![]() The kits had 512MB of RAM, a 160GB hard drive (Seagate ST3160023AS) and an ATi graphics card. Other variants do not work with the Microsoft OS. Microsoft has used two versions of the Power Mac G5: the original 2003 one in its “dual 2 GHz” version, or the June 2004 variant, still with two G5 at 2 GHz (but in 970fx version, in 90 nm). From time to time, those machines reappear on eBay or at private homes – I have one – but obviously without the Microsoft OS (and with Mac OS X). Then, Microsoft downgraded the machines, which were eventually sold to employees for $ 300, with obviously a completely erased hard drive. The development kits are used during a few years, at least until the E3 2005: the demonstrations of the Xbox 360 at the time are on Mac. ![]() As we will see, they differ essentially by the graphics card used. Before the arrival of the real console, the brand provides two variants to the developers: the Alpha 1 and the Alpha 2 kits. Then, Microsoft buys many Power Mac G5 and installs a dedicated operating system on it for the devs.
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