In this video I rebuild my Chia farming server less than a year after the last build, because the workload has changed and the upcoming plot filter halving is going to effectively double the GPU work. My original 1U setup with a single RTX A4000 has been rock solid, but it runs hot—around 75°C under normal load and creeping into the low 90s when it gets hammered right after startup. The A4000 is a one-slot card (which I like), but that form factor and tight airflow in 1U, plus being jammed next to the SAS controller, makes the temps a real concern. To fix all of that, I move the farmer into a Supermicro CSE-836 3U chassis so I can run dual RTX A4000 GPUs and get better airflow. I walk through the hardware choices (X10SRL-F for dual x16 slots, E5-2623v4, X550-T2 10GbE, and an LSI 9217 4i4e so I can feed the backplane and still connect downstream JBODs), plus how I power the GPUs using an 8-pin CPU lead that breaks out to dual 6+2. On the software side I’m on Oracle Linux 9.3, switch off the UEK to the RHEL-compatible kernel, install NVIDIA/CUDA, and then validate performance: the dual A4000 setup basically doubles my tested farm capacity—about 5.64 PiB at 1/512 and 2.82 PiB at 1/256—exactly what I needed before the filter change hits.