I've been using the LM Studio Program as well as ComfyUI using Local Only Models. Up front I use a 13900K/64GB Sys/2TB Working Drive and 2TB DATA Drive. These 2 Drives are separate from the C: SYS Drive and Isolated in order that they have specific permission to access only DLL and SYS Files needed. The rest (the workhorse) is the GPU, a RTX 4090. Let's talk POWER. For context my avg. Power Bill was around $200 as a Gamer that plays 8 to 12 hours a day every day. I decided to install the new 5090 I have for a "Burn In" Test. With either Folding@Home or LM Studio the amount of power used went over double. But, I used it for a solid month. For what I do, Batch Texture Processing once a Material is created and some Pictures of my Chihuahua in various Meme style Photos, the costs outweighed the usefulness. With RTX Chat I could go through my own files / DATA and with LM Studio and ComfyUI I could do the rest just fine on the 4090. The cost on the 4090 was about a +50% increase compared to Gaming. BUT, this was only a 30 Day run on each card with no manual Optimization.