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cpu的核心数和主频哪个重要？购买cpu时需注意的事项

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cpu的核心数和主频哪个重要？在购买电脑的时候cpu的核心数和主频率往往是我们购买事最纠结的问题，那么到底是主频率重要还是核心数更重要的呢？下面就随小编一起来详细的解读一下cpu核心数和主频率的相关比较。

往往，人们会认为频率更加关键，但随着诸如DX12等底层API的进阶，越来越多的游戏可以发挥出多线程、多核的优势，不妨来看看德国CB的一个小评测。

该测试一共使用了9颗处理器，有AMD FX，也有2代/4代/6代酷睿i5/i7甚至包括Broadwell-E，参数如下——

所有评测中，显卡都是目前单芯世界第一的TITAN X Pascal，且游戏只考察720P和1080P两种分辨率，也就是保证决不让GPU在游戏中掉链子。

参测的游戏多达14款，分别是《纪元2025》《奇点灰烬 DX12》《战地1，DX11/DX12多人模式》《杀出重围：人类分裂 DX11》《羞辱2》《毁灭战士 Vulkan》《F1 2016》《战争机器4》《赛车计划》《古墓丽影崛起 DX11/DX12》《影子武士2》《巫师3》《战锤：全面战争 DX11》《看门狗2》。

汇总后的成绩如下：

可以看到，游戏帧数与CPU核心数呈现正相关，一个例外是i7-6900K和6950X，前者主频倒是多了200MHz。

不过，在核心数相同时，主频的作用又体现出来了，比如7700K对比4770K。

总结：从以上比较中我们可以得出结论，cpu的多核心性能明显优于核心少但是主频高的处理器，但是核心数相同的情况下主频率高的cpu就更快了。简单的我们可以使用以下公式比较出自己想要的cpu性能。

将2颗cpu的（主频率×核心数）×0.5进行比较即可。哪个得出的数值高就哪个。注：此方法是小编无意间从高手处得知，只能大致得出结论作为应急使用，具体的还得大家自个儿参阅cpu相关参数之后再进行购买。

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