I just tested an Nvidia 9300 GS card with a Intel Corei3 HD 2000 graphics system. Here is the windows experience index scores I got :

Nvidia 9300 GS : Base Score 3.9

• Processor : 7.1
• Memory : 7.5
• Graphics : 3.9
• Gaming Graphics : 5.1
• Hard Disk : 5.9

Intel HD 2000 : Base Score : 5.2

• Processor : 7.1
• Memory : 5.9
• Graphics : 5.2
• Gaming Graphics : 5.8
• Hard Disk : 5.9

My questions are :

When using Intel HD graphics, it reduces the score of my Ram! How is that possible? It checks the speed of the ram. Not the size (i think). Intel graphics take some of the ram space but how can that effect the speed?

From both of them, what will be the good choice?