Antec P20C @ TechPowerUp
 

The Antec P20C uses the same bones as the DP503, clocking in at a similar price but aiming to offer a cleaner look without the use of RGB and a focus on quieter fans. While it may not offer the same bang for your buck as the ARGB capable DP503, it gives you a good option if understated is what you are looking for.

https://www.techpowerup.com/review/antec-p20c/