The newest released PS3s have 320 GB and 160 GB replacing the 120 GB and 250 GB slim models
20 gb and 60 GB were the 2 models that were first released. The 20 GB model did not have WiFi and was $100 less to purchase
1024
There are 1024 megabites in 1 gigabite. 20 gigabites has 20,480 megabites.
It depends on how many gigabites it has like 8 gigabites can hold about 15 movies.
None
5500
4500
4,000,000,000
100
a half
1.306728 gb
A lot.