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cover of episode 260: CPUs Have Been Juicing for Too Long

260: CPUs Have Been Juicing for Too Long

2024/11/10
logo of podcast Brad & Will Made a Tech Pod.

Brad & Will Made a Tech Pod.

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Host: 本期节目讨论了AMD和英特尔最新发布的CPU产品线,包括AMD Ryzen 9000系列和英特尔酷睿超频版S系列2。两者都采用了异构设计,将CPU的不同部分分配到不同的芯片上,以提高性能和能效。AMD Ryzen 9 7900X3D凭借其3D缓存技术在游戏性能方面表现出色,而英特尔酷睿超频版S系列2则在多线程工作负载方面表现突出。此外,节目还讨论了Windows更新对CPU性能的影响,以及新的CU DIMM内存标准。 Guest: AMD Ryzen 9000系列CPU初期存在测试方法问题,导致基准测试结果低于预期。Windows 23H2和24H2更新改变了分支预测机制,这会对AMD Ryzen 5000系列CPU的性能产生显著影响。AMD将单芯片CPU的TDP限制在65瓦,提高了能效。Ryzen 5是自Ryzen以来第一个从头开始设计的全新架构。双CCD设计中,跨芯片通信速度慢于芯片内通信速度,这会影响多线程应用程序的性能。Windows操作系统对异构CPU架构的支持还不完善。AMD AM5插槽将至少支持到2027年。新的芯片组支持更快的内存,最高可达6400MT/s。Ryzen 9 7900X3D在游戏性能方面表现出色,但3D缓存技术对游戏性能的提升取决于游戏类型和游戏引擎。英特尔酷睿超频版S系列2跳过了100系列命名,原因尚不明确。Arrow Lake是英特尔首款全部由台积电代工的顶级桌面CPU,采用了3D封装技术。英特尔和AMD在CPU芯片设计上存在差异,英特尔目前所有CPU核心仍在单个芯片上,而AMD则将CPU核心分布在多个芯片上。Arrow Lake的E核心比之前的E核心性能显著提升,但其功能和缓存配置与P核心不同。Arrow Lake不再使用超线程技术,集成的Xe显卡性能有所提升,但仍无法与独立显卡竞争。集成的NPU性能有限,不足以支持Copilot等功能。英特尔采用了新的LGA 1851插槽。英特尔Arrow Lake系列CPU在多线程工作负载中的表现出色,但在游戏性能方面表现平平。英特尔Arrow Lake系列CPU的空闲功耗比AMD Ryzen 9000系列CPU低得多。Arrow Lake的内存控制器位于独立的芯片上,这可能是导致其游戏性能较低的原因之一。英特尔承认Arrow Lake系列CPU的性能低于预期,并表示正在与厂商合作解决BIOS和操作系统方面的问题。新的芯片组支持CU DIMM内存标准。DDR5内存的稳定性在7200MT/s时表现不佳,CU DIMM标准的出现是为了解决这个问题。

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The episode discusses the latest advancements in CPU design, focusing on AMD's Zen 5 and Intel's Arrow Lake architectures. It explains the concept of disaggregated CPUs and how they differ from traditional monolithic designs.
  • Disaggregated CPUs use multiple smaller chips connected together, allowing for different manufacturing processes and increased core counts.
  • Intel's Arrow Lake uses TSMC's N3 process for its chiplets, marking a significant shift from Intel's traditional in-house fabrication.
  • AMD's Zen 5 continues the trend of disaggregated designs, improving upon previous generations with better performance and efficiency.

Shownotes Transcript

It's been a wild few months in CPUs, with next-generation releases from both AMD and Intel in their respective Zen 5 and Arrow Lake categories. Now that most all the big parts are out, we break down what's what, including why everyone is finally going disaggregated (and what that means), what's going on with OS updates to make your processor run faster, which one to get if you just want to play games, what the new CU-DIMM standard means for RAM, and more.

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