By Zaheer Kachwala Dec 22 (Reuters) - Videogame console sales were already under pressure owing to tariff turmoil and weak consumer spending. Now a surge in the prices of memory chips is threatening to make the devices costlier in what could be ​another blow to the industry. Demand for dynamic random access memory - chips used in Sony's PlayStation, Microsoft's Xbox and the Nintendo ‌Switch 2 - has exceeded supply as the tech sector races to build out artificial intelligence infrastructure. That has pu ...