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According to this page: https://portal.rentaflop.com/blog/hosting

It sounds like this is a cryptocurrency miner plus rendering farm, and participants will be paid in cryptocurrencies?

Many of our early hardware providers (hosts) are crypto miners, as they often have many graphics cards. As a result, we pay our hosts in crypto in order to attract them to our network. Our software, rentaflop miner, doesn't behave like a normal miner, however. Its goal is to take existing cryptocurrency miners who mine currencies like Ethereum and give their hardware more useful work such as rendering.

Useful work, fantastic !

Are you experiencing significant performance penalties due to miner use of 1 lane PCIe risers?

I did some testing for a version of such a service in 2017 and it was determined the typical GPU miner configuration using x1 PCIe risers reduced I/O throughout and therefore performance of GPU hardware to the point of being practically useless for anything other than mining.

I have no experience with the characteristics of rendering, I/O, etc but it seems this also applies.

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