Board Thread:Administrator Noticeboard/@comment-99.147.137.115-20130119211544/@comment-128.208.36.147-20130122173255

Personally, i don't recommend using texture packs with tekkit.

but here's what you should do before messing around with jar files:

1. tiny render.

2.  animations off.

3. fast graphics.

once you do these, use shift+f3 to monitor the internal memory usage, and ctrl+alt+delete or ctrl+shift+esc to monitor your computer's memory and cup usage.