Monday, June 6, 2011

OMAP 4470: response Tegra 2 and Apple A5

Texas Instrument, very present in the SoC ARM, today announced a new version of its chip OMAP4. We had already introduced the 4440 version of the chip a few months ago, but needed a little reminder before moving to the new version, 4470. The OMAP4440, used for example by RIM in its tablet, is a SoC (System on a Chip, a chip that integrates all components) that contains two CPU type Cortex A9 (with NEON), a DSP and CPU help PowerVR GPU type SGX540 clocked at 304 MHz.

Compatible with HDMI, the OMAP4440 uses memory LPDDR2 on 2x32-bit and reached a frequency of 1 GHz. The new version, the 4470, still uses two Cortex A9, but the frequency is 1.8 GHz. The CSP is replaced by classical two Cortex M3 processor input range that consume very little, perfect for performing simple tasks in the background.

The GPU is still a PowerVR, but a new version of the chip, a SGX544. This version is very close to the iPad SGX543 2, but brings DirectX 9.0 compatibility. While Apple uses a version MP2 (two cores), Texas Instrument is limited to one. The company announces 2.5 times the performance: the SGX544 is about twice as fast as SGX540 and the frequency changes from 304 MHz to 384 MHz.

The memory is a priori two-channel 32-bit, but LPDDR2 can reach 466 MHz. Finally, small innovation, Texas Instruments has built a dedicated chip for accelerating content in 2 dimensions, to unload the GPU. Overall, the chip is cut out for Windows 8, compatibility with DirectX and frequencies which indicate that the chip is designed for tablets.

Remains to be seen the response from NVIDIA: Kal-El (Tegra 3) should propose Cortex A9 4 cores but does not yet know the performance of the graphics. Apple's side and A5, the approach is different: the processor part is lower, but the graphics are much faster.

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