If it's possible, could you please share your device list, also including your GPU name.
I built quite a lot mining rigs, but I dont think I could build a rig at that cheap, just 240$, it's really cheap. For my typical setting, I could briefly list the prices as following:
- CPU - Intel Celeron G3930 (91$)
- Mainboard ASUS ROG STRIX Z270E (135$)
- RAM 4 Gb (46$)
- SSD 64 Gb (38$)
And the most expensive one should be PSU, I dont know what's your PSU, but for my 8 P106-100 rig, I'm using Super Flower 1000W PSU (170$). So the total price is already much more than your cost.
Most of these scenarios turn out to use old refurb PCs from office type environments, where you may get a tower case and a motherboard with a few spare PCIe slots. To run 8 GPUs I suspect the OP will also use the 3 to 1 PCIe adapter board and an additional PSU (as he admits to later).
While not necessarily a bad way to go, you got to consider that the gear is often 3-4 years old and was designed for office use, not necessarily 24/7 mining, so you may end up troubleshooting more that just using new equipment. There is also a high chance of getting some duds that slipped through the refurb process, so you may have shipping to deal with unless you can source locally. I would say if you are just deploying a few rigs, buying new components might be the best way to go, but for those who plan to scale big it may be worth the hassle of dealing with the headaches.
