I have a Dell Latitude E6500 with Ubuntu 12.04 LTS and after a fresh reinstall, I notice some sluggishness, which is probably due to the video drivers. My graphics card is a NVIDIA Quadro NVS 160M. When I open Additional Drivers, there are various options but I don't know which is the best one. Many thanks.
This is what I get with sudo lshw -c video
*-display
description: VGA compatible controller
product: G98M [Quadro NVS 160M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:16 memory:f5000000-f5ffffff memory:e0000000-efffffff memory:f2000000-f3ffffff ioport:df00(size=128) memory:f4000000-f401ffff