Is 32GB RAM enough for a RAM disk for temp files?

Yes, but only if you have that RAM to spare. A RAM disk borrows from system memory — if your OS and apps already use 20GB, you have 12GB left, which is plenty for most temp files. The key is ensuring your peak memory usage (including the RAM disk) stays under ~28GB; otherwise, you’re better off with a fast NVMe SSD. Don’t buy more RAM just for a RAM disk unless you’re doing something like video transcoding where latency matters.