Does memory have to be installed in pairs? 2010 White Unibody

dmk1974 · Jul 17, 2011, 06:09 PM

I tried upgrading my daughter's 2010 white unibody MacBook with a single 4GB chip, but when I tried to boot, it beeped and didn't complete booting up. Do I have to install in pairs? Or perhaps I did something else incorrect? When I put the two original 1GB sticks back in, it booted fine. Thanks!

simsaladimbamba · Jul 17, 2011, 06:16 PM

It doesn't need to be.
I ran my MBP with one 2GB 1066MHz and one 4GB 1333MHz module for two months without problems (I purchased another 4GB module then).
Maybe the RAM module you bought is kaputt. Contact the shop you bought it from and ask for a replacement.

dmk1974 · Jul 17, 2011, 08:09 PM

The stick I am trying to install is a bit faster (for the 2011 MBP). Tried again individually in both banks, no luck. I also tried the two 2GB sticks together from that 2011 MBP and they didn't work either. I thought that I read that the 2010 white MB could use that RAM (while running at the slower setting), but perhaps not???

Jul 17, 2011, 06:09 PM	#1
dmk1974 macrumors 65816 Join Date: Sep 2008	Does memory have to be installed in pairs? 2010 White Unibody I tried upgrading my daughter's 2010 white unibody MacBook with a single 4GB chip, but when I tried to boot, it beeped and didn't complete booting up. Do I have to install in pairs? Or perhaps I did something else incorrect? When I put the two original 1GB sticks back in, it booted fine. Thanks!
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Jul 17, 2011, 06:16 PM	#2
simsaladimbamba macrumors Core Join Date: Nov 2010 Location: in front of it	It doesn't need to be. I ran my MBP with one 2GB 1066MHz and one 4GB 1333MHz module for two months without problems (I purchased another 4GB module then). Maybe the RAM module you bought is kaputt. Contact the shop you bought it from and ask for a replacement. __________________ This is not
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Jul 17, 2011, 08:09 PM	#3
dmk1974 Thread Starter macrumors 65816 Join Date: Sep 2008	The stick I am trying to install is a bit faster (for the 2011 MBP). Tried again individually in both banks, no luck. I also tried the two 2GB sticks together from that 2011 MBP and they didn't work either. I thought that I read that the 2010 white MB could use that RAM (while running at the slower setting), but perhaps not???
	0