It has to do with their standards and the amount of data the can send. B - Slowest, about 11 MB/Sec. G - Average, about 54 MB/Sec. N - Fastest, about 130 MB/Sec. Some claim to get speeds of 270+ though.

0.14 is a number.

If you give a unit of measure (mb/sec, gb/sec) it can be determined.

132 Mb/sec

3:11 sec.

The PS2 has 32 MB of RDRAM @ 3.2 gigabytes /sec.

Also note the following:

4 MB DRAM video memory @ 48 gigabytes /sec.

2 MB I/O memory

16 KB cache memory

2 MB sound memory