# New forcefields implemented in gromacs **URL:** \ **Category:** User discussions\ **Created:** [March 2, 2023, 2:44pm UTC](https://gromacs.bioexcel.eu/t/new-forcefields-implemented-in-gromacs/5905 "2023-03-02T14:44:07Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![WoutVE](https://avatars.discourse-cdn.com/v4/letter/w/cdc98d/32.png) [@WoutVE](https://gromacs.bioexcel.eu/u/WoutVE)\ **Post date:** [March 2, 2023, 2:44pm UTC](https://gromacs.bioexcel.eu/t/new-forcefields-implemented-in-gromacs/5905/1 "2023-03-02T14:44:07Z")
GROMACS version: 2023 GROMACS modification: No Hi, I was wondering if there will be an update with new implemented force fields, such amber19sb, bsc1 and the watermodel opc. Because if I understand it correctly, DNA is parametrized using AMBER94 when using the AMBER99SB force field. As of now I am using the CHARMMGUI website, but it tends to be slow when doing over 40+ different complexes and I can’t really get the hang of AmberTools22 due to the complexity (DNA,protein and zinc ions complex) and limited information on it. Warm regards, Wout, master student at KU Leuven ---
**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\ **Post date:** [March 8, 2023, 5:10pm UTC](https://gromacs.bioexcel.eu/t/new-forcefields-implemented-in-gromacs/5905/2 "2023-03-08T17:10:21Z")
Hi, For amber force field port for GROMACS - you can have a look here [http://ffamber.cnsm.csulb.edu/ffamber.php](http://ffamber.cnsm.csulb.edu/ffamber.php) - you can seach in the third-party category in this forum [Third party tools and files - GROMACS forums](https://gromacs.bioexcel.eu/c/third-party-tools-and-files/8) - you can look at the old user contribution on [User contributions — GROMACS webpage https://www.gromacs.org documentation](https://www.gromacs.org/user_contributions.html) Maybe more are available by other users I hope it helps. \Alessandra