Yeah, I'd say 185 should be doable. Since they do put off a decent bit of heat, make sure you have adaquate case ventilation. We put a average old CPU fan on my brother's, (after drilling the heatsink so the screws would fit), and it ran quite well at 185. No overheating at all at that speed. (Woulda gone for MUCH higher but I stuck it in a computer to sell.)