

EVGA GeForce4 Ti 4600 ACS 2 128-A4-NV83-A1
EVGA ACS2- The first GPU to use heatpipes.
EVGA ushered in the ACS^(2), which was being strapped to the GeForce4 Ti 4600. ACS^(2) iterated on the original by adding memory coverage, as well as another industry first: heatpipes. While the blower fan on the MX 440 may not have been entirely necessary (passive versions of the card were made available at the time), a more than doubling of performance on a chip like the Ti 4600 could warrant the extra cooling help.
EVGA also ran a contest to trade in a GeForce4 ACS for "EVGA Bucks" in 2017: https://web.archive.org/web/20201120011033/https://www.evga.com/articles/01177/evga-christmas-miracle/