After some backtracking, I realized a minor decrease in performance I had been running the benchmarks without the battery installed after I'd swapped out the stock RAM for third-party memory. The MacBook Pro was running off AC power for both tests, but the battery was installed only while I was running the benchmark with 4GB of stock RAM.
After some digging, I found that the performance drop is documented on Apple's support Web site--though honestly, Apple's reason for forcing a drop in processor speed doesn't make a whole lot of sense. Apple justifies the speed reduction by explaining that it "prevents the computer from shutting down if it demands more power than the A/C adapter alone can provide.We benchmarked our 2.53-Ghz MacBook Pro with 4GB of RAM using Cinebench R10's multiprocessor test, and achieved a score of 5,549 with the battery present and 3,504 with the battery removed.
After some digging, I found that the performance drop is documented on Apple's support Web site--though honestly, Apple's reason for forcing a drop in processor speed doesn't make a whole lot of sense. Apple justifies the speed reduction by explaining that it "prevents the computer from shutting down if it demands more power than the A/C adapter alone can provide.We benchmarked our 2.53-Ghz MacBook Pro with 4GB of RAM using Cinebench R10's multiprocessor test, and achieved a score of 5,549 with the battery present and 3,504 with the battery removed.
Lesson learned: The battery stays in. If you're a MacBook or MacBook Pro owner, you'll get the best performance out of your system when you leave the battery in. A small extension of your battery's life span is not worth a 37 percent drop in performance.(www.gearlog.com)
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