Was looking for materials for the answer to the question
it turns out that it is seemingly possible to obtain a full stack of technologies for the chips from the 75-80's for a moderate amount of money. So Mr.X from the q decides that his shady moon deals may hit a golden opportunity and using that knowledge how to restore production, he may produce many many equipments for the production of many many processors like Motorola 68000 (specs: 8MHz, 1.5 Watt, 16/32bit, 16MB address space)
Sure it also needs RAM, SSD's, surface mounted components, and other dongles so as additional R&D to fit the purpose - resulting in a unit with 20W power consumption total.
Just vaguely multiplying numbers, to be able to get to some modern metric, to make a comparison performance of that unit is around 100'000 FLOPS, which is somewhat 1/1000'000 of a modern CPU performance.
- really one can appreciate how much things have changed in 50 years, a minute of appreciation here
So a grand plan is
A many many production nodes on the moon produce and launch many many calculating nodes in space, Lagrange points, or as a ring around the planet.
- Best kerbals work on orbital and launch mechanics, so there is absolutely no problems here, nothing, I repeat, nothing can go wrong - it all stable and sound, orbiting and being where all that should be.
The ring size is 40'000km in diameter, and a big hole in it of a diameter of 20'000km for the light to the planet to go through, placed in a Lagrange point with 10-second delay.
Data goes in and out thanks to his buddy Elon Tusk's satellite network.
System performance is around 1'922'654 PetaFLOPs, strong and steady, (which translates to 19e15 calculating nodes).
Clearly, it is not your general computer, but it relatively good at crunching numbers in parallel fashion, somewhat similar like GPU's do their things, so rendering CGI videos may be possible if one writes proper software and SDK's
It is not enough to overtake, you know which, cryptocurrency system, which does 40 times more calculations
- it really should make you appreciate changes with chips production, as few times K1 energy is not enough, by far, to overdo what we do on a fraction of our computation power on modern hardware.
But the system easily trashes top 100 super computers from TOP500 list, combined - 1660 PetaFLOPs.
So on one side, it is not superior computing power, but it is not on the low side as well and can be put to some good use.
The question is:
Assuming the hardware is in place where it should be, the software is running, joules are consumed - what kinds of gains/profits we may expect to have?
Not sure which metric can be used to evaluate the potential of rewards, but is it that golden opportunity Mr.X expects it to be, or is it a bust?
Will Mr.X be able to pay to his buddy Mr. Elon Tusk, launching rockets to the Moon or it won't suffice even feed that Mr.X alone?
What kind of monetary value such system may have?
or if we spin it differently, as it seems to be correlated numbers:
How much money Mr.X earns, or what is his potential net worth?
- it is not important which metric do you use for evaluation, as long as it is mentioned. An answer is a number in a currency of your choice.
Mr.X does not plan to sell it as a whole but may consider some IPO, and sure collect money for entities who are interested to crunch some numbers, work with big data, train neural networks, etc. So what are reasonable expectations in the case?
- The world rules and setting etc - @JBH
Your planet, present-day, present economy, present prices, present rules, etc.
Forbes is proud of their Death Star price calculation article, (do not click, find the origin story, but it is a top link in google), but WB is heistant on the question which is not far from Space Based Solar Power, SBSP, on which NASA regularly updates us with studies, since 1978. Nor is it much different from usual, simple or complex, analysis for an application of or investment in, to have an answer - do we invest or not - which are done on regular basis in real world. Which is suitable, I guess, to be answered using science, geography and culture.
Assigning a potencial value is important part in many cases, in cases like this as an example, of worldbuilding process of hard scify. And as already present answers confirm, the problem isn't as simple as just multiply two numbers.
OP is not a regular supercluster user, he does not know how things are rolling in this inustry, hence he seeks the help of WB community to assess described space construction on its certain parameters, instead of going elswhere (which OP will try as weĺl, failing on WB with this Q was sort of out of expectations). Assess in a setting which we are aware of - real world - and translating and incorporating things into a story is OP's work. For those who like handwave - worry not - behind the scene OP will handwave to his heart content, but he would like to have some healty roots for his handwavium.