There is this laptop, Lenovo IdeaPad 320 15ABR AMD A12-9720P, 8GB RAM, 1TB HDD, Windows 10 and AMD Radeon 7.
www.cnet.com
The problem is that the specifications doesn't show how much memory the GPU has. I've seen in other websites that the type of memory is shared.
What does that mean. ?

Lenovo IdeaPad 320-15ABR - 15.6" - A12 9720P - 8 GB RAM - 1 TB HDD - US Specs & Prices
Lenovo IdeaPad 320-15ABR - 15.6" - A12 9720P - 8 GB RAM - 1 TB HDD - US overview and full product specs on CNET.

The problem is that the specifications doesn't show how much memory the GPU has. I've seen in other websites that the type of memory is shared.
What does that mean. ?