virtualbox.org

Even I increase by clicking on to the pointer and dragging it to 800 MB or so, after saving, at the end, it never get higher than 46 MB! Would you please help me with my problem?

My Laptop is DELL Inspiron N4030 Intel Pentium CPU P6200 2.13 GHz - 3GB RAM, 64 Bit,
ATI Mobility Radeon HD 5430



Graphics Card Manufacturer Powered by ATI
Graphics Chipset ATI Mobility Radeon HD 5430
Device ID 68E1
Vendor 1002

Subsystem ID 0466
Subsystem Vendor ID 1028

Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x16

BIOS Version 012.018.000.009
BIOS Part Number BR40158.001
BIOS Date 2011/03/04

Memory Size 512 MB
Memory Type DDR3

Core Clock in MHz 500 MHz
Memory Clock in MHz 800 MHz
Total Memory Bandwidth in GByte/s 12,8 GByte/s

Memory can only be change while the guest is shut down (not in saved state)

In any case... If you want to improve graphics performance then install the Guest Additions (in the guest). Increasing the VRAM setting beyond what is required will accomplish nothing. Simulated VRAM is just host RAM, so there is no performance advantage to having lots of simulated VRAM.