maplins say that their stock AKASA P4 COOLER is not suitable for a core 2 duo 6300 (Conroe). I am using one to replace a failed ASUS P5A2-8SB4W (Fan bearings failed) and it seems to cope .
Do you mean AK-675 cooler? This model is only for socket 478. You need a cooler which supports LGA775.