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Answer to: What is the GPU? Is it SGX535 or rumored SGX545?Monteiro2008 Iphone4 use SGX545, and this GPU graphics boost over the current SGX535 in the iPhone 3GS: up from 28 million polygons per second to 40 million in SGX545. This Gpu run: DirectX10.1 API support Enhanced support for DirectX10 Geometry Shaders DirectX10 Data assembler support (Vertex, primitive and instance ID generation) Render target resource array support Full arbitrary non power of two texture support Full filtering support for F16 texture types Support for all DirectX10 mandated texture formats Sampling from unresolved MSAA surfaces Support for Gamma on output pixels Order dependent coverage based AA (anti-aliased lines) Enhanced line rasterisation SGX545 was also designed to deliver full profile OpenCL 1.0 capabilities, with advanced features including: Support of round-to-nearest for floating-point math Full 32-bit integer support (includes add, multiply and divide) 64-bit integer emulation 3D texture support Support for the maximum 2D and 3D image sizes specified in the full profile. Inside ...