http://www.newegg.com/Product/Produc...82E16896741408
That one in particular looks like a win-cicle. 10k btu and under $200.
I use mine for air cooling and sub zero support ftw... blowing cold air across the ram and nb helps max bclk on locked chips a ton, even when the pot or ss are mounted... worth the $$$ and modding effort.
