480Mhz ARM Cortex-M7
BIGTREETECH SKR 3 EZ uses a 32-bit ARM Cortex-M7 series STM32H743VI chip with a core frequency of 480MHz, providing enough performance to handle even the most demanding user interfaces while enabling stutter-free printing.
Higher Motor Driver Voltage – Faster print speeds
The motor driver voltage of up to 48V can be set using jumpers. However, 48V is only supported when using TMC5160 Pro drivers.
SKR 3 EZ compared to SKR 3
| Function | SKR 3 EZ | SKR 3 |
| Core frequency | 480MHz | 480MHz |
| Output current | 5A | 5A |
| Fan interfaces | 3 CNC fans, 3 normal fans | 3 CNC fans., 2 normal fans |
| Motor voltage | DC12V-DC48V | DC12V-DC24V |
| Supported Drivers | EZ5160/2209/2208/2225/2226/2130/6609
TMC5160/2209/2225/2226/2208/2130 |
TMC5160/2209/2225/2226/2208/2130/ST820
LV8729, DRV8825, A4988, etc. |
| EZ driver support | Yes | No |
| Optional CNC fan voltage | Yes | Yes |
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