Sounds to me like you are blaming Intel for all the bloat an OEM added to the computer. I hate to tell you this, but OEM's also do that to AMD as well, but that seems to be a bit irrlevant. Also note, you are talking about the old Pentium CPU's. The Core 2 CPU's just blew away AMD and it took them over a year to come back with something close to competitive and they are still, clock-for-clock, slower than Intel.
The downside of AMD is the bug we (and other software companies) hit which preclude running on more than one core at a time. It is a performance limitation. It will exacerbate stuttering. So, from my perspective, I cannot, in good faith, recommend AMD. We have limited reports that AMD may have fixed the problem, but that has only been a few people reporting it.
I am not trying to convince you to go with Intel. I understand preferential buying. I would say go with AMD as well, because no matter how much better Intel is, you will find something wrong with it and that kind of misery is simply not worth giving up buying what you already want to buy. I just think you have not been staying in touch with the advances Intel made in the CPU area from the old Pentium days and are using old out of date information to make a current day purchase decision.