XLR8 has announced its next generation of Mac processor-upgrades, optimized to support multi-processing with G4 processors.

MACh Speed G4 ZIF MPe (multi-processing enabled) will replace the MACh Speed G4z family. The new cards ship with a standard ZIF form factor, and are compatible with XLR8’s Carrier ZIF design.

The move follows Apple CEO Steve Jobs’ Macworld Expo keynote revelation yesterday that the company’s new 450MHz and 500MHz Power Mac G4s will contain dual-PowerPC G4 processors, delivering up to seven billion calculations per second.

Jack Kolk, vice president and general manager of XLR8 said: “The modular approach pioneered by the Carrier ZIF has just been taken to the next level.

“With the Carrier ZIF and third-party processor, or with XLR8’s own premium solution, the MACh Carrier G4 provides the greatest configurability, flexibility, modularity.”

The new upgrade cards are compatible with beige and blue-&-white G3s and G4 desktops machines that utilize ZIF socket upgrades

MACh Speed G4 ZIF MPe is available immediately in three speeds: the 500MHz card costs $849, the 450MHz version is $699, while the 400MHz variety is $599.

UK pricing was unavailable at the time of writing.