A boring weekend a while back (before my PSU died), I did an overclocking session purely on extreme air. Here are some pics
Basic airflow:
VERY noisy exhaust fan:
A battalion of fans strapped in:
Current room temperature was around 32C, I achieved 3.5GHz (over the stock 2.8GHz) with a temperature of 27-28C on all 3 cores... not bad.
BUT I WANTED MOAR soooo....
... added this little fella:
... and I stole this fan my mum was using to dry her laundry to achieve moar airflow around the room:
... plus a chilly drink:
With that I was able to achieve 4GHz purely on air:
[link]woo.