根据Radeon Bios Editor 的 FAQ
Q: Why do I get three dashes instead of a number in some of the 'voltage' boxes?
A: Those voltages are 'fused', as ATI calls it. I suppose this means that it's the driver that sets these voltages. However, you can just leave this as it is or you can overwrite the dashes with any numeric value you like.
问:为什么在一些电压框里是三根下划线而不是数字?
答: 按ATI说,这些电压是上了保险的。我猜这是让驱动程序设置这些电压,可以不管或用你喜欢的数字替代它。。(不过建议还是不要改,除非显卡废了随时有钱买过)。