Some computer questions

"Let's accept that the Intel is twice as fast as the AMD" - well, not quite; about half as fast again.

http://www.cpubenchmark.net/high_end_cpus.html

..which shows the 1100 somewhere in lower i7 territory.

I got one because the performance(then) was nearly as good, and it was ​much ​cheaper. It still works as fast as I can make adjustments; it's only big stacks or panos that I find it not fast enough. Sometimes.