Yes, I think for browser-heavy computing (the author mentioned opening hundreds of tabs) a ton of ram and a fast ssd cache are doing a a lot more than a fast cpu (and indeed, the author reports the cpu is usually operating at 1 or 2 %). CPUs today are so fast and cache-sensitive that hard drives basically amount to off-site backup. Unless you have a lot of ram, they'll just starve and idle in I/O for most end-user types of compute loads.