Quadcore Battle
Basic introduction .
Exynos4412 by Samsung uses 4 cortex a9 cores and features Mali 400mp4 quad-core gpu by arm.
Tegra3 by Nvidia features 4 cortex a9 cores and 12 core ultra low power geforce GPU.
Alwinner a31 by all-winner technology China features 4 cortex a7 cores and dual core power vr sgx544mp GPU.
Mediatek MTK series chipsets by Mediatec inc China features quad-core cortex a7 CPU and a quad-core overclocked Power vr sgx544mp GPU.
Actions ATM7029 by actions semiconductors featuring quadcore cortex a5 and vivante GC1000 GPU.
Rockchip RK3188 by Rockchip semiconductors China featuring quadcore cortex a9 cpu and quad core overclocked mali300mp4 GPU.
Freescale imx6Quad by Freescale featuring quadcore cortex a9 CPU and vivante GC2000 GPU.
Comparison: Cortex-A7 and Cortex-A9
In 2011, Cortex-A7 was introduced by ARM, and that is four years after Cortex-A9. When compared with Cortex-A9, Cortex-A7 design does have some improvements, as listed on ARM official website:- Lower L2 latencies (10 cycles)
- Improved OS support for L2 maintenance due to simplified software control
- Designed with a low power approach
- Improved branch prediction
- Improved memory system performance
- 64b Load Store path, improves integer and NEON performance
- 128b AMBA 4 buses improve bandwidth
- Increased TLB size (256 entry, up from 128 entry for Cortex-A9 and Cortex A5)
- Increased performance for large workloads like web browsing
- Seamlessly compatible with Cortex-A15 (big.LITTLE)
From the above one can infer ranking as follows
1.Rockchip RK3188
2.Exynos 4412
3.Allwinner A31
4.Nvidia Tegra3
5.Freescale iMX6 Quad
6.Mediatek MT6589
7.Actions ATM7029
If you want to buy a cheap quadcore tablet I recommend Exynos or rockchip but not Alwinner. Though Alwinner has a better GPU performance it's cpu performance is pretty weak due to low clock-speed also its 40nm manufacturing process contributes to weak performance.
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