A pruned node still validates Bitcoin
Pruning removes older block files after the node has downloaded and validated them. It does not replace consensus validation with trust in a third party. The trade-off is that the node cannot serve the entire historical chain to peers or rescan arbitrary old wallet history without downloading again.
Initial sync is the heavy step
CPU, disk speed and network quality affect initial block download. An SSD and stable wired connection usually improve the experience more than chasing a large memory number.
Start with what a Bitcoin node does and monitor current chain state on the network dashboard.