CPU设计是否遇到了（软性）速度极限？
我并不在硬件行业，但对未来的发展充满好奇。
我们在3-5 GHz的频率范围内停滞了很长时间。我认为我们通过增加缓存、核心和专用指令来实现性能提升。然而，由于像阿姆达尔定律这样的观察，PC爱好者在新机器上的回报并不理想。我们已经拥有8个以上的逻辑核心很长时间了。
CPU中晶体管的物理尺寸缩小变得非常困难且成本高昂。我们正接近一个更多量子效应开始显现的规模，实际上，晶体管存在一个“最小规模”。那么，我们接下来该如何发展？这些变化（或缺乏变化）将对软件开发产生什么影响？
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I'm not in the hardware industry, and am curious what the future might hold.<p>We've been stuck in the 3-5 Ghz range for a long time. I think we're scaling by adding cache, cores, and specialized instructions. Due to observations like Amdahl's Law, PC hobbyists aren't seeing great returns on new machines. We've had 8+ logical cores for a long time now.<p>The physical size of gates in the CPU is getting very difficult and costly for companies to shrink further. We are approaching a scale where more quantum effects are at play, and there is actually a "minimum scale" for transistors. So where can we go from here? What will the effects of these changes (or lack thereof) be on software development?