SDIO Wifi Card - which one? - MDA, XDA, 1010 Accessories

The Pretec Wifi card has just come out and seems to be cheaper than the SanDisk and Socket cards. Can anybody tell me which is the best card? I read that the SanDisk/Socket cards have data rate limit of 250kbits/sec - I'm not sure if this is an SDIO limit or the card design. Can anybody with a Pretec card tell me what its power consumption/data rate are like?

Related

[help:] MMC vs SD

Hi everyone,
I'm confused which card is more compatible for O2 XDA IIi (Alpine) apart from the brand ?
is it:
SD
or
MMC / MMC+ / MMC Dual Voltage ?
Thanks
AFAIK both SD and MMC card works for the xda2i?alpine.though you have to buy a card with a fast write/read speed.
As far as I know (bar the voltages) the only difference between SD & MMC is that the MMC card does not have a 'write protect' sliding tab, whereas the SD cards do.
Joe Pinball
P.S. first post!
P.P.S. still waiting to get my Alpine!
Here is the data I've found from Kingston website:
<h3>SD</h3>
Secure Digital, introduced in late 2001, is a second-generation and more popular
derivative of the MultiMediaCard (MMC) standard (see section 7.4) that is backwardcompatible
with current MMC cards.
The Secure Digital format includes several important technological advancements over
MMC. These include the addition of cryptographic security protection for copyrighted
data/music and a 4X increase in data transfer rates. The SD Card Association sets the
specifications for Secure Digital cards.
To help support higher-capacity cards, SD cards are slightly thicker than the original
MMC cards. This means that devices designed to support SD cards may also accept
MMC cards (if the host device is not strictly limited to SD media for data security
reasons). However, devices exclusively designed for MMC cards will not support the
thicker SD cards at this time.
<h3>MMC</h3>
MultiMediaCards are one of the smallest Flash cards available, about the size of a
postage stamp. They were introduced in 1997 and initially used in the mobile phone
and pager markets. Today, they are commonly used in digital cameras, mobile phones,
and MP3 players. The MultiMediaCard Association sets the specifications for MMC.
Finally, the best option would be the SD card for the Expansion based on the speed.
thanks mate.
SD is MMC with data encryption (hence Secure Digital). Supposed to stop unauthorised copying, etc - but I don't think it's a defaulted feature, how else would you be able to read your own data when you swap cards between devices
SD has a much faster read/write rate than MMC, although the latest generation of MMC cards are faster than SD. However, they're also more expensive, and I'm not sure if they're full compatible with existing SD equipment (although MMC and SD are cross-compatible, so who knows... If you want to buy an MMC+ card and trial it, fine by me ).
Based purely on a weigh-up of cost vs. speed, SD is the more viable option at the moment.
According to the Kingston website, the MMC+ cards will work with the I-Mate PDA2.
It also states that the max size for any card is 1GB though???????
Who wants to put them straight?
wooww thank you very much indeed my friends.
now i really understand the difference.
this forum is ROCKZZZ !!!

Where do you recommend for tom tom?

Ive been thinking of getting tom tom for my xda2i, can anyone give me any advice on where to buy this with all the stuff that i need? I would like advice from anyone who has bought tom tom for their alpine and how much i would be looking to pay. Thanks in advance for help.
ArgyleMoss,
If you intend in getting TomTom for your XDA IIi, make sure that you get an MMC card and NOT an SD Card!
Lots of issues with TomTom locking up with SD cards (even Transcend 80X)
ArgyleMoss,
If you intend in getting TomTom for your XDA IIi, make sure that you get an MMC card and NOT an SD Card!
Lots of issues with TomTom locking up with SD cards (even Transcend 80X)
ok i'm gonna sound thick here but what is the difference between a mmc and sd card please
The size/shape of the MMC Card and the SD Card are identical.
Maximum transfer rates of SD are faster than that of MMC.
SD cards have a thicker casing and are more durable and resistant to electrostatic discharge.
SD includes a small switch on the side of the card that has two settings: Locked and Unlocked. If you set the card to the locked position, devices will not be able to write to the card, erase data from the card, etc.
Not sure, but the MMC may require less power to work and as a result work fine with XDA IIi (known issue with power to SD cards)
I bought a Kingston 2 GB sd ELITE PRO, and it seems to work just fine. I made some research and this specific model, it is an SLC (single layer cell) memory. These kind of memory need less power like MMC and they should work fine with tomtom.
I bought a Kingston 2 GB sd ELITE PRO, and it seems to work just fine. I made some research and this specific model, it is an SLC (single layer cell) memory. These kind of memory need less power like MMC and they should work fine with tomtom.
thanks for that about sd and mmc cards, but where do you recommend buying the tom tom kit for xda2i. thanks

Does a 4GB SD-Card work in Alpine??

Hey guys I`ve bought an Alpine and I want to put a 4GB SD Card in it??
Do you think, it works? Or is the maximium 2 GB, which works in Alpine?
CU
4 gb cards work......mostly.
I've used both the A-Data and the Transcend 4 GB cards on my Alpine. There is only one problem I've experienced. If your 4 GB card is less than half full (i.e. available storage is > 2gb), AND you've configured your camera to save the pictures you take to the SD card directly, then you may experience an error. The error simply says it can't save the SD card. If you card is more than 50% full of other stuff, then there is no problem using the camera application and saving your picutres directly to the SD Card.
I RARELY use my camera, so I really don't care. Plus, I have enough stuff on my SD card so that it never has more than 2 gb of available storage (i.e. its always more than half full). Consequently, this bug in the camera application is really not much of a nussiance.
ok, thank you very much for your reply...
It work, as I had a Kingston 4GB SD Card
without problems??
can you give me some more details about your sd card??
thank you
A 4Gb will work, but it does depend on the make - since, I'm guessing, cheaper makes use cheaper parts. Kingston and SanDisk seem to be pretty good.
I have a generic (samsung oem perhaps?) 4gb SD card and it works fine apart from it seems to be a tight fit in the slot. No problems with it as yet though.
SD card
I used a topram 4GB mini with adaptor and it did not work.
I then bought a Transcend 4GB MMC+ (plus) and it works like a dream.
I hope this helps you.
Watch out that the card is not a sdhc card. SDHC cards look like normally sd cards, but they dont' work on the Alpine.
pbohemien said:
Watch out that the card is not a sdhc card. SDHC cards look like normally sd cards, but they dont' work on the Alpine.
Click to expand...
Click to collapse
all sdhc (high capacity) cards have "sdhc" sign so you can easily discern them
only the newest htc devices support sdhc cards
I'm using 4GB Tanscend SD Card with my alpine
and its working fine
Thanks to the advice here, I bought a 4Gb Transcend MMC plus and it works beautifully.
So much space is a real bonus as I have Tomtom maps of Europe, the whole of the USA, 6 or 7 full movies plus 20 or so albums worth of mp3's still with 500mb free for odds & sods.
Hi,
I am using a HAMA 4GB, and it is working more or less fine.
I don't know if it is a card issue or caused by the heat recently in Austria, but my Nav freezes from time to time.
I have to turn the 2020i off and then on, then it works again.
Some days ago, the card suddenly lost some data....
I have a SanDisk 4GB SD Card, however when I put it into my Alpine it doen't seem to recognise it. It just doesn't show up. Can anyone give me any hints on how to force it to look for it or something like that?

SD Card

Could anybody tell me, why my new SD Card (Panasonic 2 GB Class 6) is much slower on my Alpine than my old SD Card (Panasonic 2 GB Class 2)? Here are the results from the SK Tools benchmark :
Class 2 Card: Read 6187 kb. Write 636 kb.
Class 6 Card: Read 729 kb. Write 481 kb.
Isn't it funny?
Perhaps I should format the SD Card properly?
Any ideas?
Thank you.
are cards empty when you check write speed?
class tells about writing speed on complitely empty cards
I tried both benchmarks, with the empty and the full card. The class 2 is much faster, especially in the write result. Unfortunally I formatted the new card on my device, with the effect that the card was become more slower. After that I formatted the card on my computer, now it's better, but nevertheless slower than the old one.
maybe it's something wrong with the card
the 2nd one is almost 10 times slower readed :/
did you check speeds on PC?
maybe PPC just can't handle with faster card
deezer said:
maybe it's something wrong with the card
the 2nd one is almost 10 times slower readed :/
did you check speeds on PC?
maybe PPC just can't handle with faster card
Click to expand...
Click to collapse
Well, that's my question. Where can I get the adequate information? How can I check the speeds?
use this
http://www.simplisoftware.com/Public/index.php?request=HdTach
Now I've found out that SD/SDHC Memory Card file systems formatted with generic operating system formatting software do not comply with the SD Memory Card specification. You need a special formatting program that complies with the SD Memory Card specification.
Because I have a Panasonic card, I took the Panasonic free SW (
link: http://panasonic.jp/support/global/cs/sd/download/sd_formatter.html).
The benchmark results are: Nearly 14000 KB/s (read), but still 470 KB/s (write) only.
No idea, how to increase the write performance.

[Q] MicroSD 16GB Class 10 write speed

Ok i finally bought micro sd card for my galaxy s. But a problem came up. When im transfering via USB Cable, transfer rate is barely 4mbit/s and when I put it in SDHC adapter and into my laptop card reader, i got transfer rate of 19mbit/s and read speed of 22mbit/s
My question is, can anyone explain to me why is it so slow over usb cable?
Just to mention, I already tested on mobile with mobile software and i got same results as with SDHC adapter and card reader....
Have you tried to put the USB-mode into Mass Storsge mode. Settings->Wireless and Network ->USB Settings ->Mass storage. This mode will only show the internal memory and the SD Card in Windows explorer. I think it is also much faster.
Yup, i tried only on that way tbh and transfer rate is still max 4mbps, and in sdcard 19.47
Weird thing is that i know that i got original card, its not scam, i ordered it from official supplier in my country...
bump anyone
I'm sure I read on a thread somewhere that the phone can't use the speed of a class
10 card and you don't get any faster speeds than a class 4, would like to know the facts on this
Sent using geek power
gsw5700 said:
I'm sure I read on a thread somewhere that the phone can't use the speed of a class
10 card and you don't get any faster speeds than a class 4, would like to know the facts on this
Click to expand...
Click to collapse
Get a free sdcard tester in the market and test it by yourself. I would be really surprised if a i9000 could do above class 6 even after tweaking readahead and buffers.
I tested it with SD Tools and got these results
Mine is meant to be a class 10, not very good result if it is:
I got this result with a Class 2 SanDisk:
View attachment 690542

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