It is with SSD based Swap, I think GTG still has his full on a 64gb/128gb server with the rest on SSD Swap IIRC and is still one of the most reliable RPC nodes (In my experience). In fact the blockchain is only just approaching 300GB in terms of shared_memory on the RPC nodes, hence a 256GB RAM server with ~400GB Swap Should suffice API requirements at relatively high speeds for quite a while, if it is noticeably a problem with respect to API call speeds, we will opt to either upgrade to a 756GB+ server, or run multiple servers for different APIs and use Jussi.