From about 1991, the 68040 in the Quadra 700 Mac is quite the high performance CPU:
What a beast. The '040 was a substantial upgrade over the '030 that had previously been used by Apple. It featured 1.2 million transistors, over four times as many as its predecessor. This processor increased the L1 cache size by a factor of eight to 4096 bytes, and it was the first 68k processor to have an on-board floating-point unit (FPU). While not without its drawbacks, the '040 processor was an obvious candidate for Apple’s next line of premium workstations at time. And this line would become known as “Quadra,” starting with the Quadra 700 and 900 models in late 1991.
Photo from the linked article:
Word processing, email and web browsing all possible, with some difficulty:
Any site using https is strictly off limits for these browsers, shrinking the usable Web significantly. The websites that do load, however, can be surprisingly responsive. Proxy services such as theoldnet.com are a simple way to load websites as they were from various years past (using the resources of archive.org, and removing SSL to just make it work). Loading the Ars Technica homepage from 2001 was a slog, taking several minutes to load in all the text and images and eating up a good chunk of memory