|"Did they get hot?"|
Hotter than what? But to answer your question, NO, they did not get "hot". The temps when overclocked may have been a few degrees higher than the non-overclocked temps, but nothing to worry about. My results are similar to Fingers in the above response.
Cooling isn't rocket science. You have a small enclosed box with several components inside that throw off heat. The box (computer case) is only about 1.5 cu.ft. in size. As long as the main heat producers (CPU, motherboard chipset, & GPU) have an adequate heatsink/fan installed (& installed properly), they will run at a reasonable temp, but only if the heat from inside the case is removed & replaced with fresh air. Cooling fans are rated by CFM (cu.ft per minute). Here's a popular 120MM fan that's rated at 70 CFM:
Do the math. 70 CFM / 60 sec per minute = 1.17 cu.ft. per second
That means that every 1.3 seconds (roughly 45 times per minute) all the air inside the case is completely removed & refreshed. And that is just with ONE fan. If the case has a top mounted power supply, it's cooling fan acts as a case exhaust fan too, so the refresh time is even shorter. There's really no need for more case cooling fans than that. More fans doesn't necessarily mean better cooling, but it does mean higher cost & more fan noise. And a high priced aftermarket CPU cooler isn't absolutely necessary either. The stock units are quite good these days. I did buy a Corsair cooler for my last build, but that was only because it was on sale ($10 after rebate) plus the CPU I bought was OEM (no HSF included). It's on sale today for $15: