All this talk of WU value is of... little value. Work units are assigned according to the speed of your computer and what work they have queued for completion. These vary in value according to how long they will take to complete. In theory, one 20-point work unit will take twice as long to complete as a 10-point work unit on a given computer. Now assuming all this is true (I can’t say for sure that I’ve got it right), the only measure of relevance is points per given time period say, per day or week and that would be a product of speed of processor(s) and running time.