I am looking to purchase a water cooling system from Corsair and I am unsure which model will be best for me. My CPU is an Intel i5 3570K overclocked to a modest 4.2GHz, idle is about 25°C and normal load is approximately 45°C to 50°C on air cooling. I want to eliminate the large radial heatsink and fan which is the main source of noise. My question is will the H55 quiet model provide enough cooling? Do I need to upgrade to something like the H80i? I know I could just do overkill and go with the H100i but I'd like to go with smaller and more quiet. All input is welcome.