Last time, Psystar offered us with computers running on Mac OS X called Open Computers, EFi-X does almost the same with a different approach. EFi-X offers a hardware add-on to allow PC’s to boot Mac OS X.

EFI-X™ is not for everyone. It is not for who wants to save money, at all. It is for enthusiasts that put expandability and extreme performances before anything else in their computing needs. We heard those voices, and we answered. says EFi-X

EFi-X runs only when specific hardware configurations are supported, but if your PC fits those specifications, the EFi-X add-on promises headache free installation and upgrades. Installation requires you to plug the device straight into the motherboard, and booting does slow down the Leopard boot process up to a coule of minutes but once up and running the experience is described as seamless. The product sells for $155 and is now available for shipping.

Gizmodo already made a review about this product and this is what they have to say about EFi-X:

used it to turn my gaming PC into a Mac Pro over the weekend, and I’m somewhat amazed to say this, but it works perfectly. I grabbed all the updates straight from Apple—including 10.5.5 last night, so you don’t have to wait for a hacked patch like you would running a typical Hackintosh—installed a whole bunch of software and have been using it for several days. It runs beautifully, just like a real Mac Pro.