I recently started playing minecraft on my MacBook, but I ran into a few issues. New installation worked fine; I was getting something ~30fps. Added a texture pack- all fine and dandy. But as soon as I tried to add in a mod, down to 2fps (I tried a minimap originally, then Sildur's shaderpack, specifically the one that said it worked for low FPS Macs). I originally had 1GB of memory available and I upped it to 2GB at the suggestion of a classmate; it says it's only using 10-15% of it but it's still running badly until I turn off the mods. Now I'm just confused and at a bit of a loss. Am I just SOL in terms of mods on this computer?
Computer specs:
Mac OSX 10.9.2
Processor: 2.8GHz Intel Core i7
Memory: 8GB 1333 MHz DDR3
Graphics: Intel HD Graphics 3000 512MB
If I need anything else let me know.