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SD Cards.. Is High speed worth it....

 
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Tyrant
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Joined: Apr 01, 2006
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PostPosted: Sun Apr 02, 2006 6:13 pm    Post subject: SD Cards.. Is High speed worth it.... Reply with quote

I see there are "High Speed" SD cards available..

Are they worthwhile buying.. Is there a marked difference in speed.
I am going to be running Tomtom Nav 5, on my Ipaq H4150.

Just not sure whether its worth paying extra for a high speed card, or to go with a standard card. Will it make the sat nav run any smoother.

Rgds
neil
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Border_Collie
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PostPosted: Mon Apr 03, 2006 2:12 am    Post subject: Reply with quote

From my own experience, since using the Kingston Ultimate 512MB 133x High Speed card, the blue arrow on screen shows me actually passing a turning when I'm doing so, with my previous card, Kingston 1 Gig Standard, it always showed slightly behind where I was. Also the final voice indication, turn right or left, at, for example, a T junction, now comes about 20 yards ahead of the junction instead of at it.

Check the speed of your device, it may be 133x or 166x, get a card to match.

Have a look http://www.choicestationery.com/index.html
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Tyrant
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PostPosted: Mon Apr 03, 2006 2:30 am    Post subject: Reply with quote

Any ideas how to check the speed of my Ipaq..
I am trying to find out some info on the internet which tells me what speed , but cant find anything..

Rgds
Neil
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Border_Collie
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PostPosted: Mon Apr 03, 2006 3:00 am    Post subject: Reply with quote

I've found the following information on several sites.

Quote:
Expansion slot Integrated SD slot - supports SD/MMC type standard memory, SDIO options


It looks like Standard memory is your only option.

Check out the different standard cards, maybe some are faster than others. I would check but just realised the time.

If you are getting 'lag', try turning off any points of interest you have shown, this can make quite a difference.
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Mullet
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PostPosted: Mon Apr 03, 2006 5:25 pm    Post subject: Reply with quote

Tyrant wrote:
Any ideas how to check the speed of my Ipaq..
I am trying to find out some info on the internet which tells me what speed , but cant find anything..

Rgds
Neil


Bench test with the Pocket Mechanic demo. http://www.pocketgear.com/software_detail.asp?associateid=373&id=12178
Note that you are not only testing the card speed but the ability of the device to read it.
Though a card may be fast, the device interface probably will not be able to take advantage (unlike a digicam) making card speed less important than most people assume.
Here is an example of others findings http://www.durrans.com/cardspeed/
After defragging my 60x MSD card, the read speed is only 6.5x. So card speed is far less important than card/device manufacturer compatibility.
MDA Vario
Kingston 512 MSD
WM5 OS
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Border_Collie
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PostPosted: Mon Apr 03, 2006 5:46 pm    Post subject: Reply with quote

Quote:
Though a card may be fast, the device interface probably will not be able to take advantage


Exactly. That's why I didn't bother with a 166x.

My 1GB Kingston Standard Card is now in my digital camera, which allows me to take 62 TIFF pics, less than 1 second delay before ready for next shot, or 402 High Res jpeg with no delay between shots.

I suppose the only possible advanage Tyrant may have of using a 133x is, at least he'll know his device interface will be working full speed. Although would a few milliseconds make much difference?

Maybe others with an Ipaq H4150 running Tomtom Nav 5 could say which card they use.
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Tyrant
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PostPosted: Mon Apr 03, 2006 7:31 pm    Post subject: Reply with quote

Many thanks for the replies.

I kinda guessed that the cards would be faster than the IPaq could process. I am thinking on getting a 256mb Kingston elite pro , which is one up from the standard card, but not the ultimate which is fastest.
I think that maybe it would be better to put my four maps on 2 seperate 256 cards, rather than put them all on a 1gb card..
My guessing is more space on the card to search , maybe the slower the sat nav might display the info... It might only be a matter of hundredths or thousands of a second, but maybe more efficient all the same.
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Tyrant
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PostPosted: Mon Apr 03, 2006 9:40 pm    Post subject: Reply with quote

Had a live web troubleshooting session with an HP Engineer, and he told me that the Maximum rate for the H4150's SD slot was 17MBps.

Therefore I am gonna get a card which transfers at about that amount.

Thanks for all your help.

Rgds
Neil
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nobbybob
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PostPosted: Wed Apr 05, 2006 1:50 pm    Post subject: Reply with quote

i realise this might be slightly off topic but the hp ipaq helpsite trys to install some somftware to analyze my ipaq which keeps crashing my pc.
so here goes i got an ipaq 3870 and am trying to install tomtom nav 5 but my ipaq can not see some sd cards at all and some it tells me to format but when i try it gives me an error code 31 or 20 . i have upgraded the rom on my ipaq ( 2.20) but still no joy . these sd cards work fine in my 2210 so its not an sd card problem ,, any ideas //?? cheers
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chapsworth
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PostPosted: Mon Apr 10, 2006 1:09 pm    Post subject: Reply with quote

I've just puchased one of the £17.99 (although it's gone down a £1 this week!) SD cards (Dane Elec badged Toshiba) from 7dayshop. Using this with Memory Map on my 2210 and the speed seems fine.
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