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 [GUIDE] Sorting through the GPS Chipsets on Garmin

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T O P I C    R E V I E W
gpspassion Posted - 24 oct. 2008 : 20:20:19

Index : 1. Introduction / 2. The Move to High-Sensitivity / 3. High-Sensitivity Galore
4. Full List of GPS Chipsets and GPS Systems

1. Introduction : Until 2005, Garmin GPS systems, be they handheld (eTrex, G60/G76), mixed (GPSV), car (SP2610, C320) or Marine (GPS276) used a "low sensitivity" Garmin chipset, with little correlation power. This meant long acquisition times (you could help by giving an approximate position), frequent loss of position in difficult environments (dense urban areas, forests with thick tree cover, etc...) and no operation at all (coated windshields). On the other hand the position was very stable as the module could only work with "clean" signal.

Continued in this article on the portal.

Questions, comments ?
15   L A T E S T    R E P L I E S    (Newest First)
sussamb Posted - 17 juil. 2012 : 13:52:24
It's most certainly region dependant ... the EU 13xx and 14xx series have 4GB, the US versions only 2GB.
Toby737 Posted - 17 juil. 2012 : 09:56:18
I think it's also region dependant. I know for a fact that the EU 35xx series has 8GB internal memory, whereas the AU 35xx series only has 2GB internal memory. It's most likely similar for all the nuvi series as the maps for AU & NZ are smaller in file size than the EU and US maps.

It does kinda suck tho that Aussies pay more for a 3590 that only has 2GB capacity, than the EU 3590 8GB version.
NanaimoRick Posted - 03 juil. 2012 : 16:26:17
Pulled these internal storage numbers from a number of sources, so don't ask were I found them as I simply don't remember and I can't guaranty them 100% :

Nuvi 30/40/50 = 2GB
24x5 and 25x5 series including the 2595 = 8GB
3400 = 8GB

For some of these model's I've seen numbers in the 7+gb range but I'm betting that's 8GB less the system overhead.
gpspassion Posted - 26 juin 2012 : 13:05:12
Which models do you have in mind, the 2xx5 series ? Unfortunately Garmin doesn't publish any specs, but based on the pricing of the 3xxx and 2xxx series, the 3xxx must use more expensive components, the higher-resolution "iPhone like" screen for a start.
ELEGEND_YVR Posted - 25 juin 2012 : 04:01:24
Do we know what the memory capacity is and the cpu speed of the newer 2012 garmins are?
gpspassion Posted - 10 janv. 2010 : 18:21:04
Just updated my nuvi 550 to v3.50 and the GPS Firmware is still at v2.47b, odd since the Oregon with ST Micro Cartesio is at v3.70b, maybe a different chip after all.
gpspassion Posted - 04 déc. 2009 : 20:22:12
v4.10b topic -> - it seems they might be have pushed the sensitivity a bit too much...
gpspassion Posted - 01 déc. 2009 : 01:23:07
Still 3.70b on the Oregon with SW v3.40 and v2.47b on the 550 with SW v3.40 !...Article now updated with an intro for 2009 ->
gpspassion Posted - 27 nov. 2009 : 20:44:26
Good catch, let's find out about the Oregon first.
Dewi Posted - 27 nov. 2009 : 20:33:57
Cartesio FW is now at v4.10b (in the latest 1XXX and 2X5 software, maybe Oregon too). The portal page should be updated.
gpspassion Posted - 04 août 2009 : 12:48:46
Interesting and interesting to see that topic ends with a link to my MTK v2 testing ;-)

Wonder how they established it was indeed MTK v2 though, normally you would look at copyright info or GPS SW version like we tried to do with louchem last year on the previous page when he was having problems updating his eTrex and we suspected it might be MTK v2 already.
jotne Posted - 04 août 2009 : 12:42:41
New 60csx are using the MediaTek MT3329, more info here.
gpspassion Posted - 25 mai 2009 : 11:42:39
Originally posted by gpspassion

Thanks for the update, hard to understand what's going on! I'll see if I can get some info on that potential new chipset/platform. Since the eTrex H series use the MTK v1 chipset maybe they've switched to the MTK v2 chipset already used on the Qstarz Nano BT dataloggers. Could you tell us how you find the performance of your eTrex in the eTrex H Topic?

Some news on this front with this PR announcing the new MTK v2 (MTK3329) chipset...that's been available since late last year, but MTK are now saying it has been adopted by Garmin, but not in the eTrex H but on the GPSMap60, which seems odd since that platform has always been SiRFStarIII based. Either that has changed or they got the model wrong!
gpspassion Posted - 23 avr. 2009 : 20:13:24
You appear to have a nuvi 2x0 v2 based on the 2x5 platform, very similar except it didn't get the Ecoroute update ->
NotMoneyGuy Posted - 23 avr. 2009 : 18:03:26
My nuvi 260 has Software Version 5.00, Audio Version: 1.00, and GPS SW Version: 2.55b. Also microSD slot. Discontinuation seemingly made for some nice upgrade goodies, really like this unit.

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