Specifications
Model
SiFive HiFive Premier P550 mini-DTX motherboard
Form Factor
mini-DTX, 203 x 170 mm
Development Kits
HF106-000 (16 GB) and HF106-001 (32 GB)
SoC
ESWIN EIC7700X RISC-V AI SoC
CPU
4x SiFive Performance P550 RV64GC RISC-V cores @ 1.4 GHz, up to 1.8 GHz overclocked
CPU Class
Cortex-A75-class performance
L1 Cache
32 KB instruction plus 32 KB data per core; cache supports ECC with SECDED
NPU
Up to 19.95 TOPS INT8, 9.975 TOPS INT16, 9.975 FTOPS FP16 (not software-supported at launch)
Hardware Accelerators
HAE block for 2D blit, crop, resize and normalisation
GPU
Imagination AXM-8-256 3D GPU — OpenGL ES 3.2, EGL 1.4, OpenCL 1.2 / 2.1 EP2, Vulkan 1.2, Android NN HAL
Vision DSP
DSPs single cluster with 512 INT8 SIMD support
Video Codec
H.265 and H.264 — up to 8K @ 50 fps or 32 channels of 1080p30 decode
Video Encode
H.265 up to 8K @ 25 fps or 13 channels of 1080p30
JPEG
ISO/IEC 10918-1 and ITU-T T.81, up to 32K x 32K
Memory
16 GB (HF106-000) or 32 GB (HF106-001) LPDDR5 @ 6400 MT/s, soldered on the system-on-module
Boot Storage
128 GB eMMC 5.1 flash
Configuration Storage
2 Kbit EEPROM for manufacturing data
Storage Expansion
SATA III connector
Expansion Slot
PCIe Gen3 x16 slot (electrically x4)
Wireless Expansion
M.2 Key-E socket for a Wi-Fi / Bluetooth card
Video Output
HDMI 2.0 port supporting 4K
Audio
Header for front-panel stereo line-out and line-in / microphone; rear panel stereo jack with mic input
Networking
2x Gigabit Ethernet ports
USB
Up to five USB interfaces
Overview
The SiFive HiFive Premier P550 mini-DTX is a 203 x 170 mm motherboard built around the ESWIN EIC7700X RISC-V AI SoC and its four SiFive Performance P550 RV64GC cores running at 1.4 GHz, or up to 1.8 GHz when overclocked. SiFive pitches the P550 core at Cortex-A75-class performance, and each core carries 32 KB of instruction and 32 KB of data L1 with ECC using SECDED protection.
Compute beyond the CPU comes from a 19.95 TOPS INT8 NPU (9.975 INT16, 9.975 FP16), an HAE block for 2D blit, crop, resize and normalisation, an Imagination AXM-8-256 GPU with OpenGL ES 3.2 and Vulkan 1.2 support, and a vision DSP cluster with 512 INT8 SIMD. Note that at launch the vendor flagged the NPU and multimedia blocks as not yet software-supported, so buyers should confirm the current driver state for their workload.
Memory is soldered onto the system-on-module as 16 GB or 32 GB of LPDDR5 at 6400 MT/s, paired with 128 GB of eMMC 5.1 for boot and a 2 Kbit manufacturing EEPROM. Expansion runs to a PCIe Gen3 x16 slot wired at x4, a SATA III connector, an M.2 Key-E socket for Wi-Fi or Bluetooth, two Gigabit Ethernet ports, up to five USB interfaces, and HDMI 2.0 for 4K output. It is the mini-DTX counterpart to SiFive's Mini-ITX P550 board, offering a larger PCB footprint and more slots.
Key Benefits
mini-DTX 203 x 170 mm with a real PCIe x16 slot (x4 electrical) and SATA III gives expansion the Mini-ITX variant cannot offer. Up to 32 GB LPDDR5-6400 soldered on-module plus 128 GB eMMC provides usable memory and boot storage out of the box. 19.95 TOPS INT8 NPU with an AXM-8-256 GPU and vision DSP targets edge AI work on RISC-V, and ECC-protected L1 caches suit reliability-sensitive deployments. Dual GbE, HDMI 2.0 4K and up to five USB ports complete it as a workstation-class RISC-V board.
Applications
RISC-V application development and porting, edge AI inference with the EIC7700X NPU, industrial computing and control, storage and NAS builds with SATA and PCIe, research and university platforms, open-ISA workstation builds.
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