The MKS SERVO42C closed-loop stepper system can be found at a reasonable price, but how does it stack up against open-loop steppers we know and love, and how does it perform compared against a servo system? In this video, we put all three motion systems to the test. We look at the power and thermal performance, and run stress tests to find the maximum accelerations and speeds in a linear motion setup. Affiliate Link: MKS SERVO42C: https://s.click.aliexpress.com/e/_Dm77Amv C3548 790KV Brushless Motor: https://s.click.aliexpress.com/e/_DlT02kj Stepper stresser script repository: https://github.com/engineerbo/stepper-stresser Chapters: 00:00 Introduction 00:22 Setup 01:00 Contenders 02:15 Thermal Test 03:04 Test Setup 04:20 Test Procedure 05:17 Open-Loop Stepper 07:37 Servo 10:39 Closed-Loop Stepper 13:35 Drag Race 13:56 Conclusion