GeForce GTS 250M is a fast-middle-class GPU based on the second shader unified architecture.
It's based on the GT 215 Core and offers 96 Shader Processing Units, 32 TMUs and 8 ROPs on a 128-bit memory interface of fast GDDR5, although DDR3 is also supported. The central unit runs at 500MHz and the memory clock operates at up to 800MHz.
Despite featuring a 500MHz central unit, most GT 250M variants were underclocked (450MHz vs 500MHz).
Today's modern demanding games can be played at medium settings smoothly, using a 720p resolution. Beware that DirectX 11 games aren't supported.