The only difference is the 160gb has more memory but it costs more. I reccomend you get 120 gb as its cheaper and trust me ive got a 80gb the original ps3 you hardly use up any memory unless you download games from playstation store. So if youre going to download most your games get the 160gb, if not get 120gb.

the 320 gb has double the memory than the160gb, meaning you can store a lot more on the memory

Standard cast iron has microscopic free graphite in flakes. SG stands for spheroidal graphitic iron where the flakes are converted by the manufacturing process into microscopic spheres which strengthens the cast iron

simply the amount of memory you can download or play games with

There is no difference between one and the other. They are exactly the same, they are the same model, have the same features and characteristics and one is no better or worse than the other. The only difference is the country where they are sold, or the area code. The last digit is just there to represent the country where the model can be commercialized; this is due to some games copyright issues because some games can be sold in a few countries and cannot be sold in other countries so, the number is just there to point a geographical difference, not a technical one. Vera Oak 555863

The last digit is simply the region where the PSP was sold, not an improvement. 0: Japan, Region 2 1: North America, Region 1 2: Australia/New Zealand, Region 4 3: UK, Region 2 4: EU. Region 2 5: Korea, Region 5 6: Hong Kong/Singapore, Region 3 7: Taiwan, Region 3 8: Russia, Region 5 9: China, Region 6 This is a measure they take against importing games and modding consoles. Thomas Norrington

there is a lot of difference between the pspgo and the psp3000 as follows 1.. the psp3000 is the old version but the pspgo is the latest version of psp series 2..the psp go has the bluetooth functionality but the psp3000 dont have this 3.. psp3000 can be hacked but the pspgo cannot be hacked

320GB - 120GB = 200GB

You can call and see psp a portable version of ps3.

You can easily tell the difference between the psp as follows... 1.. there are 4 types of the psps or 4 versions of the psp. first is the psp 1000, second is the psp 2000, third is psp 3000 or 3004 and the last one is the psp go. the serial number under the console shows their versions.