PowerLogix today announced the release of its new 1.4GHz PowerForce55 processor upgrade. The upgrade utilizes G4 Apollo processors (7455) with 256K of 1:1 L2 and an additional 2MB of high-speed L3 cache, and is compatible with Mac OS 9.2.1, 9.2.2 and Mac OS X 10.1 and later (including Tiger). In addition, the new card offers a two-year warranty and 30-day 100 percent money back guarantee.