|70C under load is on the warm side, but perfectly safe. |
If it's a GPU you're talking about, well, that's even better. Some GPUs rocket up to 100C under load.
HTPC | Pentium M @ 2.82GHz, 2MB L2) | 4GB | 1.0TB | Radeon HD5750
Blu-Ray | Win 7 Pro | HDMI out to Onkyo TX-SR707 AV receiver