Efinix Has Released 64-bit RISC-V Soft SoC Architecture
The Sapphire RV64 provides a scalable multi-core processing option for Efinix FPGA product lines.
Updated on Oct. 4, 2026 in Semiconductors
Live Poll
Is now a good time to upgrade your development projects to 64-bit RISC-V architectures?
Efinix has released the Sapphire RV64, a 64-bit RISC-V soft SoC architecture designed to exceed the performance limits of its existing 32-bit offerings. This architecture is now available for implementation across Efinix Titanium, Topaz, and Trion FPGAs.
Why it matters
The introduction of the RV64 architecture allows developers to shift complex signal and image processing tasks from general-purpose CPUs to dedicated accelerator logic within the FPGA. It fills a gap for high-performance workloads that require the expanded addressing and computation capabilities of a 64-bit instruction set.
The Sapphire RV64 supports configurations of one to four processors using an RV64IM instruction set and a seven-stage pipeline. It accommodates external memory including DDR3, HyperRAM, and LPDDR4x, with the Ti375 C529 kit demonstrating LPDDR4x speeds up to 3,200Mbps.
The players
Efinix
A developer of programmable FPGA silicon, focusing on power-efficient architectures for edge computing and embedded systems.
The details
This soft SoC—a processor design implemented entirely within programmable FPGA fabric rather than fixed silicon—is configured through the Efinity IP Manager. Developers can offload intensive image and signal processing tasks to custom logic blocks while utilizing the Eclipse-based Efinity RISC-V Embedded Software IDE for deployment. Implementation requires the Efinity 2026.1 software flow or newer to map the design onto the target FPGA architecture.
Timeline
October 2026: Efinix officially announced the Sapphire RV64 architecture.
The Tech Race
This release follows the industry-wide move toward modular, open-standard RISC-V architectures to replace proprietary vendor-locked CPU cores. Efinix is positioning its high-performance 64-bit tier to compete for compute-intensive edge workloads that were previously limited by its legacy 32-bit stacks.
Developers currently using Efinix FPGA hardware can transition to the new architecture by upgrading to the Efinity 2026.1 software release. The hardware is compatible with existing Efinix FPGA product lines, though users will need to reconfigure their IP Manager settings to leverage the new multi-core and 64-bit capabilities.
The takeaway
The move to 64-bit capability enables Efinix users to handle larger memory spaces and more complex computational workloads. Watch for the performance benchmarks of the four-core configuration compared to the single-core baseline in future developer project releases.
Further reading
For broader technical context on programmable processor design, explore the Semiconductors section.
Source note: This article includes information reported by LinuxGizmos.
Live Poll
Is now a good time to upgrade your development projects to 64-bit RISC-V architectures?
