Garmin Internal Memory Sizes

Start your GPS not connected to the PC.

When it is booted, go to the "Where To?" screen on your GPS. From this screen press and hold the 'Battery Bars' for 8-10 seconds.

This should bring up a diagnostic screen on your GPS. On my diagnostic screen the mem size is right on the top banner of that screen. Yours may be different.

Thanks,

2 gigs

2GB

I don't see a memory size for the 2360. Does anyone know if it is 4 or 8?

I want the most memory possible on my upcoming purchase...

Thanks!

Sorry, post deleted...above question still open.

@TheVanman ,

I found the 2360 mem size in a review of it on another site.

2360 -> 8GB

Thanks Bear. I was searching other sites too and nobody I found was posting the info. As a matter of fact, I dont see anyone including Garmin posting that stat for any of them.

Now it is a toss up between the 2360 and the 2460. 5" screen for another $40?.....Decisions!

Vanman

My garmin nuvi 265w has 1.8gb internal memory not 2gb.

I was wondering if i were to use a memory card, could i install junction view onto that portion and run it on the 265w?

It has 2 gigs, but is calculated at 1000 megs per gig, not the true 1024 megs per gig.

Sorry, the 265 doesn't support Lane Assist or Junction View.

As Juggernaut already said, the PC is just interpretting the memory as 1.8GB.

On your GPS Where To? screen press and hold the battery icon for 8-10 seconds and a diagnostic screen should appear. It will probably show the actual memory size and cpu speed.

Thanks,

maybe you toss a coin or ... bigger is better! I don't know! If you're looking to buy a new toy $40.00 bucks apparently is not going to make or break you. So go ahead and buy the bigger toy, it's the one you seem to really want and you'll always think about it if you don't! (well, not always)

I bought the zumo 660 at a bigger price because I decided not to settle for less than I really wanted.

NO, I'm not a Garmin salesman. I just think if you're buying yourself a toy, get the toy you really want!

One is just as true as the other, it is just that the two systems gather bytes into different size bundles.

Say we have a storge device with exactly 2000000000 bytes of storage space.

How many giga bytes is that?

Using the SI system of prefixes (powers of 1000) we would divide 2000000000 by 1000^3 (ie 1000000000) and get 2 GB.

Using the IEC system of binary prefixes (powers of 1024) we would divide 2000000000 by 1024^3 (ie 1073741824) and get 1.86264514923095703125 GiB.

Note that the IEC system recommends that "GiB" be used so as to indicate a different type of "Gigabyte" is involved.

The cause of some of the confusion is that Windows uses GiB units but calls them GB)

So in terms of SI prefixes we have 2 GB and in terms of IEC binary prefixes we have about 1.86 GiB but both indicate an actual total of 2000000000 bytes.

So don't feel cheated if you "only" get 1.86 GiB reported by Windows instead of 2 GB as shown by a Garmin diagnostic screen.

Would you feel cheated if you were given 1 dime instead of
2 nickles?

The dime gathers cents into bundles of 10 while the nickle gathers cents into bundles of 5.

So it takes more nickles to make ten cents.

The same confusion related to GB vs GiB would happen if both the nickle and the dime were called "nickle".

Now, reverse that calc and do a 2 gigs at 1024. That would be 2,097,152 kilobytes, as opposed to 1,887,437 kilobytes with GiB.

As I've stated before, ISP's use GB's, not GiB's so consumers lose both ways. Yes, we are being cheated.

If you " reverse the calc" you would multiply 2 GB by 1000000000 and get 2000000000 bytes.

Also you would multiply 1.86264514923095703125 GiB by 1073741824 and get 2000000000 bytes.

You always use the same factors to "un-gather" the bytes as you used to 'gather" them.

Try it with 1024 as I plainly stated in what you quoted. Right?

No that is not the way to do it.

.

Memory chips are built in a square matrix so capacity is measured as powers of 2. Therefore a 2 MB memory module is 2048000 bits. I have yet to see a memory chip set use base 10 addressing.

Some reasons you may see lower figures for a particular chip size is due to space taken for error correction bits and even bad bits.

Say you have 1000 dollars.

You put the money up in packets of 100 dollars resulting in 10 packets (1000 divided by 100).

If you had put the money up in packets of 110 dollars, you would have 9.090909 packets. (1000 divided by 110)

If you wanted to know how much money is in the 10 packets (figured on a packet size of 100) would you multiply 10 by 110?

As Boxcar so graciously pointed out, computers do not use base 10.

Computer drive manufacturers have used base 10 for storage drives since year one and don't forget that Garmin GPSr units present the "memory" as a drive. Obviously Garmin is using base 10 when they show the size in their diagnostic screen.

All this is way over my head. Reminds me of math class in high school.

I think, for the purposes of this thread, we are only worried about what the GPS thinks its has. No need to complicate things here. People just want to know what they'll be able to fit in memory.

Please use the diagnostic screen if the GPS has one and let us know what it reports. If none, then report what windows or MAC reports and we'll figure it out from there.

Thanks to all,

If I need to replace my c340 (would be a bad day if this happened) I would probably go with the 2460 for the extra screen size. Also, 8GB vs 4GB on the 23/24 50s is an added bonus for future updates.

That is wrong in so many ways that I take it that you are joking.

If you are not joking then be aware that 2 MiB is 2097152 bytes and since there are 8 bits per byte it would be 16777216 bits.

That is the first I have heard that memory chips are "built in a square matrix" but even if they were, there is nothing about a square matrix that would require use of powers of two, since a square matrix could be 2x2, 3x3, 11x11 etc.

Anyway, I believe that the powers of two thing comes from the way memory is addressed rather than the way it is constructed.

OK, I will be quiet now.

I believer Evert is on target so I will invoke another source.

Wikipedia has a good article on the history of the subject. Since the differences in the way disk space is referenced by manufacturers will be with us forever (I'm afraid), I recommend everyone read it.

http://www.google.com/search?q=wikipedia+byte&sourceid=ie7&r...

Note how this is similar to references manufacturers use for display screen sizes where the 32" screen is measured on the diagonal, not on the width as one might expect.

Small-block NAND Flash devices contain blocks made up of 32 pages, where each page
contains 512 data bytes + 16 spare bytes. Large-block NAND Flash devices contain
blocks made up of 64 pages, each page containing 2,048 data bytes + 64 spare bytes. For a
1Gb NAND Flash device, this translates to 8,192 blocks in the small-block organization
and 1,024 blocks in the large-block organization.
These organizational differences are highlighted in Figures 1 and 2 on page 2 and in
Table 1 on page 3.
http://cache.micron.com/Protected/expiretime=1310048242;badu...

Yes, please! Don't care one way or the other how the calculation is made. Just want to know what the internal memory size is on a particular Nuvi model. That would be - is it 2Gb, 4Gb, or 8Gb.

I agree. Ask a simple question and you get answer that you can't understand.

I don't always trust what is said in a "review".

I posted on a couple of sites asking someone who owns a 2360 to please confirm the memory size. Finally, a 2360 owner responded and confirmed that his unit has, in fact, 8GB.

8GB would be, I believe, approximately 7.450580596923828125 GiB.

That is far as my calculator carries it out also.

And for those that "just want to know what they'll be able to fit in memory" both indicate 8000000000 bytes or 64000000000 bits.

Zumo 665 -> 4
Zumo 550 -> 0.5* Aus
Zumo 550 -> 1.2 US
Zumo 550 -> 2.1* Euro

* To the best of my memory.

Nuvi 250W -> 2GB
Nuvi 255W -> 2GB

I suspect the other widescreen nüvis in the 2x5 series (2x5W) and the 260W all have 2GB of memory.

Etrex => zero

Yes the specs say “no built in memory”. Apparently the operating software, saved waypoints, and automatically generated tracks are all stored in an EEPROM chip or some such and there is no separate memory chip.

Etrex Legend => 8 MB
Etrex Venture HC => 24 MB

That’s right MB and not GB. Now don’t you with GB sizes feel really blessed with lots of memory?

My brother-in-law was contemplating buying a nuvi 1490LMT but the 2460LMT appears to be the better buy long term with its increased file storage space.

Thanks again!

That's what it's for. To help make buying decisions and help others troubleshoot problems.

This info is extremely helpful in making my buying decisions.

Many people are not aware that some models in the same line have a larger internal memory. Those that come with pre-loaded maps/charts seem to have a larger memory.

Thanks.

I am still watching for new additions to the list. Keep them coming.

nüvi 780 -> 2GB

On my 765T, I held down the battery indicator for 10 seconds to get to the diagnostic screens.

The top line reads
SW Ver 4.00 nuvi 765 V9 4GB P1 DH04_R 330MHz

My assumption is that this is a way we can find out what the internal memory is.

This works for the zumo 660 also and I have read here that many other units can get to this info on the diagnostic screen the same way. We don't know which units can or can not do this though!

See post
http://www.poi-factory.com/node/1132

I contacted Garmin requesting the internal memory sizes of the just release line of GPSs and received the following info.

-FROM GARMIN-
Please be advised that there are many factors that can determine how much internal memory each unit has. This can include if it is a regional device, so if it has just US mapping or just Canada mapping versus all of North America.

The junction view files and other internal files can also determine how much internal memory or available memory a unit has. So, the following list is just an approximation of what total memory size you can expect to see on the nuvi unit.

nuvi 30/40/50 - approximately 1.76 GB total memory

nuvi 24x5 and 25x5 series- approximately 7 GB total memory

nuvi 3400 series - approximately 7GB total memory

That definitely rules out the nuvi 30/40/50 from being units with future hassle-free map updates so I'll avoid them like the plague.

It also makes me wonder just how many Junction Views are going to be available on these units now and with future map updates. As far as I've seen, Garmin still doesn't state in any product info that the number of JVs varies between nuvi models.

It's amazing. I imagine the marginal extra cost to give a unit 4GB instead of less than 2GB to be minimal and think that Garmin is adding to their future Customer Service calls and headaches/costs by saving a few bucks up front with these low-end models, at least for owners who will update their maps even if it's just the one free update with a newly purchased unit.

That is a very imprecise answer from Garmin. The way they worded it makes it hard to tell if they are giving out-of-the-box free memory or total memory. If it is really total memory, then it wouldn't matter what the unit has for partial maps or junction view files. Total memory is total memory.

Agreed. Until we have a user report, I'm going to hazard a guess that they do mean Total Memory and not free memory. They could be hedging their statement since some models (see the original post in this thread for the 23xx series, for instance) are supplied with more memory for dual NA/Europe map sub-models and less memory for the Aussie units compared to the standard NA-only or Europe-only original map sub-models.

This thread really begs to be added to The POI Factory's Garmin FAQs.

I can state positively that any units such as the older 770 and the 775 all have larger internal memory in torder to hold both the NA an dEur maps that are pre-loaded on them.

I'm not sure if Garmin currently has any units now that offer both map sets pre-loaded.

They do sell a "LifeTime" map update which includes both N.American AND European maps for the units which had them pre-loaded.

Yes, they do. There is the 1370T, 2370LT and the new 2475LT.

Check out the video on Canuk's post on Garmin's new lineup and features. http://www.poi-factory.com/node/34358

As I undertand it, the basic line will have a limited JCV file, if at all. It will probably not even be photo real. These units are intended for the occasional user.

The advanced line will have photo real JCV's.

The premium units will have photo real JCV's, plus a few new bird's-eye JCV's at those intersections where two turns come close together. There is a good representation of one on the video.

But, as you note, there is no hint as to the size of any of the files.

Watch the video and decide for yourself what you think may be coming.

The internal memory for my Dakota 20 is 1 GB, 939 MB actually according to my memory loss!

As has been suggested a few times in this thread, I will soon make this a FAQ.

I just back from vacation where I put 3,435 miles on the Harley riding from PA to the Ozark mountains, riding the mountain roads for the week and returning. I seemed to have done a little more than my body wanted on this trip. So I'll organize the FAQ when I feel a little better. The zumo 660 was fabulous and flawless. The tracks will show we covered all of NW and Central Arkansas.

P.S. motorcycle riders should avoid riding on the east bound lanes of I-70 in Indiana, west of Indianapolis. The horrible road conditions and bouncing all over put a hurtin on everyone on the trip.