View previous topic :: View next topic |
Author |
Message |
kevinx Regular Visitor
Joined: Jul 31, 2005 Posts: 216 Location: Northern Earth!! ;-) (Essex)
|
Posted: Fri Jul 13, 2007 11:05 pm Post subject: SD Card speed |
|
|
Does anyone know if a faster SD card would make any notable difference to the"refresh rate" of the map display of a TomTom One??
I use a Sandisk Ultra Extreme II, which has a read/write speed of 10Mb/sec and 9Mb/sec.
If I were to use a Sandisk Ultra Extreme III (read/write speed of 20Mb/sec) is this going to reflect any marked improvement?
Currently there seems a "little lag" of "my position" on the maps whilst moving (especially round bends/roundabouts etc), where the movement (on screen) may seem a bit "jittery". Would a faster card make any difference??
Odd question, I know, but lets find out!
Cheers _________________ HTC OneX (IceCreamSandwich), HTC DesireHD (Gingerbread) Co-Pilot Premium, GoogleMaps+CamerAlert352
TomTomOne (Original with the faster processor!)
v7.903, o/s 2344, GPSv1.21 Boot 5.0500
Mv710.1561(W Europe)+Traffic, N82 connection to GPRS traffic
+ |
|
Back to top |
|
|
Oldboy Pocket GPS Moderator
Joined: Dec 08, 2004 Posts: 10642 Location: Suffolk, UK
|
Posted: Sat Jul 14, 2007 7:17 am Post subject: |
|
|
The card is 60x and should be adequate for TTs purposes. When going round bends, etc. it will jump slightly, especially if not on a route. This is because the data stream is updated at 1 second intervals. In that time you could have move a long way. _________________ Richard
TT 910 V7.903: Europe Map v1045
TT Via 135 App 12.075: Europe Map v1120 |
|
Back to top |
|
|
kevinx Regular Visitor
Joined: Jul 31, 2005 Posts: 216 Location: Northern Earth!! ;-) (Essex)
|
Posted: Sat Jul 14, 2007 9:33 am Post subject: |
|
|
Thanks "Richard".
You have "hit the nail right on the head", and know where I'm coming from.
I Just find it a little annoying with the "jumping", and thought a faster card (20Mb/sec) may cure this.
Thanks for your feedback.
Cheers _________________ HTC OneX (IceCreamSandwich), HTC DesireHD (Gingerbread) Co-Pilot Premium, GoogleMaps+CamerAlert352
TomTomOne (Original with the faster processor!)
v7.903, o/s 2344, GPSv1.21 Boot 5.0500
Mv710.1561(W Europe)+Traffic, N82 connection to GPRS traffic
+ |
|
Back to top |
|
|
Andy_P Pocket GPS Moderator
Joined: Jun 04, 2005 Posts: 19991 Location: West and Southwest London
|
Posted: Sat Jul 14, 2007 8:38 pm Post subject: |
|
|
It's only if the card is really slow that it becomes the 'bottleneck'.
Above a pretty basic "fast" speed (say50x) the SD card ceases to be the slowest link in the chain, so any speed increase in that makes no perceptible difference. |
|
Back to top |
|
|
kevinx Regular Visitor
Joined: Jul 31, 2005 Posts: 216 Location: Northern Earth!! ;-) (Essex)
|
Posted: Sun Jul 15, 2007 12:08 pm Post subject: |
|
|
Thanks Andy
_________________ HTC OneX (IceCreamSandwich), HTC DesireHD (Gingerbread) Co-Pilot Premium, GoogleMaps+CamerAlert352
TomTomOne (Original with the faster processor!)
v7.903, o/s 2344, GPSv1.21 Boot 5.0500
Mv710.1561(W Europe)+Traffic, N82 connection to GPRS traffic
+ |
|
Back to top |
|
|
Steven0161 Occasional Visitor
Joined: Mar 26, 2006 Posts: 48
|
Posted: Mon Dec 31, 2007 3:03 pm Post subject: data stream is update on TT 520 |
|
|
Oldboy wrote: | The card is 60x and should be adequate for TTs purposes. When going round bends, etc. it will jump slightly, especially if not on a route. This is because the data stream is updated at 1 second intervals. In that time you could have move a long way. |
I have the same problem as I guess most TT One users regarding the 1 second delay as I also use a Sandisk Ultra Extreme III..
Now the sales are well and truely here I am 2 minds whether to buy myself a TT 520 do any 520 users have the same problem especially when going round roundabouts or turning corners.
cheers
Steven |
|
Back to top |
|
|
NukeThemAll Regular Visitor
Joined: Mar 31, 2006 Posts: 129 Location: Hampshire, UK
|
Posted: Mon Dec 31, 2007 3:16 pm Post subject: |
|
|
I have 'graduated' from a 1Gb 133x SD card to a card which claims a read speed equivalent to 66x; I've not noticed any significant degradation of map display. I too suspect that the bottleneck would be processing speed and/or update interval and/or internal limits on read speed.
What I do find interesting is having taken advantage of TT's up to half-price map offer and purchasing the WE map (hence card upgrade) the time taken to calculate a route has increased significantly (and I've done an exact comparison before anyone asks). Wonder why that is? _________________ TT GO app on Android Phone
|
|
Back to top |
|
|
|
Posted: Today Post subject: Pocket GPS Advertising |
|
|
We see you’re using an ad-blocker. We’re fine with that and won’t stop you visiting the site.
Have you considered making a donation towards website running costs?. Or you could disable your ad-blocker for this site. We think you’ll find our adverts are not overbearing!
|
|
Back to top |
|
|
|