2 · The 3-tier architecture refers to the logical 3-tier system rather than the physical ones. 9. Very Scary Halloween Special. They have a relatively simple AI system. NVIDIA GeForce RTX 3060 Ti — Best overall: 60MH/s, 200W TDP, 8GB GDDR6 VRAM, 9 MSRP. The four modes are Normal Mode, Locked Mode, Receiving Mode, and Resupply Mode.