OK. So you're saying it's faster, but what about graphics?
FSX's minimum system requirement for graphics is:
Video Card: 32MB DirectX 9 compatible
The ATI Radeon 3000 graphics on the BIOSTAR A780L3B, the GeForce 7025 on the Asrock N68-VS3 FX or the Intel HD Graphics (Pentium G). All meet the minimum requirements. But you would not consider any of them a 'gaming graphics' solution. You will be unhappy using any of those and to running FSX.Graphics Card Hierarchy Chart
source: THG: Best Graphics Cards For The Money: April 2012