Do you already own a motherboard that's compatible with Intel's "7th gen" CPUs? If not, then there's no point in getting a 7400, when an 8400 costs about the same, while not only offering faster per-core performance, but also having 50% more cores. A quad-core processor is likely to see a substantial performance hit when streaming many games, which a six-core processor will be able to handle a lot better.