Hi ...I did have the Asus P8P67 Deluxe mainboard/motherboard,but I returned it to the place of purchase for that cougar point chipset problem ...Now since I have not got a motherboard for around 3 to 5 months at least with the cougar chipset (P67) ...I have decided to go with the P55 chipset mainboard for something to do,while these cougar chipset problems are resolved ...The P55 chipset I bought was an Asus P7H55-M/USB3 & I am thinking of which of the core i7 870 or core i7 870k to install...I have got the core i7 870 already,but I was thinking of installing it into another motherboard that I have already for online use...Which of these two processors do you think is the better for overclocking and/or just sufficient for the period of 5 to 6 months until the cougar point chipsets return to working order...Stay with & just use the core i7 870 because it is not worth going up to the core i7 870k or buy the core i7 870k overclocking processor to check it out ...Price difference is about $50.00 cents or more for the K series ...I have to decide soon as they told me that there is not many left of these K series models ...