Hola guys! Been having some strange RAM issues with my macbook pro. I just got this macbook, 15" pro (mid 2012 model) with 4GB ram. I'm doing some CAD stuff so I decided to upgrade the RAM. I bought 8GB of Samsung ram (2 4 gig sticks) from Microcenter, here's a link to the exact RAM: http://www.microcenter.com/product/380715/8GB_DDR3-1600_(PC3-12800)_CL11_SO-DIMM_Dual_Channel_Laptop_Memory_Kit_(Two_4GB_Memory_Modules) Installed it and everything was fine and dandy. Then a few days ago my macbook froze so I had to hard reset it. When I turned it back on, it gave me the 3 beeps. So I took the RAM out and re-installed it, worked, sweet. The next day, same thing happened, I did the same thing again, and it worked again. It was also running rather warmer than usual. Today I ran the Rember application and let it run while I went out for lunch. I came back home and my mac was giving the three beeps. Took the ram out and re-installed it, 3 beeps. Took it out again and re-installed 1 stick, worked. shut it down and installed the second stick, worked. Its running fine now, not even warm either, but removing and re-installing the RAM every day is getting to be a real pain in the neck. Any ideas on what could be going wrong? I made sure the ram was inserted properly and everything. I'm temped to return this ram and buy some Crucial ram: http://www.newegg.com/Product/Product.aspx?Item=N82E16820148614 I've read success stories about that RAM. Anyway thanks for any input! P.S. - Does the latency really matter?