Memory Sizes and Song Capacities
Song lengths vary. The number of songs you can store on you iPod / MP3 Players will also vary. The calculations are based on the following:
About 1 minute per MB, so 1 GB would be 1000 minutes.
At 4 min per song: 1000 / 4 = 250 songs per GB.
At 3 min per song: 1000 / 3 = 333 songs per GB.
At 2 min per song: 1000 / 2 = 500 songs per GB.
2GB iPod / MP3 Player will hold approximately: 500 to 1,000 songs.
4GB iPod / MP3 Player will hold approximately: 1,000 to 2,000 songs.
8GB iPod / MP3 Player will hold approximately: 2,000 to 4,000 songs.
16GB iPod / MP3 Player will hold approximately: 4,000 to 8,000 songs
32GB iPod / MP3 Player will hold approximately: 8,000 to 16,000 songs
64GB iPod / MP3 Player will hold approximately: 16,000 to 32,000 songs
80GB iPod / MP3 Player will hold approximately: 20,000 to 40,000 songs
160GB iPod / MP3 Player will hold approximately: 40,000 to 80,000 songs
Memory Sizes and Picture Capacities
1. Photos with predominantly green colours tend to be larger than photos that are predominantly red or blue. I'm not sure why this is.
2. Colour photos, in general, tend to be larger than black and white photos, simply because there is more data to be stored for Colour.
3. Photos with more fine detail tend to be larger than photos with larger expanses of solid colour or texture. For example, a photo of a smooth, made up model's face would probably be significantly smaller than one showing the minute details of an elderly person's wrinkled face.
Megapixel (MP) count refers to the maximum resolution of the camera's sensor -- its ability to record detail. In most of the newer cameras you can set the Resolution to something as low as 1.3 Mega Pixels and up. A pixel is a single picture element, and a megapixel is a million pixels. The following table is only a ruff guesstimate. Your results may, and probably will, vary because of the above stated details.
Card Resolution / Mega Pixels - Number
Capacity 1.3 MP 3.0 MP 5.0 MP 8.0 MP 10 MP 12 MP
16MB 20 10 9 5 2 2
32MB 50 25 17 10 5 4
128MB 300 150 120 80 55 32
256MB 600 300 240 160 110 71
512MB 1200 600 480 320 225 121
1GB 2400 1200 950 600 400 260
2GB 4800 2400 1900 1200 800 500
4GB 8000 4000 3000 2000 1500 1000
8GB 15700 7800 5900 3800 2900 1900
16GB and Higher values are left for your extrapolation skills ….
SD - Secure Digital
SDIO - Secure Digital Input Output
SDHC - Secure Digital High Capacity – Storage capacities in excess of 2 GB,
with minimum sustained read and write speed of 17.6 Mbit/s
SDXC - Secure Digital eXtended Capacity - Supports cards up to 2 TB in size and with
speeds up to 300 MB/s.
"Standard" SD cards max out at 2GB capacity, based on their classification and the controller used by SD-only devices. Most SD cards you'll find today are technically SDHC, with capacities between 4GB and 32GB. The largest class is SDXC, or Secure Digital Extended Capacity, can range from 64GB to 2TB.
SD (SDSC), SDHC, SDXC, SDIO
32.0×24.0×2.1 mm (1.260×0.945×0.083 in)
32.0×24.0×1.4 mm (1.260×0.945×0.055 in)
(as thin as MMC) for Thin SD (rare)
miniSD, miniSDHC, miniSDIO
21.5×20.0×1.4 mm (0.846×0.787×0.055 in)
The micro form factor is the smallest SD card format.
microSD, microSDHC, microSDXC
15.0×11.0×1.0 mm (0.591×0.433×0.039 in)