Item enchanting effect it's make a minecraft fps dropped.
Please see before & after version of picture.
Environment
OS : Windows XP 5.1 Service Pack 3
CPU : Intel(R) Pentium(R) 4 CPU 2.80GHz
RAM : 1 GB DDR RAM
Java : Java Development Kit 1.7.0 Update 60 (Used for making my mods)
OpenGL Version : Intel 1.3.0 Build 4.14.10.4342
Given that you have a 2.8GHz Pentium 4, which is pretty decrepitly old these days, I'm almost afraid to ask - but what graphics card do you have?