The ASUS ROG Strix X299-XE Gaming Motherboard Review: Strix Refined
 

Today we have a chance to dig down on the ASUS ROG Strix X299-XE Gaming. The XE Gaming differs from the non-XE by adding a larger VRM heatsink and includes a 40mm fan and mounting hardware to further assist VRM cooling. A number of companies are releasing 'XE' models with larger heatsinks, although the fan will be an interesting addition.

https://www.anandtech.com/show/12069...erboard-review