SOLVED: So apparently running a MBP without a battery does throttle performance to around half. From Apple: "If the battery is removed from a MacBook or MacBook Pro, the computer will automatically reduce the processor speed. This prevents the computer from shutting down if it demands more power than the A/C adapter alone can provide." This just seems like poor design to me to make a product that eats more energy than it can pull from the wall. I have been running without a better because I have been through 3 batteries on this Mac, none of which seems to last very long and I am plugged into the wall most of the time anyway. The last battery I had actually swelled up and caused my Trackpad clicker to stop working until I removed it. I just bought yet another crap battery, but after this one dies, I am done with this thing and will move on to something else less poorly designed. ORIGINAL POST: First off, I know my machine is old, but is still able to handle most of what I throw at it despite it's age. However, I did feel that it was getting a bit sluggish, even with a brand new OS install, so I decided to run GeekBench on it and it scored lower than what I thought it should so I brought up results for other computers similar to mine and found that they were getting much higher scores on the same hardware. This is the link to my test result (464/821): http://browser.primatelabs.com/geekbench3/1442393 And a link to someone with the same hardware and OS, but much higher score (1313/2413): http://browser.primatelabs.com/geekbench3/1440389 Any ideas why my machine would be getting such a low score compared to others, and if so, how to fix it?