3DMark 11 is the latest version of what probably is the most popular graphics card benchmark.

These will be the requirements:

3DMark 11 requires DirectX 11, a DirectX 11 compatible video card, and Windows Vista or Windows 7.
OS: Microsoft Windows Vista or Windows 7
Processor: 1.8GHz dual-core Intel or AMD CPU
Memory: 1 GB of system memory
Graphics: DirectX 11 compatible graphics card
Hard drive space1.5 GB
Audio Windows Vista / Windows 7 compatible sound card
There will be a free edition and the usual paid versions.

Graphics Test 1

Based on the Deep Sea scene
No tessellation
Heavy lighting with several shadow casting lights
Graphics Test 2

Based on the Deep Sea scene
Medium tessellation
Medium lighting with few shadow casting lights
Graphics Test 3

Based on the High Temple scene
Medium tessellation
One shadow casting light
Graphics Test 4

Based on the High Temple scene
Heavy tessellation
Many shadow casting lights
Physics Test

Rigid body physics simulation with a large number of objects
This test runs at a fixed resolution regardless of the chosen preset
Combined Test

Runs rigid body physics simulation on a moderate number of objects
Soft body physics using DirectCompute and the Bullet physics library running on the GPU
Medium tessellation
Medium lighting