The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.
I upgraded the RAM in my T430 (dGPU disabled, i7-3840QM, 1vyrain) from 2*4GB (Samsung and Hynix) to 2*8GB (Puskill DDR3L 1600). It won’t POST in that...