Apple released a new Dual 1.8GHz PowerMac today. The new model introduces a second dual G5 configuration to the PowerMac line. The new PowerMac offers Dual 1.8GHz G5, 900MHz Frontside Bus, 512MB DDR400 SDRAM, Superdrive, and NVidia GeForce FX 5200 Ultra. The new PowerMac G5 product line: Single 1.6GHz PowerMac - $1799 (from $1999) Dual 1.8GHz PowerMac - $2499 (new) Dual 2.0GHz PowerMac - $2999 (Unchanged) The Dual 1.8GHz PowerMac G5 was first rumored in July. The new dual model was rumored to shift some demand from the popular 2.0GHz processors.