Introduction:

Mushkin''s lineup of PCIe 4.0 SSDs has largely remained a Phison affair. The Delta series was based on the Phison E16 and the Gamma on the Phison E18. Recently, the company launched a new series of PCIe 4.0 SSDs - the Redline VORTEX. The key here seems to be the usage of a new SSD controller - the Innogrit Rainier IG5236. It appears to be taking over the flagship mantle from the Gamma - besting it in both read and write random access IOPS and also sequential read speeds. 

Learn more about Rainier IG5236:

Mushkin Redline VORTEX PCIe 4.0 NVMe SSD Launched: Affordable Flagship (anandtech.com)