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Tom Tom One SD card

 
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NukeThemAll
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Joined: Mar 31, 2006
Posts: 129
Location: Hampshire, UK

PostPosted: Fri Apr 14, 2006 12:16 pm    Post subject: Tom Tom One SD card Reply with quote

No doubt that this has been discussed before but....

I e-mailed TT tech support last night, had a reply within an hour (!) which I'll attempt to summarise:

SD card read speed should be at least 10Mb/second. For example, a 60x read-speed card reads at 150 Kb/s x 60 = 9 Mb/s. Card write speed is of course irrelevant during normal use

The TT1 (and GO) supports cards up to 4 Gb

Cheap no-name cards can cause problems such as poor read speeds and even data corruption; they may also have a 'weak' memory controller on the card which inhibits data flow
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prisci14
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Joined: Mar 01, 2006
Posts: 8

PostPosted: Sun Apr 16, 2006 1:18 pm    Post subject: Reply with quote

For a start would sandisk be ok?and if so there are so many variations of the same size card ,what should i pick?Any help always appreciated Smile
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Tumbleweed
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Joined: Aug 30, 2004
Posts: 315

PostPosted: Sun Apr 16, 2006 4:38 pm    Post subject: Re: Tom Tom One SD card Reply with quote

NukeThemAll wrote:
No doubt that this has been discussed before but....

I e-mailed TT tech support last night, had a reply within an hour (!) which I'll attempt to summarise:

SD card read speed should be at least 10Mb/second. For example, a 60x read-speed card reads at 150 Kb/s x 60 = 9 Mb/s. Card write speed is of course irrelevant during normal use

The TT1 (and GO) supports cards up to 4 Gb

Cheap no-name cards can cause problems such as poor read speeds and even data corruption; they may also have a 'weak' memory controller on the card which inhibits data flow


I was looking at a friends 700 last week and was surprised how slow it was compared to my 300 when looking at maps and dragging them around, which I put down to the speed of the HD (as its got a faster processor than the 300 so it wouldnt be that). I wouldnt mind betting the disk in the 700 is slower than most memory cards.

The £6 (was a tenner when I bought it) 256Mb Kingston SD in my 300 is according to Amazon rated as 'fast memory transfer speed, at least 2MB/sec' !!

Tw
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NukeThemAll
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Joined: Mar 31, 2006
Posts: 129
Location: Hampshire, UK

PostPosted: Sun Apr 16, 2006 5:03 pm    Post subject: Reply with quote

The implication is that 'respected' makes - such as Sandisk (?) are deemed to be more reliable than no-name offerings. Having just ordered a 1 Gb SD card, a Kingston 133x at about £26 from PicStop, I can report back in a week or so on my experiences.

BTW, I have noticed (no big surprise) a large difference in prices of 1 Gb SD cards, even amongst the internet retailers. I'd have needed a second mortgage for some of the high-street prices.....

Main reason for purchase is that I've just acquired a TT1, a decision helped enormously by this web site - a huge, huge thanks to all the contributors and moderators for their insightful and often witty comments!

I intend to load the speed camera POI data and have room for any maps of Europe, and keep the original card as the ultimate backup. With current prices, a 1 Gb card seems to be the best purchase - I won't be needing all of the European maps loaded for any single holiday.
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prisci14
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Joined: Mar 01, 2006
Posts: 8

PostPosted: Mon Apr 17, 2006 1:16 pm    Post subject: Reply with quote

thanx for the speedy comeback guys!just what i needed :D
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MR_TiGGer
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Joined: Apr 20, 2006
Posts: 94
Location: God knows!! Ask Jane

PostPosted: Fri Apr 21, 2006 12:41 am    Post subject: Reply with quote

www.scan.co.uk Is a Fine Place to get stuff like that, of at least give you a "Realistic" price unlike PCWorld and such
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mfs227
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Joined: Mar 08, 2006
Posts: 5

PostPosted: Fri Apr 21, 2006 12:36 pm    Post subject: Re: Tom Tom One SD card Reply with quote

Tumbleweed wrote:
NukeThemAll wrote:
No doubt that this has been discussed before but....

I e-mailed TT tech support last night, had a reply within an hour (!) which I'll attempt to summarise:

SD card read speed should be at least 10Mb/second. For example, a 60x read-speed card reads at 150 Kb/s x 60 = 9 Mb/s. Card write speed is of course irrelevant during normal use

The TT1 (and GO) supports cards up to 4 Gb

Cheap no-name cards can cause problems such as poor read speeds and even data corruption; they may also have a 'weak' memory controller on the card which inhibits data flow


I was looking at a friends 700 last week and was surprised how slow it was compared to my 300 when looking at maps and dragging them around, which I put down to the speed of the HD (as its got a faster processor than the 300 so it wouldnt be that). I wouldnt mind betting the disk in the 700 is slower than most memory cards.

The £6 (was a tenner when I bought it) 256Mb Kingston SD in my 300 is according to Amazon rated as 'fast memory transfer speed, at least 2MB/sec' !!

Tw


The cheap card I used was manufactured by Hamma and just isn't up to snuff.

mfs227
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NukeThemAll
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Joined: Mar 31, 2006
Posts: 129
Location: Hampshire, UK

PostPosted: Fri Apr 21, 2006 6:56 pm    Post subject: Reply with quote

I've now installed my Kingston 1 Gb 133x card, purchased for ~£26 from PicStop, and all seems to be fine - although I've only used it as a 'working card' with just the UK mapping, leaving the original card as the ultimate backup (and yes, I have also backed up to a PC).

Early days with my TT1 but so far, very impressed. As expected, noted a few map mistakes on my local roads, but no consistency - some mistakes are on quite old changes eg new roundabouts, but more recent changes, like 3-4 years ago, seem to be there.
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