>> trag said:

If the 128MB SIMMs have parity chips on board, removing those could make the difference by reducing load. Although, do parity chips draw current on the address lines? Click to expand...

The following info from ChatGPT needs to be vetted, but it does make sense...



And here are excerpts from the "KM44C16000.pdf" datasheet kindly provided by @trag that seems to confirm that chip currents are not pulled through the Address lines...