Core77

This looks like something you bolt into a Pontiac GTO to get an extra 20 horses out of it, but in fact it's part of a quietly-growing area of computer add-ons mostly unknown to those who aren't tech geeks: CPU coolers. These aftermarket devices (like the Cooler Master Hyper Z600R pictured above, via TweakTown) are the bespoke muscle car parts of the digital age, designed to efficiently and quietly cool your overclocked PC's and be unveiled to your envious friends.

Hit the jump to see larger shots of some of the more remarkable-looking designs.

Zalman CNPS 9500, via Hardware Mods

Thermalright ULTRA-120-E Extreme Edition CPU Cooler, via Acoustic PC

Cooler Master CM Sphere, via Teck Review DB and hexus

Thermaltake DuOrb, via Legion Hardware

Zalman CNPS9500 AM2 AMD, via Cool Tech PC

Thermaltake V1, via BoingBoing Gadgets

Thermaltake MaxOrb, via TechWare Labs