By your argument, shouldn't you toss out 3/4 of your RAM? You should indeed test your code on a client-like machine, but for many if not most apps, building is

By your argument, shouldn't you toss out 3/4 of your RAM? You should indeed test your code on a client-like machine, but for many if not most apps, building is much more demanding than running them. Developer time is expensive, so building on the fastest available machine is a good idea.