|
As others write, it is not so much the current rating but more likely the voltage ripple and level. It could likely be due to the fact that these PSUs are old and the capacitors in them are not good any longer so the output voltage has more ripple than it should have. Also, the PSU connector could have some oxidation on it which will cause some resistance in the supply line, lowering the voltage. Totally that means the CPU will not get enough voltage all the time. Simply recapping the PSU (and the Amiga if it hasn't been done already) might do the trick to restore a more stable supply voltage.
If you took a 1000W ATX PSU and modded it for Amiga usage, you might find that it could possibly still be unstable as modern PSUs are not designed with a low noise 5V supply line in mind. PCs mainly draw power from 12V so this is where the focus is.
|