This MSI graphics card is one option for you if you're upgrading your computer. The memory of the card amounts to 2 GB and is of the DDR3 type.
From Ecprof
N730K2GD3LP - GPU NV N730K 2GB DDR3 LPV1 Fan
Clove Technology
MSI NVIDIA GeForce GT 730 2 GB GDDR3 Graphics Card