What is getting hot, the CPU or GPU ?
What constitutes "mad hot" ? and what are you using to measure it ?
1. Download and install HWiNFO64 (assuming 64 bit OS, otherwise use 32 bit version) .
2. Run HWiNFO and hit "Sensors Only" button.
3. Start Crysis and play for 30 minutes.
4. Report back with CPU maximum (next to last column) temps for:
CPU Cores
GPU Temp
GPU VRM Temp
The max allowable temperature for the GTX 770 GPU is 98C
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-770/specifications