本文目录一览:
- 1、主频和睿频有什么区别?
- 2、cpu睿频是什么意思?
- 3、睿频是什么意思
主频和睿频有什么区别?
一、表示不同:
主频2.6GHz-3.2GHz,表示处理器的主频为2.6GHz,更高可达3.2GHz,想要达到3.2GHz,可能需要人为设置,可能是睿频至3.2GHz。
睿频3.2GHz,表示处理器可以睿频至3.2GHz,不需要人为设置。
二、含义不同:
主频就是人为提高CPU的外频或倍频,使之运行频率(主频=外频*倍频)得到大幅提升,即CPU超频。
睿频是指当启动一个运行程序后,处理器会自动加速到合适的频率,而原来的运行速度会提升 10%~20% 以保证程序流畅运行的一种技术。
CPU的主频不代表CPU的速度
但提高主频对于提高CPU运算速度却是至关重要的。举个例子来说,假设某个CPU在一个时钟周期内执行一条运算指令,那么当CPU运行在100MHz主频时,将比它运行在50MHz主频时速度快一倍。
因为100MHz的时钟周期比50MHz的时钟周期占用时间减少了一半,也就是工作在100MHz主频的CPU执行一条运算指令所需时间仅为10ns比工作在50MHz主频时的20ns缩短了一半,自然运算速度也就快了一倍。
以上内容参考:百度百科-主频
cpu睿频是什么意思?
睿频是指当启动一个运行程序后,处理器会自动加速到合适的频率,而原来的运行速度会提升 10%~20% 以保证程序流畅运行的一种技术。
处理器应对复杂应用时,可自动提高运行主频以提速,轻松进行对性能要求更高的多任务处理;当进行工作任务切换时,如果只有内存和硬盘在进行主要的工作,处理器会立刻处于节电状态。
这样既保证了能源的有效利用,又使程序速度大幅提升。通过智能化地加快处理器速度,从而根据应用需求更大限度地提升性能。
扩展资料
CPU性能衡量指标
对于CPU而言,影响其性能的指标主要有主频、 CPU的位数以及CPU的缓存指令集。所谓CPU的主频,指的就是时钟频率,它直接的决定了CPU的性能,因此要想CPU的性能得到很好地提高,提高CPU的主频是一个很好地途径。
而CPU的位数指的就是处理器能够一次性计算的浮点数的位数,通常情况下,CPU的位数越高,CPU 进行运算时候的速度就会变得越快。现在CPU的位数一般为32位或者64位。
以前人们使用的计算机都是32位系统, 近年来人们使用的计算机的处理器中64位所占用的比例则显得更多,这是因为64位的计算机的运行速度变得更快,提高了人们的工作效率。
而CPU的缓存指令集是存储在CPU内部的,主要指的是能够对CPU的运算进行指导以及优化的硬程序。一般来讲,CPU 的缓存可以分为一级缓存、二级缓存和三级缓存,而那些处理能力比较强的处理器则一般具有较大的三级缓存。
参考资料来源:百度百科-中央处理器
参考资料来源:百度百科-睿频
睿频是什么意思
睿频是指当启动一个运行程序后,处理器会自动加速到合适的频率,而原来的运行速度会提升10%~20%以保证程序流畅运行的一种技术。
着重提升单核心执行效率,提升频率是最直观的方式。处理器应对复杂使用时,具备加速频率技术的处理器会自动提升主频,从而应对负载使用的计算需要。
而当工作需要切换到主要是数据交换之类非处理器高性能计算要求的任务时,比如说读写操作之类的,加速频率就会降低,处理器会处于节能低功耗状态。
详细解释
这样一来,处理器既保证了运算要求的高性能,又可以很好的平衡功耗带来的热量散发。一般来说,睿频一类的加速频率技术,更大允许处理器在基础频率基础上提升20%左右的频率,这样处理器可以“超额”应对计算需要。
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