Sonnet Technologies' first upgrade for dual-processor G4s will be available in the UK from next week, the company has revealed.

The upgrade, for Power Mac G4 AGP Graphics Machines, is called the Encore/ST G4 Duet and was announced at Macworld Expo in San Francisco on January 9.

UK pricing is yet to be revealed, but the card is shipping for $999 in the US. It will be distributed in the UK by Computers Unlimited .

This card houses dual 500MHz processors, and is compatible with Apple's dual-processor design.