So I'm looking for. Decent upgrade from my P5Q and my E6850 OCed to 3.2 So I was looking at the EVGA P55 or the P8 equvalant but how much better is the i5 680? i think that's it I'm doing this on my phone so yea and suggestions looking to keep it around 300 if possible 400 max I'm also using a enermax 620W and a 6850 toxic and would I be able to use my patriot DDR2 ram?
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No. The p55 is ddr3 only. DDR3 is still cheap; check craigslist or anandtech's for sale forum for deals. I found 4 gb of 1600 corsair for $28. Your ddr2 is worth about the same.
well the ram isnt really a big deal as i planned on upgrading that but what i really want to know is how much better is the Core i5-2500K vs the i5 2400