Smaller RAM DGX Spark alternative?

Excerpt

Howdy, I was wondering if anyone knew of any turnkey low-power draw solutions to host inference with 10-20GB of VRAM? I have an 4x3090 AI GPU cluster that I'm running big models on, but I am hosting my memory system LLMs (embeddings, rankings, etc) on my gaming 4090 right now. I'm out of PCIE lanes on my AI machine and really don't want to build a whole other system (cpu, ram, mobo, gpu, etc) just to run about 15-20GB of small models. I want to keep things local so a VPS is off the table, and I