SiFive Unleashes New 7-Series RISC-V Cores With Better Performance
Written by Michael Larabel in RISC-V on 3 November 2018 at 06:34 AM EDT. 30 Comments
SiFive this week announced their 7-Series RISC-V cores with the 32-bit E7, 64-bit S7, and 64-bit U7 series. These new RISC-V parts aren't yet capable of running up against the fastest ARM Cortex CPU cores available today, but they are much more powerful than the previous-gen SiFive cores.

The new SiFive U74 cores are reported to be comparable to the ARM Cortex-A55, though we have yet to see benchmarks proving that performance. Some of the highlights of the new RISC-V cores include:

- SiFive Core IP 7 Series is now available as the "highest performing commercially available RISC-V cores."

- The SiFive Core IP U7 Series is a Linux-capable applications processor while the E76/E76-MC and S76/S76-MC also support bare metal environments and real-time operating systems.

- The 7-Series offers 8+1 cores per cluster, 64-bit memory addressability, built on an optimized 8-stage in-order pipeline (to help with side channel attacks), and other architectural improvements.

More details at on the Core IP 7 Series. There's no word yet if they intend to release a new developer board soon to feature the new U74-MC or if they now intend to slash the price on the existing HiFive Unleashed based on their now older U540 SoC technology and currently priced at $999 USD.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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