Op has a 1.8ghz processor, I cited a thread much earlier of someone with a 2.0ghz processer unable to run 1942 and Frogger at full speed. I experienced the issue myself. You failed to acknowledge the facts that I based my suggestion on a real issue people have had been dealing with.
You could have acknowledged my facts or debated them but instead you chose to ignore and attack. I think you are fitting the definition of troll much better than I.
You could have used less offensive terms.
There's a decent chance it will run 1942, that one got slower for a while, then significantly faster. It runs about the same speed as Frogger on here.
both ran just fine on a lowly Athlon XP 2400+ last time I tried them (about a year ago) and that's not even 64-bit. AMDs are rather bad for MAME tho, yes. There haven't really been any significant slowdowns in MAME in that time. There haven't actually been any significant slowdowns in MAME for a long, long time except in cases where drivers have had major work done. If anything this 'MAME keeps getting slower' thing is right up there with 'MAME only bothers to emulate Mahjong games' in terms of things that are overstated and haven't really been true for quite a while (and even the latter was exaggerated, even if there was a period when a lot got added) There was even a spell when MAME got a bit faster for many drivers as some coding patterns were exchanged for better ones (removal of a lot of runtime string lookups that had crept in etc.)
As I said earlier, the main problem he's likely to encounter is if the video hardware isn't up to scratch, because that would rule the newer versions out straight away, otherwise it really is always worth trying those out first, rather than assuming some prejudice against them. Even on older hardware, as long as there are no major blocks, the newer versions do a better job than ever with the majority of the classics, if they don't work, sure, try something else, if they do, you've not had to make any compromises at all.
The Atom chips etc. will struggle badly tho, regardless of clock. You're pushed even running classic MAME on that type of thing. It's not all about the clock speed but other parts of the design, and generation.