一个类的问题

#include<iostream>
using namespace std;
enum CPU_Rank{P1=1,P2,P3,P4,P5,P6,P7};
class CPU
{
public:
    CUP(CPU_Rank r,int f,float v)
    {
        rank=r;
        frequency=f;
        voltage=v;
        cout<<"等级为:"<<rank<<"频率为:"<<frequency<<"电压为:"<<voltage<<"的CPU构造成功!!!!"<<endl;
    }
    ~CPU(){cout<<"CPU析构成功!!!!!"<<endl;}
    void run(){cout<<"CPU正在运行"<<endl;}
    void stop(){cout<<"CPU运行停止"<<endl;}
private:
    CPU_Rank rank;
    int frequency;
    float voltage;
};
int main()
{
    CPU a(P2,250,2.1);
    a.run();
    a.stop();
    return 0;
}
运行出现下面错误：
G:\编程文件夹\c++\实训\4\lab4_1.cpp(24) : error C2661: 'CPU::CPU' : no overloaded function takes 3 parameters
是怎么回事？？？改了几下还是不行，帮下忙