If you've built a beast of a rig and want to melt it—or just benchmark—these titles will push modern GPUs, CPUs, and memory subsystems to their limits.
GPU is king for raw frame rates at 4K/Ultra. CPU matters for simulation games and 1% lows. 16 GB RAM is the bare minimum; 32 GB recommended for modern AAA + background apps. Fast NVMe SSD (Gen4/Gen5) eliminates texture pop-in and stutter. Always check specific system requirements before purchasing.