In his Exynos, and therefore in the Galaxy S II (at least some models), Samsung no longer use the original GPU Imagination Tech. (Like the Hummingbird), but a GPU original ARM Mali-400 MP. This GPU is designed to be integrated in a SoC and combining Exynos so this 3D chip with two cores type Cortex A9, also from ARM.
The Mali-400 MP is a GPU that uses the tile rendering (such as PowerVR), a technology that divides the image into multiple smaller areas before rendering and has the great advantage not to make the record that the areas visible. The advantage of the solution is that the memory bandwidth required is low, a crucial point on the ARM SoC which generally share memory between the GPU and CPU on a bus only 32 or 64 bits.
According to ARM, a Mali-400 MP to 275 MHz is 30 million triangles / s and a 1.1 gigapixel fillrate / s, values quite close to those of the PowerVR SGX 540 of the older generation (20 million triangles / s and 1 gigapixel / sec at 200 MHz). In practice, the frequency of the Mali-400 MP is not yet known - ARM indicates between 240 and 395 MHz in 65 nm - and initial tests indicate the performance a little lower than the GeForce ULV Tegra 2. 
The Mali-400 MP is a GPU that uses the tile rendering (such as PowerVR), a technology that divides the image into multiple smaller areas before rendering and has the great advantage not to make the record that the areas visible. The advantage of the solution is that the memory bandwidth required is low, a crucial point on the ARM SoC which generally share memory between the GPU and CPU on a bus only 32 or 64 bits.
According to ARM, a Mali-400 MP to 275 MHz is 30 million triangles / s and a 1.1 gigapixel fillrate / s, values quite close to those of the PowerVR SGX 540 of the older generation (20 million triangles / s and 1 gigapixel / sec at 200 MHz). In practice, the frequency of the Mali-400 MP is not yet known - ARM indicates between 240 and 395 MHz in 65 nm - and initial tests indicate the performance a little lower than the GeForce ULV Tegra 2.
- ARM introduces Mali-T604 GPU for up to 5x greater performance over current Mali GPUs (10/11/2010)
- ARM intros next-gen Mali-T604 embedded GPU, Samsung first to get it (10/11/2010)
- ARM's latest Mali GPU announced (10/11/2010)
- ARM unveils powerful Mali GPU for smartphones and TVs (10/11/2010)
- ARM promises mobile phone graphics that won't stink (10/11/2010)
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