Review on 💾 8GB 1066MHz DDR3 (PC3-8500) Apple Memory Module - 2x4GB SO-DIMMs: Enhanced SEO-friendly Product Name by Brandon Ball

I manage six old Macs that require PC3-8500 RAM and I've already taken all but one until to 8GB. I've upgraded the memory of about 30 Macs over the last few years. I bought this RAM from Dataram. It was clearly marked PC3-8500 RAM. The modules I received didn't work on any of my Macs. I was able to get a computer (a 2010 MacBook Pro) to boot with it, but it never completed the boot process. MBP 2009 and 2009 and 2010 MB crashed at power on due to memory beeps. I was able to run MemTest86 (version 7) on a 2010 MBP which started to boot. Memtest86 reported the modules as PC3-10600. 10600 RAM just won't work on a Mac that needs 8500 sticks. I don't understand why the flash drive label and the MemTest86 reports were incompatible. Lesson to Learn: Standard RAM is inconsistent in quality. Install and test any new memory immediately before accepting it - ALL errors are bound to cause the kernel to crash and panic. Use Memtest86 (yes it can work on Mac).