Macworld When Apple’s M1 chip made its debut in November 2020, it not only shook up the Mac, it shook up the whole computer industry, outperforming chips from giants such as Intel (which Apple ditched) and AMD. Those companies have been doing their best to catch up and lo and behold, AMD now claims its latest laptop chip, the 7840U, is faster than Apple’s M2. According to AMD, its new Ryzen 7 7840U shows improvement over the M2 that ranges from 5 percent in web browsing to 75 in the Passmark 10 benchmark tool. (We wonder why it doesn’t supply specific numbers or use a more common tool such as Geekbench or Cinebench.) Macworld’s sister site, PCWorld, states that the…

Apple and Microsoft have never occupied this much of the S&P 500 Index, leaving some investors worried about the gauge’s increasingly top-heavy nature. Subrat Patnaik for Bloomberg News: The world’s two most-valuable companies saw their combined weightings in the benchmark jump to a record 14% this week after strong earnings reports from Microsoft and others fueled a rally in technology stocks. “It’s concerning to have such concentration in a few names and all those companies are in the very similar tech and communication services sectors,” said Michael Landsberg, chief investment officer at Landsberg Bennett Private Wealth Management. “This concentration will drive broader market performance until it doesn’t.” According to Tejas Dessai, an analyst at Global X ETFs, the growing influence…