Great_White

Oh god yes, Papanator, you found the issue! After turning this it off I now have 60-70fps running everything fancy (default fancy)! Thank you!

Nope, it's your standard X58 motherboard desktop

So I tried to join my friends Tekkit server, it all went fine and dandy until I actually got ingame and experienced the wonders of 20fps with everything on lowest, now, you might think my computer is shit, it's not, specs are; i7 920, 3.8Ghz 6Gb DDR3, 1333Mhz (2Gb assigned to tekkit via the launcher) ATi 5850 Intel 320 SSD Java 7u3 Latest version of Catalyst (12.4) I've think at this point I've basically tried everything under the sun, and I still get 20fps, at best, at the lowest possible settings, so I have nowhere else to go ask for help, so I've come here, what exactly is the reason for my terrible FPS?