog slow when it came to doing anything on the CPU and there's only so much extra boost you get from a good chipset, if that wasn't true, we'd all be using Apple's right now.
Yet despite my upgraded CPU's in most of mine I found Amiga's where dog slow at any CPU driven task. You have to remember at the launch of the A1200 with it's 14Mhz CPU the PC had just launched the 486 at 25Mhz, it wasn't long before the PC had dx4-100Mhz and the Miggy was still crawling along at 14Mhz.
I dont recall the CPU in my A4000, I think it's the standard /40 model with an MC68040 at 25Mhz, but the fastest Amiga I got to work on was a MC68060 at 50 or 60Mhz (+FPU) and by then PC's where a quarter the price and already at 90Mhz.
The point is, they where dog slow when it came to doing anything on the CPU and there's only so much extra boost you get from a good chipset, if that wasn't true, we'd all be using Apple's right now.