Undeterred by Mac clone maker Psystar's recent run-in with Apple's lawyers, Open Tech has announced Open Tech Computer 1.0, a $620 bog standard system based on a 3.4GHz dual-core intel Pentium D 945 - yes, we're surprised there are still some of those around too - 3GB of 667MHz DDR 2 and an Nvidia GeForce 8600 GT graphics chip. It's got 500GB of 7200rpm hard drive storage and a DVD writer. 802.11g Wi-Fi's built in too.
Crucially, it's billed as compatible with Mac OS X 0.5 - aka Leopard. To be fair, it's also said to be compatible with Windows XP, Vista and Linux, but you'd expect those to be supported.