I consider myself a geek (and most of my friends would agree) but it's been 15 years since I last compiled the Linux kernel :) That said, I wouldn't rule it ou

I consider myself a geek (and most of my friends would agree) but it's been 15 years since I last compiled the Linux kernel :) That said, I wouldn't rule it out as a test because of that, but I do think that if you are going to compare 4 different RAM sizes of CS instances, and compare the costs of doing a job using those different sizes then you need to pick a job that is going to make use of the RAM. You can see from the results that there is a small (time) benefit moving from 256 to 512MB (but not enough to offset the increased costs) and virtually none above that.