SiFive's Performance P650 licenseable processor IP core will debut to lead partners in Q1'2022 while the general availability is expected in "summer" 2022. Whether the Performance P650 will make its way into any public SiFive developer boards or the like remain unknown, but hopefully they will come out next year with some performant successor to the HiFive Unmatched.
This successor to their Performance P550 is expected to be the fastest RISC-V processor IP core on the market. Over the P550 should be around a 40% performance increase per-clock cycle. Overall there should be around a 50% performance gain over the P550. SiFive is reporting the Performance P650 will be faster than the Arm Cortex-A77.
Building upon the Performance P550 design, the SiFive Performance P650 is scalable to sixteen cores using a coherent multicore complex, and delivers a 40% performance increase per clock cycle based on SiFive engineering estimated performance in SPECInt2006/GHz, thanks to an expansion of the processor's instruction-issue width. The company compares P650 to the Arm family by saying it "maintains a significant performance-per-area advantage compared to the Arm Cortex-A77".
Other architecture enhancements over the previous generation include a higher maximum clock frequency (Liliputing says up to 3.5 GHz), platform-level memory management, interrupt control units, and support for the new RISC-V hypervisor extension for virtualization.
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The partnership will see Intel license SiFive's IP to create its own SiFive P550-based 64-bit SoC that it will fabricate on its new 7 nm node. It will form the basis of a new development platform Intel is calling Horse Creek, and will be made available to customers interested in exploring its potential in various applications involving embedded SoC tech. This could mean smartphones, but also cars, IoT products and the like. If Intel gets enough interest, it could take the relationship further. Intel hasn't yet revealed the technical specifications of the SoC, so we don't know whether it will be a single-core or multi-core platform, although the latter is likely. It's GPU tech is also unknown at this time, but Xe-based graphics are likely.
While the first Horse Creek SoCs will be ready next year, it isn't likely we will see any Intel RISC-V-based chips in commercially available products until 2023 at least.
SiFive recently announced two new high-performance 64-bit RISC-V cores, the Performance P550 and Performance P270:
SiFive compares the Performance P550 core to Arm's Cortex-A75 with higher performance in SPECint2006 and SPECfp2006 integer/floating-point benchmark, all [in] a much smaller area which would enable a quad-core P550 cluster on about the same footprint as a single Cortex-A75 core.
SiFive reckons its fastest RISC-V processor core yet is closing the gap on being a mainstream computing alternative to x86 and Arm.
The yet-unnamed high-performance design is within reach of Intel's Rocket Lake family, introduced in March, and Arm's Cortex-A78 design, announced last year, in terms of single-core performance, James Prior, senior director of product marketing and communications at SiFive, told The Register.
San Francisco-based SiFive didn't provide specific comparative benchmarks, so you'll have to take their word for it, if you so choose.
[...] SiFive's latest design, which is set to be teased today, will be christened with a formal name at the RISC-V Summit in December.
The CPU core is said to be about 50 per cent faster than its predecessor, the P550, which was introduced in June. We note that the L3 cache memory capacity has been quadrupled, from the 4MB in the P550 to 16MB in the new design. Up to 16 of these new cores can be clustered versus the maximum of four for the P550. The latest design can also run up to 3.5GHz compared to 2.4GHz for the P550.
While Intel was interested to acquire RISC-V processor developer SiFive and SiFive is considering its strategic options, the companies could not agree neither on financial terms nor on how SiFive technologies could be used at Intel reports Bloomberg. The latter company is still considering both an initial public offering (IPO) as well as a takeover by a larger player.