![]() Although legitimate processes can use SIMBL, so can some adware. You have some components running that use SIMBL. So disable iDrive temporarily, restart the computer, and run a while to see if things get better. Online backups can slow things and, if used to back up too much stuff, they can drastically slow things because of so much accessing of your already slow hard drive. Looking at the report, I wonder if iDrive is accounting to part of this. We have the same basic drive in a geriatric 2011 iMac 21.5 and it still scores in the 80-100MBps range for read/write. That fact that you say the computer has noticeably slowed since new suggest both a potential hard drive issue and software problems.įirst, your drive's read/write speed are far below what I consider normal for that drive type: ![]() Rather than give up, I'd rather see if we can make what you have work better for you. 2015 was the one year they soldered the RAM in place, making it truly your "forever RAM." In the 2105 models, no one, human or divine, can increase RAM. This is aggravated by Apple's decision to fit slow hard drives to 21.5-inch iMacs. Those numbers do not compute a favorable cost/benefit profile for me. Look at the the difference in benchmark scores for iMacs that year (from the MacTracker database):īasically, for a ~16 percent savings in purchase price over the 2.8ghz model, Apple achieved a ~50 percent reduction in performance. The next model up had a 2.8Ghz processor with four cores. ![]() For a start you bought the entry-level iMac model with a slow 1.6Ghz processor with only two cores. ![]()
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