I am a biologist working in fish evolution and I work a lot with different bioinformatics tools and sometimes it requires a lot of RAM. I have an iMac i7 2010 and there was only 4 Go of RAM (1067 MHz DDR3) in it when I bought it. I really needed the maximum memory I could get on this computer, so I bought this RAM package, which is designed to be compatible with apple products. The shipping was VERY fast (the item was delivered in less than 24 hours !) and it was easy to install in computer. I've had no problem so far. I saw on some forums that some people might find their computer slow after about a week after the installation. The problem is not the RAM modules ! You have to reset your memory on your computer if it happens to you ! Here is how you do it :
--> RESET PRAM : hold option ("alt") + command + R + P and press the power button, let it go to the white screen and restart and let go of all the keys - Reset Parameter RAM (PRAM) and non-volatile RAM (NVRAM)
That should work ! It's not all computers that do that, but just in case. I've seen a lot of customers return their RAM memory to Amazon, but it won't change anything to replace the RAM by another set of memory modules.
Hope you enjoy your new computer with more memory !