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Smooth Scrolling in TTN5

 
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wingerii
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Joined: Nov 08, 2004
Posts: 10

PostPosted: Mon Jun 06, 2005 1:12 pm    Post subject: Smooth Scrolling in TTN5 Reply with quote

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
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Quantum
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Joined: 16/02/2003 03:21:58
Posts: 285
Location: Seattle, Ecotopia

PostPosted: Mon Jun 06, 2005 1:26 pm    Post subject: Reply with quote

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)
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blurredout
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Joined: Nov 26, 2004
Posts: 16

PostPosted: Mon Jun 06, 2005 3:39 pm    Post subject: Reply with quote

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
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vanstmic
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Joined: Dec 10, 2003
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PostPosted: Mon Jun 06, 2005 4:26 pm    Post subject: Reply with quote

What is generally regarded as a fast SD card??

I was considering getting a 1GB card with 66x speed to run Tomtom 5
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wingerii
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PostPosted: Mon Jun 06, 2005 8:56 pm    Post subject: Reply with quote

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

Scrolls smoothly it does, even with POIs!
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DavidW
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Joined: 17/05/2003 02:26:21
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Location: Bedfordshire, UK

PostPosted: Tue Jun 07, 2005 5:28 am    Post subject: Reply with quote

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
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psneddon
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Joined: May 26, 2005
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PostPosted: Tue Jun 07, 2005 11:14 pm    Post subject: Reply with quote

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.
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wingerii
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PostPosted: Tue Jun 07, 2005 11:28 pm    Post subject: Reply with quote

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.
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psneddon
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PostPosted: Tue Jun 07, 2005 11:36 pm    Post subject: Reply with quote

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
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nnishp
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Joined: Apr 21, 2005
Posts: 15

PostPosted: Tue Jun 07, 2005 11:52 pm    Post subject: Reply with quote

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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