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Radeon HD 4250 (IGP) is an integrated GPU on the AMD 880G Chipset.
It's based on the RS880 Core and offers 40 Shader Processing Units, 4 TMUs and 4 ROPs a 32-bit memory interface of either DDR2 (more commonly) or DDR3. The central unit runs, commonly, at up to 560MHz and the memory clock's operating speed depends on the system RAM's speed.
Radeon HD 4250's performance depends on the users system configuration which will define the operating memory clock's speed and on the desktop manufacturer which decides its central unit's speed.
Therefore, Radeon HD 4250 may offer similar performance to Radeon HD 4290 (and even Radeon HD 4200) but never close to the dedicated Radeon HD 4350. DirectX 11 games aren't supported.