我找了几个，都没有太试用，不知效果如何。

近期可能要测试一下。。

Process Lasso好像还可以，国内也“汉化”了很多版本。。

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Process Tamer

Process Tamer is a tiny (140k) and   super efficient utility for Microsoft   Windows XP/2K/NT/Vista/Win7 that runs   in your system tray and constantly   monitors the cpu usage of other   processes. When it sees a process that   is overloading your cpu, it reduces   the priority of that process   temporarily, until its cpu usage   returns to a reasonable level.

Process Lasso

Process Lasso is a unique new   technology that will improve your PC's   responsiveness and stability during   periods of high CPU load. Windows, by   design, allows programs to monopolize   your CPU without restraint -- leading   to freezes, hangs, and micro-lags.   Process Lasso's ProBalance (Process   Balance) technology intelligently   adjusts the priorities of running   programs so that badly behaved   processes won't negatively impact the   responsiveness of your PC.

BES - Battle Encoder Shirase

BES is a small tool which limits the   CPU usage for a specified process: for   instance, you can limit the CPU usage   of a process which would use CPU 100%,   down to 50% (or any percentage you   like). With this, you can use other   programs comfortably while doing   something CPU-intensive in the   background. By limiting the CPU load,   you can also cool down your CPU   immediately when it happens to get too   hot. Of course the processing speed   will slow down proportionally if you   limit the CPU usage, but it should be   much better than crashing because of   heat or (in the worst scenario) having   your computer broken with a burned   CPU.