Smooth Scrolling in TTN5

wingerii · Occasional Visitor Joined: Nov 08, 2004 Posts: 10

Has anyone else notice that the speed of scrolling in TTN5 seems to be at least partially SD Card speed dependent?

Viking 512MB card scrolls about half the speed of my 1GB Kingmax.

Wingerii

Quantum · Posted: Mon Jun 06, 2005 1:26 pm Post subject:

I have no doubt that this is the case, although I haven't received my kit yet to test. SD is only ever 1 bit or 4 bits wide.

I bought a Sandisk UltraII SD card for this very reason.
(The Extreme isn't worth the extra money -- same speed, but broader temperature range)

blurredout · Occasional Visitor Joined: Nov 26, 2004 Posts: 16

That will explain why the map scolls as slow as TT3 when all the speed camera's are displayed on the 3d view.
I better upgrade to a faster sd card then Sad

vanstmic · Occasional Visitor Joined: Dec 10, 2003 Posts: 25

What is generally regarded as a fast SD card??

I was considering getting a 1GB card with 66x speed to run Tomtom 5

wingerii · Occasional Visitor Joined: Nov 08, 2004 Posts: 10

Mines a 66x kingmax 1GB. Does the trick for about £50!

Scrolls smoothly it does, even with POIs!

DavidW · Posted: Tue Jun 07, 2005 5:28 am Post subject:

I regard the headline speeds as not necessarily comparable.

I had an Integral High Speed 1GB SD card, which was 66x. Not only did it keep crashing Navigator 3 on my iPAQ hx4700 (tested with the old 1.00 ROM), but I could make that card misbehave in a card reader on a PC.

Suffice it to say that I returned it for a Lexar 32x card, which was much more stable.

David

psneddon · Occasional Visitor Joined: May 26, 2005 Posts: 11

I dont really think this is the case that the update speed is related to the speed of the card. For example if you choose demo mode and choose 500% then it totally zoooms. Probably more to do with having too many POI's on screen is my take on it.

wingerii · Occasional Visitor Joined: Nov 08, 2004 Posts: 10

I absolutely guarantee, I have run IDENTICAL setups inc. POI's on a 512MB card (normal speed) and a 1GB Hi-Speed card.

Estimate 3fps on slow card, 10fps on 1gb.

psneddon · Occasional Visitor Joined: May 26, 2005 Posts: 11

What happens when you try the demo route feature and choose 500%. I agree with what you are seeing is probably right. However I still dont think the cause is down to the card speed as tomtom isnt transfering that much data each second. Have you done any tests using high bitrate video files. Could it be that the slower card is heavily fragmented?

I am very interested to know if the quality/brand of card makes such a difference - as I'd choose more carefully next time I buy one. I usually just buy the cheapest Smile

nnishp · Occasional Visitor Joined: Apr 21, 2005 Posts: 15

I got my tt5 today. I have a standard sd card 512MB, unbranded the cheapest my local store had. My tt5 is scrolling much more smoothly than my tt3 used to. I dont actually think it could be any smoother. The card cost me £27 and im using it with an rx3715. Dont know about write or read rates but i cant imagine it to be as high as the pricier cards

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