Samsung could achieve what was once unthinkable, and become the biggest chipmaker in the world by revenue, at least for as long as the current boom in memory prices lasts. According to IC Insights, Samsung’s chip sales are poised to overtake Intel’s in the second quarter of this year, toppling the US firm from the top spot for the first time since it overtook NEC in 1990. The Korean giant is being helped by the rise of mobile devices at the expense of the PCs which Intel dominates. Smartphones drive sales of DRAM and NAND flash memory chips, in which Samsung is the world leader. But Samsung has also been more successful than Intel in other semiconductors for mobile products,…