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Thanks Man...I have tried checking with each individual module..both 8gb modules are working,but not together!!

I have tested with Crucial even I have the same prob with those modules so i have ordered OWC 2 days back,Still unable to make use of 16 gb (2 x 8gb)..:(

***Update:9th Oct 2012...I'm able to make use of 16gb on MBP9,2 13" 2012 10.8.2..Finally ;)

After resetting PRAM(Command + Option + P +R) on mbp my 16 gb memory has been detected and working very smoothly!!
(Command + Option + P +R) need to used at the time of system booting..
 
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16gb ram 2012 MBP

I have a 2012 MBP 15" 16gb ram 1tb hd and it works great and runs extremely fast. I have windows 7 and 8 installed using Parallels 8 and it runs very fast because of the ram upgrade.
 
I tried upgrading 16gb(OWC modules) on my MBP 13" 2012 Mbp 9.2 with 10.8.2 OS...unable to boot after upgrade!!...it was giving beep sound..rt now its working on 8 gb (on single slot)

Anybody got the same issue? r anybody got solution to fix this issue...

Plz help me to fix this issue...thanks in adv..

I bought OWC's RAM for my MBP 13" in the same configuration as yours and haven't got any problem. The bottom module might be a little hard to set in though
 
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