Continue with the ARM chip for smartphones with a company unknown to the general public, but very present in the entry-level devices: Rockchip. The ARM SoC society have in fact two "advantages": they are inexpensive and attractive frequencies. In practice, there are mainly ARM SoC Rockchip in entry-level devices like the Archos 7 Home Tablet, or in (bad) copies iPad, sold under the names IPED ePad or on eBay.
The CPU is very slow and few features, but the price very low and the frequency up to 1 GHz are good selling points. There are two SOC Rockchip quite frequently: the RK2808 (A) and RK2818. In both cases, these are type ARM9 cores that are used in architecture ARMv5. The former can achieve about 600 MHz, the second is extensive in some cases to 1 GHz.
Even at this frequency, the performance is quite low: an ARM9 is able to reach 1.1% by DMIPS Hz where a Cortex A8 reached almost double (2 DMIPS per MHz). In practice, Android is available on this type of processors, but future versions of the system should remove the support of ARMv5 and some programs, like Flash, need a CPU type ARMv7.
Outside a chip for video decoding, which supports H.264 720p, RK2808 has no advanced video features. He has only one video chip can work in 2D and OpenGL ES is not the game. The RK2818, meanwhile, has a GPU, a Mali-55. The original ARM chip is very slow: it only supports OpenGL ES 1.1 and calculates only 1 million triangles / s, with a fillrate only 100 megapixels / s.
In practice, the performance is about 10 times lower than on a PowerVR chip SGX535 quite common. The chips are Rockchip input range and capabilities are limited. The RK2808 supports HDMI (720p), reads SDHC cards are compatible USB 2.0 (host) and can handle 1 GB of Mobile SDRAM. The bus is not indicated, but it is a priori a classic 32-bit.
The RK2818 has the same functions but supports up to 4 GB of DDR2-LP. There is little information on the depth of Rockchip, but it is a priori TSMC. The future, in Rockchip, the RK2918. Introduced at CES, this SoC combines a core Cortex A8 type with a high frequency (1.2 GHz), a powerful GPU - 60 million triangles / sec - and features advanced 1080p, as the decoding of WebM Google.
Remains to be seen when it is actually available: if it comes out too late, it will be overtaken by competition SoC Cortex A9. 
The CPU is very slow and few features, but the price very low and the frequency up to 1 GHz are good selling points. There are two SOC Rockchip quite frequently: the RK2808 (A) and RK2818. In both cases, these are type ARM9 cores that are used in architecture ARMv5. The former can achieve about 600 MHz, the second is extensive in some cases to 1 GHz.
Even at this frequency, the performance is quite low: an ARM9 is able to reach 1.1% by DMIPS Hz where a Cortex A8 reached almost double (2 DMIPS per MHz). In practice, Android is available on this type of processors, but future versions of the system should remove the support of ARMv5 and some programs, like Flash, need a CPU type ARMv7.
Outside a chip for video decoding, which supports H.264 720p, RK2808 has no advanced video features. He has only one video chip can work in 2D and OpenGL ES is not the game. The RK2818, meanwhile, has a GPU, a Mali-55. The original ARM chip is very slow: it only supports OpenGL ES 1.1 and calculates only 1 million triangles / s, with a fillrate only 100 megapixels / s.
In practice, the performance is about 10 times lower than on a PowerVR chip SGX535 quite common. The chips are Rockchip input range and capabilities are limited. The RK2808 supports HDMI (720p), reads SDHC cards are compatible USB 2.0 (host) and can handle 1 GB of Mobile SDRAM. The bus is not indicated, but it is a priori a classic 32-bit.
The RK2818 has the same functions but supports up to 4 GB of DDR2-LP. There is little information on the depth of Rockchip, but it is a priori TSMC. The future, in Rockchip, the RK2918. Introduced at CES, this SoC combines a core Cortex A8 type with a high frequency (1.2 GHz), a powerful GPU - 60 million triangles / sec - and features advanced 1080p, as the decoding of WebM Google.
Remains to be seen when it is actually available: if it comes out too late, it will be overtaken by competition SoC Cortex A9.
- Rockchip RK2818 and RK29 demonstrated and explained (27/12/2010)
- Ramos W15 Android tablet packs Rockchip RK2918 Cortex-A8 SoC (31/12/2010)
- Rockchip presents RK2818 and RK29xx series Processors at CES 2011 (07/01/2011)
- Archos 101 Home Tablet at CES 2011 (07/01/2011)
- Archos 101 Home Tablet, possibly cheapest 10″ capacitive ARM Cortex-A8 tablet (07/01/2011)
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