I'm in the position of selling it again. The buyer wants to know if it is a significant upgrade to his current g5 imac? His: Hardware Overview: Model Name: iMac G5 Model Identifier: PowerMac12,1 Processor Name: PowerPC G5 (3.1) Processor Speed: 2.1 GHz Number Of CPUs: 1 L2 Cache (per CPU): 512 KB Memory: 512 MB Bus Speed: 700 MHz Boot ROM Version: 5.2.6f1 Mine: "21.5-inch LED-backlit glossy widescreen display 4GB memory "mine is 8" 500GB hard drive 8x SuperDrive (DVDÃÆ'Ã¢â¬Å¡ÃâÃÂ±R DL/DVDÃÆ'Ã¢â¬Å¡ÃâÃÂ±RW/CD-RW) NVIDIA GeForce 9400M graphics with 256MB memory Built-in iSight camera Features: / 3.06GHz Intel Dual Core Processor / 500GB Hard Drive, DVD SuperDrive, 8GB! 1066MHz DDR3 SDRAM, plus room for much more! / 21.5" LED-backlit display with a widescreen 16:9 aspect ratio, 1920x1080 HD resolution, NVIDIA GeForce 9400M / Mac OS X v10.6 Snow Leopard, includes new wireless Magic Mouse I want to be honest and feel right about the deal and I know squat about g5's btw I am asking $650, is that fair, too high? about right?