Chia Coin is a different beast as this up-and-coming crypto currency doesn’t require a GPU at all, instead relying heavily on storage. As we explain in further detail in our article on  how to farm Chia Coin instead of “mining,” you build ~100GB “plots” on a PC, using the power of CPU, RAM and high-speed SSDs. Then you copy the plots to hard drive(s) that have the plots on them connected to the Internet 24/7 and wait for them to be chosen as the solution to a Chia Coin block. 

• CPU: Get a modern desktop CPU with at least two threads for every Chia plot you want to build at the same time. In our experience, an individual plot can take 6 or 7 hours and doing multiple plots simultaneously will take longer, but if you’re taking this process seriously, you’ll want to work on at least five plots at once. That means you’d need at least a 6-core CPU. Clock speeds help, but don’t bother overclocking as it could introduce instability for too little return.
• SSD: You need at least a 2TB NVMe SSD, preferably with a high TBW (total bytes written) endurance rating so you don’t wear out the drive within a few weeks of building plots 24/7. Look for a TBW of at least 1,200 for 2TB drives and 2,400 for 4TB drives.
• The people behind Chia Coin say that you need at least 375GB of free space to build a plot that takes up about 108GB when it’s finished. However, in our experience, 280GB of free space was enough. That would equate to six plots for a 2TB SSD, acknowledging that you also use 50 to 100GB for the OS and software.
• You want a drive with high sequential write speeds, preferably of 2,000 MBps or more and you should avoid inexpensive, DRAMless drives entirely. Also, be sure to get some kind of cooling, if only just a heat spreader, to keep your drive performing at its best.
• Hard Drive(s): After you’ve created your plots, you will want to move them from a high-speed SSD to lower-cost-per-GB storage device, namely a hard drive. It makes the most sense to buy a series of external, USB hard drives and then move them to a Raspberry Pi for farming. However, you can also use internal SATA hard drives if you wish.
• RAM: You need at least 2.6GB of RAM for each plot you are building (during the farming phase, this doesn’t matter) so, for six plots, that’s nearly 16GB of RAM before you take into account the minimum amount of RAM that Windows (or Linux) needs to operate. So, ideally, you should get 32GB of RAM at minimum.
• Power Supply: If you’re going to run a system intensely for days or even weeks at a time, spend the extra and get a high-quality PSU which is Gold rated.
• Motherboard: Which you choose here really depends on how much internal storage you want. Getting a motherboard with more M.2 ports allows you to run multiple NVMe drives together in a RAID 0 array and more SATA ports means more internal hard drives for long-term data storage of your plots.
• GPU: An integrated GPU will do fine. You don’t even need to connect a monitor if you plan to access the box remotely.
• Case / Cooling: Just keep the system reasonably cool. Stock CPU fans and case fans are ok, but make sure your main SSD is adequately cooled.