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How to tell the difference 512mb model b

Posted: Wed Oct 31, 2012 12:18 pm
by Rob Kelz
Hi I just got my first Raspberry PI and I was wondering how I can tell if it is a 512mb model?

I have been told to look at the chip and if it says 4G it will be 512mb model but I cannot read the chip as it has a heatsink on it?

Many thanks in advance,
Rob

Re: How to tell the difference 512mb model b

Posted: Wed Oct 31, 2012 5:32 pm
by liz
Download the new firmware (it's on the downloads page - link at the top of this page) and you'll be able to see how much RAM you have.

Re: How to tell the difference 512mb model b

Posted: Wed Oct 31, 2012 6:35 pm
by Joe Schmoe
Note that there was some confusion regarding the various methods of "detecting RAM size via software (i.e., from within the OS)". Specifically, a) you had to be running the latest firmware and b) there was some chatter to the effect that the "Revision" thing (in /proc/cpuinfo) wasn't reliable because it wasn't set right in some production runs (and/or that it was being fudged in software).

For these reasons, I share the OP's concern that it would be nice if you could tell (definitively!), from the outside, what the hardware is. I, too, tried to read the markings on the chip, but could not do so, even with a magnifying glass. Note: My machine is a 512M, of this I am quite confident, so I'm not looking for help on that score, but, as I say, it would be "nice" if the "reading the chip" method was reliable. Maybe I need a higher power magnifying glass...

Re: How to tell the difference 512mb model b

Posted: Wed Oct 31, 2012 10:56 pm
by lordloh
just wondering, what does

Code: Select all

free -m
tell? Will that be accurate?

Re: How to tell the difference 512mb model b

Posted: Thu Nov 01, 2012 1:17 am
by Narishma
It will only be accurate if you have the latest firmware installed.