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Intel’s P-Core’s lineage can be traced all the way back to the P6 architecture that was originally found in the Pentium Pro. From the Pentium Pro to Pentium III to Sandy Bridge to Golden Cove, Intel’s P Cores have had many changes over the years and Lion Cove is no different and in one respect is a major departure from all prior P6 derived cores. Splitting the Scheduler Getting straight into the b
Hackaday recently published an article titled “Why x86 Needs to Die” – the latest addition in a long-running RISC vs CISC debate. Rather than x86 needing to die, I believe the RISC vs CISC debate needs to die. It should’ve died a long time ago. And by long, I mean really long. About a decade ago, a college professor asked if I knew about the RISC vs CISC debate. I did not. When I asked further, he
AMD’s Zen 4, Part 2: Memory Subsystem and Conclusion Please go through part 1 of our Zen 4 coverage, if you haven’t done so already. This article picks up where the previous one left off. To summarize, Zen 4 has made several moves in the frontend and execution engine meant to increase utilization of existing execution resources, which remain largely unchanged since Zen 3 and even Zen 2. Now, we’re
AMD’s Zen 4 architecture has been hotly anticipated by many in the tech sphere; as a result many rumors were floating around about its performance gains prior to its release. In February 2021 we published an article that claimed a 29% IPC increase for Zen 4. You can consider this our formal retraction of that article. Anything said in that article is invalid; however, I (Cheese) don’t regret publi
Intel debuted Skylake in 2015. Then Skylake variants filled out major parts of Intel’s lineup for the next six years. Skylake faced no serious competition at launch, but wound up holding the line against three generations of AMD’s Zen CPUs while Intel struggled to roll out a new architecture across its lineup. Technically, Rocket Lake replaced Skylake-derived Comet Lake CPUs in 2021, but Comet Lak
In late May of 2022, AWS released Graviton 3 to the general public. Graviton 3 was the first ARM CPU to introduce the SVE instruction set to a widely accessible server CPU. Before Graviton 3’s general availability, Neoverse N1 dominated the ARM server landscape. AWS’s previous flagship offering, Graviton 2, implements 64 Neoverse N1 cores at 2.5 GHz. Microsoft’s Azure and Oracle’s OCI both use Amp
For the past decade, ARM CPU makers have made repeated attempts to break into the high performance CPU market so it’s no surprise that we’ve seen plenty of articles, videos and discussions about ARM’s effort, and many of these pieces focus on differences between the two instruction set architectures (ISAs). Here in this article we’ll bring together research, comments from people who are very famil
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