Quote:

BGA is also used for some mobile processors and most chipsets.

Yes, that too.

Here's a reference point for you: ball-grid has connections all over the chip, normal only on the outside. Some diagrams, with the red being the connection points:

Standard:

<pre> ___

<font color=red>*</font color=red>| |<font color=red>*</font color=red>

<font color=red>*</font color=red>| |<font color=red>*</font color=red>

<font color=red>*</font color=red>| |<font color=red>*</font color=red>

<font color=red>*</font color=red>| |<font color=red>*</font color=red>

<font color=red>*</font color=red>| |<font color=red>*</font color=red>

---

</pre><p>Ball-grid:

<pre> _ _ _ _ _ _

|<font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red>|

|<font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red>|

|<font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red>|

|<font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red>|

|<font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red><font color=red>*</font color=red>|

- - - - - -

</pre><p><font color=blue>Hi mom!</font color=blue>