T Intel HD graphics

Currently the best integrated Intel graphics core is the Intel HD 3000. This graphics core is in all laptop Sandy Bridge Core i3/i5/i7 CPUs, but only in the Core i5-2500K and Core i7-2600k desktop CPUs.

The Intel HD 3000 is slightly better than the Radeon HD 5450, but is slower than the nVidia GT 220. See following benchmarks to get a rough idea of performance.

http://www.techpowerup.com/reviews/HIS/HD_5450_1_GB/6.html

If you have the older Intel GMA X4500M graphics core then that would be about half the performance of the Radeon HD 5450.