System RAM running at 1333MHz is common, but our test unit will be running a bit faster with RAM clocked at 1600MHz. Since the GPU has no dedicated VRAM, it must operate in accordance with the main memory and its RAM clock. Still, the performance of the HD 4000 is dependent on several other factors. With the jump HD 4000, Intel is planning to mitigate this shortcoming to some extent by upgrading the video decoder ( MFX), increasing the number of execution units from 12 to 16 and adding support for DirectX 11 Shader Model 5.0. 3D games or programs, however, will put the integrated GPU to a grinding halt. The Sandy Bridge GPU is quick enough for most everyday tasks including Internet, HD video playback. Whether it's an office notebook or budget offering, the current HD 3000 graphics can be found throughout the entire spectrum.
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