I built an Ethereum mining rig in 2020 for under $1,000 — here’s an update on how it’s going.In October 2020, I posted an article about an Ethereum mining rig that I built for under $1,000.Here’s an update on how it’s going.I started mining Ethereum in September 2020.Bitcoin, Ethereum, and the rest of the crypto market started pumping soon after my mining rig was up and running.Read the original post for the full breakdown of why I started mining Ethereum using a GPU mining rig.The short answer:I had more time for my crypto hobbyI wanted to do more than just buy cryptoI was curious to learn more about GPU miningYes, my initial costs were under $1,000.I originally spent $978 on my GPU mining experiment. That initial price tag included just two graphics cards. So, my two-GPU mining rig was up and running for less than $1,000.You can find a full parts list in the original post.Electric Costs Remain MinimalGetting the parts needed for the rig made up my fixed costs to start mining. Then, there’s ongoing costs like electric.My electric costs are minimal, roughly $10 per month so far. That takes into account adding two additional GPUs to the mining rig.Electric costs vary depending on your location and services available so keep that in mind if you’re building a mining rig.Currently, the GPU mining rig is making between $3.50–4.50 USD per day. This fluctuates wildly depending on the current price of Ethereum. More recently, the rig has returned closer to the high end of that range.The overall cryptocurrency market has been pumping lately due to increased mainstream institutional and retail adoption.Recent jumps in price mean that the Ethereum I mine is worth more. So of course, any decreases in price would in turn decrease profits.To keep my costs down, I…