(Image credit: Qualcomm) Qualcomm is back for round two of its push into Windows PCs. At its Snapdragon Summit in Maui, Hawaii, the company revealed its Snapdragon X2 Elite and X2 Elite Extreme. These chips will serve as the high-end offerings in Qualcomm's second generation of Arm-based chips for laptops and other PC form factors.The Elite Extreme is a new tier above the standard Elite, which was the top chip in the original X-series line. The Snapdragon X2 Elite Extreme will offer up to 18 cor...