By the way, my dear US friends, the price of electricity in my country is double the price of electricity in your country, so please show me some compassion. During one year, three computers at full speed will drain my family's wallet around 2/3 (400€) of the national monthly minimum wage (600€)*. Of course, I'm at the default 60% not only because of the money issue, but also the noise issue. Any opportunities for me to relocate are welcome! :-) Idea: let's invest in buying computers that run WCGrid for people who would benefit the most out of them on developing countries where energy is cheapest!

UPDATE: *Fortunately, we're not in any financial distress and the average income from our household is quite greater than this value

One more thing. All of the results obtained on WCG are required to be published in the public domain. Therefore it will be available to anyone who may be planning to do additional research. Therefore reducing the need for duplicate effort and expense. Researce time on super computers is a scarce and expensive commodity available to few researchers. Therefore our donation of resources and time provides a much needed resource for research. IBM gets many more requests for use of these resources than can accommodated and therefore they very carefully screen these requests to make the resources available where they can be of the most benefit. The cost/benefit analysis can only be done years in the future.

As for me, I enjoy providing my time and resources to these projects. It gives me a warm/fuzzy feeling that my minute effort may someday lead to a big benefit to society.

Whew!

First off, thank you for your efforts. You should only crunch as much as you are comfortable with and can reasonably afford without neglecting all of your other obligations. Nobody expects you to deprive yourself and your family of your normal lifestyle. Whatever you contribute is appreciated.
As far as relocating, if it is only the cost of electricity you are considering, some of the cheapest rates are in China, India, Iceland and some of the Persian Gulf states. I think, for most people, the cost of electricity is not one of the factors which is considered when relocating is discussed. However much you crunch, it should never be a burden to you and your family.
Cheers

@aaabaaab Thanks for the tip! What tool did you use to make those estimations? Let's say for the i7 (our best machines at home are laptops and our smartphones are pretty much no good for crunching WCGrid tasks).

@Sgt.Joe I totally get you. I was not talking about the costs of running WCGrid to brag for contributing more than anyone else. I was talking about it, because I wanted to make the point that the costs for lots of people running WCGrid are not negligible and I asked for compassion, because of negative comments such as suggestions I could be "purposefully ignoring" obvious things, that I am a "silly goose" or that I am a "troll and twister". Please show me some compassion and respect, my dear co-members. From the above comment, I understand that if I was a troll, then I guess my modest contributions (both in terms of computing power and comments in the forums) should not count and should not be valued (I know they do count and are indeed valued - at least by some of you). My relocating and investment ideas in the previous comment were half-serious, half-joking, but the point I'm trying to make - that the costs are indeed great - is 100% serious. I know this (deciding how much you contribute to WCGrid) is a personal decision, but just like there is a calculator for how much you should give to the poorest in the world (besides other donations you might give), someone should build a calculator for how much computing power you should give away to WCGrid based on the hardware you got and financial resources. I let this challenge to a WCGrid mathematician member. I'm serious. I won't show you my poker face only for privacy reasons. Then my face would be associated with all your bad comments and that's not funny. ;-)

You're welcome!

I used a power meter to measure electricity consumption for each device with something like this: https://www.amazon.com/Digital-Electricity-An...-Equipment/dp/B07M8JKLG5/

Then got the results for SCC wu on each device and compute average time needed per wu.