TN LCD panel monitors. Yes, they're fast for gaming. This is why I personally won't use them though.

Read about this and join our forum: http://linustechtips.com/main/news-reviews-article-guides/linus-videos-news-and-ramblings/79004-tn-lcd-monitors

https://twitter.com/linustech
http://www.facebook.com/LinusTech

Buy non-TN LCDs at NCIX: http://ncix.com/products/index.php?minorcatid=1003