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October 19, 2012 AT 11:00 am

Read the manufacturing code to identify the RAM your Pi has without turning it on #piday #raspberrypi @Raspberry_Pi

We have been very happily making projects with our 256MB RAM Raspberry Pi in-house for many weeks — but we know that many members of the Adafruit community are excited about the new 512MB RAM versions that we are now offering. As so many of us are acquiring little squadrons of the little Pi computers on our desks, here’s a great note from RaspberryPi.org to help you identify which RAM version you have without even plugging it in:

We’ve had some people ask how they can tell whether they’re holding a 256MB RAM Raspberry Pi, or its big brother, the 512MB RAM version. Easy enough once you’ve turned it on, but you don’t even have to do that: you can just decipher some of the manufacturing code on the top of the SOC. Thank you SaltSpork for the photos.

RaspRAMcheck

RaspberryPiRAM_02

See the long strings of letters and numbers underneath the word “Samsung” on the RAM chip in the middle? That’s the top part of the PoP, or Package on Package assembly which stacks the processor (the Broadcom 2835, hidden under the memory) beneath the RAM.What you’re looking for are the letters “2G” or “4G” somewhere in that string. The top picture has “4G” written on it: that means 4Gbits, which equals 512MB. ”2G”, which you’ll see in the bottom picture, means 2Gbits, or 256MB. Easy as Pi, when you know how.

Read more.


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