Alright so as most of us know Valve is now making a steam OS and a lot of companies are building steam machines to go along with it. Some even say they will be priced similarly to the ps4/xboxone . Now i want to make an oil cooled steam machine with a heavily overclocked CPU (i5-4670k). Originally I had planned to run 16gb@2400mhz DDR3 but I was wondering about using GDDR5 instead. So my question is; Can GDDR5 be used with an i5-4670k? If so Which MOBOs support GDDR5? and finally which companies make good GDDR5 memory?