In terms of head to head utility, Opera and Firefox are close competitors. Opera may have an advantage in one aspect with its compatibility with and access to Chrome’s huge extension library. But one significant factor to consider is the fact that Opera, because it’s built on Chromium, is a processor-hungry browser with its RAM consumption comparable to Chrome, which is known for its high CPU usage.
就实用性来说，Opera 和 Firefox 不相上下。但 Opera 可能在扩展方面有优势，因为它兼容于 Chrome 庞大的扩展库且可以正常访问。但有一点需要考虑的重要因素是，Opera 是基于 Chromium 而构建的，这就意味着它是一款 CPU 密集型浏览器，其内存消耗量与 Chrome 相当，而 Chrome 以 CPU 使用率高而闻名。