So I put together another system yesterday which has an i5-2500k in it and I would really really like to oc it but I didn't have enough money to buy another cooler. Do you think it would be possible to squeeze 200-400mhz with the stock cooler (3.3-3.7ghz on all cores)? The case its in is a cm storm scout......
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Try increasing the frequency as far as you can without increasing CPU voltage. Monitor the core temps closely.
You may have enough room for a small core voltage increase.