Hi folks, I have the following iMac from 2007: "The iMac "Core 2 Duo" 2.0 20-Inch (Aluminum) features a 2.0 GHz Intel "Core 2 Duo" processor (T7300), with two independent processor "cores" on a single silicon chip, a 4 MB shared level 2 cache, an 800 MHz system bus, 1 GB of RAM (667 MHz DDR2 SDRAM, PC2-5300), a 250 GB (7200 RPM) Serial ATA hard drive, a vertically-mounted slot-loading DVD+R DL "SuperDrive", ATI Radeon HD 2400 XT graphics acceleration with 128 MB of GDDR3 memory, a built-in iSight video camera, and built-in stereo speakers underneath the 20" glossy TFT Active Matrix LCD (1680x1050 native) display designed to "bounce sound off the desk below"." I upgraded this to 4gb of RAM and 1TB HDD. And I am currently considering upgrading to the base Mac Mini Model: 2.5GHz Mac mini Specifications 2.5GHz dual-core Intel Core i5 4GB memory 500GB hard drive1 Intel HD Graphics 4000 OS X Mavericks How much faster will this upgrade be? Will the graphic performance be better as I do light gaming on occasion. Please advise. Thanks!