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Author: clamchowder

Loongson’s LSX and LASX Vector Extensions

February 26, 2023 clamchowder 4 Comments

Loongson used to make CPUs based off the MIPS ISA, but the company recently switched to a homegrown ISA called…

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AMD’s RDNA 2: Shooting For the Top

February 19, 2023 clamchowder 7 Comments

In 2019, AMD moved off their long-serving GCN architecture in favor of RDNA. We’ll cover the first generation of RDNA…

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Intel’s Dunnington: Core 2 Goes Dun Dun Dun

February 5, 2023 clamchowder Leave a comment

After Conroe’s launch in 2006, Intel had an excellent core architecture (Merom). They smacked AMD around in the client space…

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Previewing China’s Loongson 3A5000 with Performance Counters

January 29, 2023 clamchowder Leave a comment

Loongson’s 3A5000 represents another domestic CPU effort from China. It implements four LA464 cores, and targets everything from desktops to…

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Bulldozer, AMD’s Crash Modernization: Caching and Conclusion

January 24, 2023 clamchowder 1 Comment

In Part 1, we looked at Bulldozer’s core architecture. But the architecture itself isn’t the full story. Memory advances have…

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Bulldozer, AMD’s Crash Modernization: Frontend and Execution Engine

January 22, 2023 clamchowder, cha0shacker 4 Comments

AMD’s K7 Athlon architecture formed the basis of the company’s CPU offerings for around a decade. Athlon did very well…

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Golden Cove’s Vector Register File: Checking with Official (SPR) Data

January 15, 2023 clamchowder Leave a comment

In late December 2022, we published an article going over how Intel optimized Golden Cove’s vector register file to handle…

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Microbenchmarking AMD’s RDNA 3 Graphics Architecture

January 7, 2023 clamchowder 24 Comments

RDNA 3 represents the third iteration of AMD’s RDNA architecture, which replaces GCN in their consumer graphics lineup. At a…

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AMD’s Zen 4, Part 3: System Level Stuff, and iGPU

January 5, 2023 clamchowder Leave a comment

We covered Zen 4’s core architecture in depth in two articles. This one will focus on anything we didn’t manage…

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Golden Cove’s Lopsided Vector Register File

December 25, 2022 clamchowder 2 Comments

Ever since Intel first brought AVX-512 to their big core lineup, they made all of the vector registers 512-bit. They…

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