关掉cpu+c状态
作者：啊鲁
前言：
在上一篇文章中啊鲁测试了i9 13900K关闭/开启效能E核心后的性能对比，得出的结论是关闭小核心然并卵，除了极少部分游戏有一丢丢的提升，其他都是核心全开优势更高。
从12代酷睿处理器开始，Intel采用性能核与大小核的设计，再配上超线程技术，使得CPU多线程性能得到了长足提的进步。
早在很久以前，江湖上有一种传闻是CPU关闭超线程会让CPU单核性能有所提升，以损失不一定用得上的多核性能来换取更高单核性能，这种方法可取么？在13代酷睿处理器中性能核和效能核都有了，超线程还是性能核心才支持，后台多任务交给效能核心群应该是足够了，由此看来，性能核的超线程完全有理由关闭，从而获得更高的单核性能，今天啊鲁就来试试13代酷睿关闭超线程前后的性能体验会不会拉开明显差距。
测试平台：
测试平台用的CPU是i9 13900K，8个性能核心与16个效能核心，配合HT加持共有32线程。
主板用的是微星MPG Z790 EDGE WIFI D4刀锋。
黑色PCB和银白色的装甲，看起来蛮搭配。
MSI标志性的龙魂LOGO，即使是还未通电，颜值依旧在线。
供电模块均配有全金属散热片。
你还别说，这个角度看还能发现不一样的美。
16+1+1相供电配置，16相为核心供电，每相最大稳定输出电流为90A，即使是遇到i9 13900K旗舰也丝毫不慌。
第一路M.2散热片采用快拆设计，免工具，这个设计确实方便，虽然用户不是经常进行更换M.2固态硬盘的操作。
该主板最高支持5333MHz DDR4内存，这频率的DDR4应该还是能正面刚一下DDR5内存的，哈哈。
前置Type-C接口，支持PD快冲，前提是你的机箱前置接口也要支持才行。
五路M.2接口均支持PCIe4.0协议，其中四路M.2接口加入了金属加固处理。也都配备了免工具M.2固态硬盘快拆卡扣。主板带有2*PCIe X16与1*PCIe X1插槽，第一条由CPU直出，原生更支持PCIe 5.0速率。其余两条分别支持PCIe 3.0X1，PCIe 4.0X4，由主板南桥负责提供。
ALC4080音频处理芯片，附近布有高质量音频液态电容，独立的音频区域设计，带来更纯净的电流设计。
后置I/O接口颇为丰富，DP1.4+HDMI2.1视频输出接口、数据接口方面：3*USB 5Gbps、4*USB 10Gbps、2*TYPE-C，速率分别为10Gbps和20Gbps。2.5G速率的 RJ45网卡接口、WiFi6E无线网卡。下方的两个小圆按钮分别用于清空BIOS设定和一键刷新BIOS。
显卡用的是目前最新旗舰微星RTX 4090超龙，刀锋7代风扇，镀镍铜底座机上气流导向技术与导流鳍片，让显卡满载运行温度表现也相当出色。
为了喂饱i9 13900K+RTX4090这两大顶级旗舰硬件，电源方面我使用了振华Leadex VP1000W PRO，全模组设计，在13cm小身尺寸，它有着80Plus铂金认证+输出波纹控制优秀+输出电压稳定+保持时间非常充足，风扇支持ECO低负载低温停转诸多亮点。不得不说实在是小身材大能量。
测试成绩：
PS：上图成绩为默认状态，下图成绩为关闭超线程状态
CPU-Z单线程成绩，关闭超线程后基本没有影响。但多核性能下降了0.5%。
Vary渲染测试，关闭超线程后，渲染成绩下降23%。
凡事总有例外，H.264转码测试，关闭超线程后成绩提升4%。
cinbenchmark R23渲染测试，默认状态下的i9 13900K领先关闭超线程的幅度高达24%。
光线追踪3DM PR测试，两者分数几乎一样，
地平线5，关闭超线程后，i9 13900K比默认状态平均帧率高3帧。
古墓丽影暗影：关闭超线程后，i9 13900K比默认状态平均帧率高4帧。
尘埃5，两者的平均帧率一模一样。
总结：
可见在13代酷睿处理器关闭超线程后，在生产力上性能损失最高达24%。虽然也有提升的地方但也聊胜于无。再看游戏，关闭超线程后确实有游戏会有帧率提升，但提升幅度不多，总的来说没有必要关闭超线程来瞎折腾。毕竟关闭超线程收益远不如失去的性能多。感谢阅读全文，欢迎打赏点赞。
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