I am running my E2200 right now a 3.0Ghz on about 1.4v or so. Would it be worth upgrading to an E6300 for 84$ or the E7500 for 120$? The E6300 has twice the cache, while the 7500 has 3x the cache. At this point i don't think I would want to spend more than that on a dual core processor. Or am I better off saving up that money to upgrade my video card next? I do mostly gaming, with some Autocad/matlab stuff thrown in.