Question about FX-53 Temperatures

Hello all, I recently upgraded to a newer Shuttle case, with the following specs:

Shuttle SN25P
AMD FX-53
Mushkin Level One PC 3500 (2x512MB)
74 GB Raptor
Plextor PX-716
etc.

My question is this, I run prime95 to test for my temps, and after about a half hour of my CPU at 100%, my temps vary steadily between 51 and 53 Centigrade. Is this safe for an FX-53? If so, any suggestions on increasing airflow on a small form factor case?

51-53C is a little high, but it's an FX-53 inside a tiny SFF Shuttle. You are fine.

I would put a few more fans inside that case if you can, I know its a shuttle