Your system will probably be on the low end of "supported" systems once Turbine finishes coming up with new "minimum/recommended" specs.
Originally Posted by Ef-John
I believe the 8.1 is the "Early 2008" model, which clocks at 2.4 Ghz (Although Everymac's specs don't exactly match yours.)
1- 2 GB is definitely NOT enough memory. You really need 4 GB. LOTRO hasn't run in 2 GB since about 2008 (when Moria was released) -- despite what Turbine claimed!
6 GB would not hurt, but I don't know how much an improvement it would provide.
Memory speed itself also makes a big difference. I recently had Apple add 4 GB to my system, but instead of the 13333 Mhz memory, which my system had, they added 1000 Mhz memory which caused a noticeable slowdown in everything on the iMac.
2- I don't know how the ATI 2600 compares to the 5750, however, I suspect that it is definitely "less powerful." 256 MB of graphics memory is also "light."
3- Similarly, the core 2 duo itself is probably under powered.
This is my system:
27 inch iMac Intel (mid 2010)
Processor: 2.93 GHz Intel Core i7
Memory: 8 GB 1333 MHz DDR3
Graphics : ATI Radeon HD 5750 1024 MB
Display: 27-inch (2560 x 1440)
Software: Mac OS X Mountain Lion OS X 10.8.4
Other than that... there are STILL significant issues with the Mac Client, which now seem to have also infected the PC client -- MTBF has been consistently about 45 minutes max.
I run both and since 11.3, while Mounted Combat lag issues have been "fixed" -- many other issues seem to have replaced that one. So, I don't know how much (if anything) using bootcamp will actually accomplish, at least in the short run.
Raiding has always required "turning down" graphics and turning off things like Floaty names -- on PC or Mac.
All of that said... the thing which I am coming to believe will be most important to performance on a Mac is a decent disk drive. While both your and my systems came with 7200RPM disc drives, which were fairly high end at the time, they are still inherently slow. (I come from the SCSI world where back in 2003, 1500RPM drives were "normal".) So a SSD would be a big win because of the "landblock" system which LOTRO uses... constant swapping in and out of graphics blocks.
In the end. I don't know that anything short of a new Mac will make a significant difference in performance for you.
Bill Magill - Mac Player - Old Timers Guild- Gladden:
Valamar: Dwarf Hunter - Level 105
Valdicta: Dwarf Rune-keeper - Level 105
Valanne: Beorning - Level 91