EKWB takes their high static pressure optimized Vardar fans and improves upon them by adding a zero RPM mode to PWM-controlled fans. The dual ball bearings also get replaced to reduce bearing noise, and at $20, these aim to be the best-performing radiator fans for PC DIY watercooling around.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips