Hardware Comparison
STM32H7 vs i.MX RT1062 for Voice Recognition
Winner: i.MX RT1062 (score 95 vs 90)
Published 2026-04-02
Specs Comparison
| Spec | STM32H7 | i.MX RT1062 |
|---|---|---|
| Manufacturer | STMicroelectronics | NXP |
| Architecture | ARM Cortex-M7 @ 480 MHz | ARM Cortex-M7 @ 600 MHz |
| SRAM | 1024 KB | 1024 KB |
| Flash | 2 MB | 8 MB |
| ML Acceleration | DSP, FPU | DSP, FPU |
| Connectivity | Ethernet, USB OTG HS/FS | Ethernet, USB OTG HS/FS |
| Chip Price | $8-20 | $6-12 |
| Voice Recognition Score |
Detailed Comparison
Both the STM32H7 and i.MX RT1062 are strong choices for voice recognition. The difference in compatibility scores (90 vs 95) is marginal, so the decision comes down to ecosystem preference, connectivity requirements, and budget. Memory: The STM32H7 provides 1024 KB SRAM, while the i.MX RT1062 offers 1024 KB. For voice recognition's 128 KB minimum requirement, both provide equivalent capacity. Performance: The STM32H7 runs at 480 MHz (cortex-m7, DSP) vs the i.MX RT1062 at 600 MHz (cortex-m7, DSP). Inference performance is comparable at these clock speeds. Connectivity: STM32H7 offers Ethernet, USB OTG HS/FS. i.MX RT1062 provides Ethernet, USB OTG HS/FS. Cost: STM32H7 chips run $8-20 (dev boards $30-80), while i.MX RT1062 chips cost $6-12 (dev boards $25-40). The i.MX RT1062 wins on cost per unit. Choose the STM32H7 when: the STMicroelectronics ecosystem fits your toolchain, or hardware variety is important (22 PlatformIO boards). Choose the i.MX RT1062 when: fastest possible inference is required, the NXP toolchain is preferred, or you need crossover mcu (600 mhz cortex-m7).
Explore Each Platform
FAQ
- Is STM32H7 or i.MX RT1062 better for voice recognition?
- i.MX RT1062 scores higher (95 vs 90) for voice recognition. The i.MX RT1062's 1024 KB SRAM at 600 MHz narrowly beats the alternative. However, ecosystem fit and connectivity needs should also influence your decision.
- What's the price difference between STM32H7 and i.MX RT1062?
- STM32H7 chips cost $8-20, dev boards $30-80. i.MX RT1062 runs $6-12 per chip, $25-40 for dev boards. Pricing is comparable at volume.
- Can both STM32H7 and i.MX RT1062 use TensorFlow Lite?
- Yes, the STM32H7 (cortex-m7) supports TFLite Micro. The i.MX RT1062 (cortex-m7) also supports TFLite Micro.
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