The long-awaited NVIDIA GeForce 8800 GT upgrade for Mac Pros has been released. The graphics card features 512MB of dedicated GDDR3 memory, uses the PCI Express interface, and includes two dual-link DVI ports, and is capable of driving up to two 30-inch Apple Cinema HD Displays. It requires a Mac Pro (bus speed 1.33GHz) with PCI-Express. The card is priced at $280 and can be purchased as a standalone, user-installable item or as a build-to-order option for Early 2008 Mac Pros through the online Apple Store. Controversy ensued when Apple introduced this upgrade card as an option available exclusively to newly purchased Mac Pros in January. At the time, users presented research that shows the cards should be backwards compatible. Apple is now making the kit available, in supported fashion, to all Mac Pros with a bus speed for at least 1.33GHz.