Hello, Ladies and Gents. I am looking to upgrade from an Athlon II x4 645/Biostar 785g motherboard to a Sandy Bridge Quad-Core/Z68 Motherboard. I am a guy that likes to mess with my power settings. I know at exactly what voltages my current Athlon II needs to run at any speed between 3.5 to 2.4 ghz. I just love to screw with the thing. It undervolts to 1.2375v at stock speeds and overclocks as high as 3.317ghz without increasing the stock voltage (1.35v stock). This system has seen more than 2 weeks worth of Prime95 in its life. I mostly game and browse the internet, but do some photoshopping and media converting as well. I know Sandy Bridge processors can turbo up from stock speeds, but what I want to know is can I control the voltages at which they do so? Is there a motherboard that will let me control turbo state voltage if it is not a common feature? I generally undervolt my PCs, I like to have full control of the vcore. I really want to buy a Z68 board for a future upgrade to Ivy Bridge and a Radeon 7000 series card. So should I buy one of the cheaper quad-cores (newegg has the i5-2320 for only $175), or go for a 2500k? Will I miss the minor loss in clock speed when gaming or the unlocked multiplier when doing photoshopping?