RISC-V CPU Performance Has Improved 8x Over Five Years: SiFive HiFive Unmatched vs. SpacemiT K3 Benchmarks
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Written by Michael Larabel in Processors on 9 June 2026 at 10:12 AM EDT. Page 1 of 6. 28 Comments.
Summary
This article benchmarks the SpacemiT K3, a first-to-market RISC-V RVA23 SoC mini computer, comparing its performance against modern Intel Core Ultra and AMD Ryzen desktop CPUs, as well as the Raspberry Pi 5, Loongson 3B6000, and SiFive HiFive Premier. It specifically highlights the long-term performance gains in RISC-V hardware by comparing the new SpacemiT K3 against the SiFive HiFive Unmatched board from five years ago, noting an 8x performance improvement in RISC-V CPU performance over that period.
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Key quotes
· 3 pulledRecently I published some initial SpacemiT K3 benchmarks for that first-to-market RISC-V RVA23 SoC with the K3 Pico-ITX mini computer.
For those curious about the longer-term RISC-V performance, here is a look at how far the RISC-V hardware performance has come compared to the SiFive HiFive Unmatched RISC-V board from five years ago.
After carrying out the benchmarks looking at the 7x ARM server performance in 8 years
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