I have read multiple things about what people are saying and not one answers the question of what wattage does the RC415ST-HM (Alhena5) motherboard except in the processor department ? I too have had put in a new card to the motherboard and upgraded the power supply also upgraded the ram as someone had put 2 different types in which did not help. Since I had fixed it all as upgraded Ram and power supply it wont run with a graphics card that need a power hook up? But it will run on a single slot card that does not need extra power ? I'm talking as a 6750 card that needs power even with an 875 watt power supply will not boot. but with a non powered 7750 card it boots right up? The processer is a single core and I want to put in a dual core 3.4 GHz but it takes 95 watts. I'm wondering if that board is a 65 watt or not or if it will take a 95watt processer for an upgrade ? Funny thing I that I put in a 4800 card that needs power and it boot right up no problems with a 600 watt power supply, but its not working well and wont play most newer games as its my granddaughters computer so the only thing that's holding it back which is still cheaper to do is a dual core CPU but don't want to burn out the CPU or the motherboard as new CPU takes 95 watts. Most Parts I had laying around except a new board which is harder to find a good one for the Intel 775 CPU now is that there older and they can only be bought on e-bay as online stores have only the 775 boards that are no longer supported by any manufacture now not even for the drivers ?