8Gb vs 16Gb vs 32Gb vs 64Gb Ipod Touch Comparison (1G 2G 3G)
Okay , so you are looking to purchase an Ipod Touch , player and want choose the right storage size , or you already own your own an 8Gb,32 or 16Gb Ipod Touch and want to know how many songs 8Gb can hold.Anywhere you look to buy an iPod ,they will tell you 8Gb 16Gb 32Gb or 64Gb, but how much video and audio are we talking here.
Well first of all with addressing overheads , indexing etc actual storage space is more like 7.95Gb 15Gb and 29Gb respectively .Generally speaking , the number of songs which can be stored on your device depends on the filesize of each song.No two songs are the same size usually , a number of factors can affect this. The two main factors affecting the size of an audio file arequality( Bitrate and bitdepth) and time ( how long the song is). Therefore to predict the number of songs your 8,32 or 16Gb Ipod Touch can hold , a few assumptions will be made based on the average user's mp3 listening practice. Here we will assume each song is Cd quality (44.1KHz sample rate) 128Kbps bitrate and 4 minutes long i.e 3.75Mb per song.
Please note that the actual number of songs your 16Gb Ipod Touch 2g for example can hold will most likely not be exactly 4,240 mp3's but some value around there if you represent a more or less average listener. Video is a lot more complex than audio. This article will not try treat with the technical parameters of digital video but rather to present video storage simply in terms the average person can understand. |
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There are a few more factors which would cause the filesize of the video to vary widely in comparison to audio . Most important are the framerateand resolution. The framerate represents how fast the video refreshes i.e how many still images make up a second of video. The resolution describes the pixel area the video is formatted to fit. A computer screen has a much larger viewable surface area than an Ipod Touch and hence a greater resolution is needed to show the same video clearly. More or less ANY video you can put on an ipod will look good if it was formatted for a pc which has a much larger screen and needs much higher resolution. Typically you can get a DVD movie at 700mb when you download it. This gives
- On an 8Gb drive you could store about 10 movies
- On a 16Gb drive you could store about 21 movies
- On a 32Gb drive you could store about 44movies
You can compress the movie down to a much smaller filesize and it will still look good on the small screen , allowing you to cram many more movies in there. Apple claims the Ipod Touch can hold up to 10 hours , 20 hours or 40 hours of video with the right factors.Their claim is based on H.264 1.5-Mbps video at 640-by-480 resolution combined with 128-Kbps audio.
Find out why the latest 3G Generation is recommended above previous models by reading this article. Below is the Apple comparison chart for features and pricing of the latest model 3G iTouch as . You'll notice that their figures differ slightly from ours on terms of number of songs etc due to the above stated considerations.
Be sure to check out this article on how to choose Ipod Touch 2g(generation) or 1g and where to buy them cheapest .Check out here for Best Deals on the Internet on ALL IPOD MODELS.