As long as it doesn't go up to more than 60c* under load then you should be fine. But pentium can run hotter unlike the amd counterpart. I got a Big Typhoon HSF on my 840 and it idles at 45 and load 55 but I'm not worried about it when it goes over 65 during cpu stress test and stuff. My bros pentium D 820, in a gateway pc runs at 55 idle and goes over 65 during gaming but that doesn't slow it down. But it is better to run the cpu as cool as possible especially applying overclocking on the chip. So if you want to better cool it down then get some good HSF like Big Typhoon, Zalman and alike, better yet get a water cooling and there's one you can pawn for around $120 and it is only capable of cooling just the cpu a good down to 35c to 40c idle. It's a lot better than stock and HSF. I myself is saving some mulla to get a Swiftech water cooling kit for my rig. Also get some good thermal paste to go with the new CPU cooler like the OCZ or Artic Silver.