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XMORE - Memory Cards FAQ

 

XMORE - Memory Cards FAQ

 

Xmore Industrial Memory Cards

Xmore is Glyn's own brand of memory cards and accessories, quality-tested from various manufacturers such as Toshiba and made available at very competitive prices.

Custom label option is also available at minimal cost.

FAQ
General Information Relating to Compatibility and Speed

FAQ

1. How long is the warranty period for my memory card?

Xmore memory cards come with a warranty of 2 years.


2. The storage capacity that is specified on the card is not the same as the actual available storage of the card.

With all memory cards, the storage capacity is somewhat lower than the specification on the card. The reason for this is that the card requires some memory for internal use, e.g. for information (formatting and spare sectors).

You can look up the actual available storage on the card by plugging the card into the computer or an external reader, selecting My Computer, then using the right mouse button to select the desired removable disk drive and clicking on Properties.


3. How much data fit in one card?

Whether 50 or 300 photos fit on a memory card in a digital camera will depend both on the storage capacity of the card and on the resolution of the camera, the file format and the selected compression.

Every digitized image is composed, mosaic-style, of individual image points (pixels). The resolution indicates the exact number of pixels. This means that a 1.3-megapixel camera records 1.3 million pixels per image, while a 3.3-megapixel camera records 3.3 million pixels. It is common to replace the total number of pixels with an indication of the number of vertical and horizontal pixels.

Examples: 3024 x 2016 pixels =6,100,000 pixels = 6.1 megapixels

Calculation example*

Max. image size Designation Approx. file size in TIFF format Approx. file size in JPEG format (standard resolution) Approx. number of images on 128Mb card (JPEG format)

Approx. number of images on 1 Gb card (JPEG format)

640 x 480 VGA-resolution 900 KB 120 KB 1064 8512
1280 x 960

1.3 Megapixel

4 MB 380 KB 336 2688
1600 x 1200

2.1 Megapixel

6 MB 550 KB 232 1856
2048 x 1536

3.3 Megapixel

9 MB 1.2 MB 104 832
2240 x 1680

4 Megapixel

11 MB 1.5 MB 80 640
2560 x 1920

5.1 Megapixel

14 MB 1.7 MB 72 576
3024 x 2016

6.1 Megapixel

18 MB 2.2 MB 56 448

*Average values based on manufacturer information


4.  My card doesn’t work with a certain digital camera. Why?


Our card is compliant with a specification issued by each card association such as SD Card Association or CompactFlash Association.  Therefore our card should work with the electronic equipments which satisfy the specification.  However some problems may still be experienced.  One of the major reasons is card formatting (see Q&A #5).  We recommend you format the card with the camera before using the card.  Please note that the format operation will erase all contents of the card.


5.  I have tried a benchmark test on an Xmore card card with my PC, but I cannot get the same result as the specification mentioned on the Card blister.

The Performance of a card depends on several factors such as performance of the PC, interface between PC and the card, file system’s overheads, size of data transferred and so on.  On the other hand our specification is defined as a case with ideal conditions.  Therefore your benchmark result might be different from the specification.
 

6.  A card formatted by a PC doesn’t work with a digital camera. Why?

There are several types of file format. For example when Windows XP formats a card, FAT32 file system is chosen as the default but some digital cameras might not support the FAT32 file system. Therefore we recommend that you format a card with the digital camera before using the card with the camera.  Please check the user’s manual or ask the manufacturer of the camera how to format the card with the camera.

7.  What is the advantage of using your high performance series?

As shown in the specification, our high performance series has a higher speed write operation compared with the standard series. However, the difference might appear small in some digital cameras because the overheads of the camera, such as compression of a picture might be rather large. On the other hand the difference will be greater for high-end digital cameras with high resolution, especially with a continuous shooting function.
 

8.  Can I use an SD card instead of an MMC card, and vice versa?

In some electronic equipment which have SD card slots, MMC cards can be accepted.  However SD cards cannot be used with electronic equipment which support only MMC cards, because an SD card is thicker than an MMC card even though other dimensions are same.  Please check with the manufacturer of the equipment.
 

General Information Relating to Compatibility and Speed

Basically, each memory card offers several access options, and every camera uses a specific option within the scope defined by the specification. The memory cards also work at different speeds in the different operating modes.

This has the consequence that a specific card works at different speeds with different cameras (of course, this also applies for a specific camera in conjunction with different memory cards).

Consequently, a camera manufacturer will originally equip its product with a memory card that offers an excellent “interaction”.

Therefore, we recommend our customers to buy and test the memory card at a specialized dealer, since it is impossible to predict the exact performance.

Our experience has shown that our memory cards work perfectly with the vast majority of commercially available cameras also in terms of speed (most cameras are currently not faster). But of course we cannot know every single camera.