Quad core Nvidia Kal-El (Tegra 3) vs Nvidia Tegra 2 | Tegra 2 vs Tegra 3 Speed, Performance and Multitasking
Tegra™2是一个片上系统（SOC），由NVIDIA开发，用于智能手机，个人数字助手和移动互联网设备等移动设备。NVIDIA声称Tegra 2是第一个移动双核CPU，因此具有极端的多任务功能。NVIDIA KAL-EL（Tegra 3）是第一个四核SoC。NVIDIA于2011年2月在巴塞罗那举行的世界移动大会活动中宣布了这一点，该活动旨在在2011年下半年发布。
Nvidia Tegra 2
As mentioned above, Tegra 2 is a SoC, developed by Nvidia for mobile devices such as smart phones, personal digital assistants, and mobile Internet devices. According to Nvidia, Tegra 2 is the 1st mobile dual-core CPU that has tremendous multitasking capabilities. Due to this, they claim that it can deliver 2x faster browsing, H/W accelerated Flash and highest quality gaming (on par with console-quality) with the NVIDIA® GeForce® GPU. Key features of Tegra 2 are Dual-core ARM Cortex-A9 CPU that is the 1st mobile CPU with out-of-order execution. This yields faster web browsing, very fast response time and overall better performance. Another key feature is the Ultra-low power (ULP) GeForce GPU, which delivers exceptional mobile 3D game playability along with a visually appealing 3D user interface which yields high-speed response and very low power consumption. Tegra 2 also allows watching 1080p HD movies stored on a mobile device on a HDTV with very low power consumption through its 1080p Video Playback Processor.
Quad core Nvidia Kal-El (Tegra 3)
As mentioned earlier, Kal-El (Tegra 3) is the newest quad-core SoC developed by Nvidia, which is expected to be released in the second half of 2011. Tegra 3 T30 is targeted for tablets, while Tegra 3 AP30 is targeted for phones. Nvidia claims that, Tegra 3 T30 contains four 1.5GHz ARM Cortex A9 cores and provides support for Blu-ray video. They also claim that it is capable of driving a 1920 x 1200 panel with three times faster graphics and with a Ultra Low Power (ULP) mode, where a typical Tegra 3 tablet will be able to manage 12 hours of HD video playback. Tegra 3 AP30, which is targeting phones, is capable of driving 1366 x 768 resolution displays. As mentioned by Engadget, Nvidia has demonstrated a device containing the Tegra 3 SoC scaling down a 2560 x 1440 video stream to its 1366 x 768 native resolution, while outputting the same stream at 2560 x 1600 on a 30 inch monitor simultaneously.
What is the difference between Quad core Nvidia Kal-El (Tegra 3) and Nvidia Tegra 2?
Tegra 2和Tegra 3之间的主要区别是它们所包含的核心数。尽管Tegra 2是双核SoC，而Tegra 3是四核SoC。NVIDIA声称，Tegra 3通过将处理能力加倍并使图形处理能力增加一倍，从而优于Tegra 2。此外，NVIDIA展示了一个大战中世纪的实例，在Tegra 3和Tegra 2中以650敌人的身份以720p的速度运行，而Tegra 2在这次演示期间却结结巴巴，但Tegra 3的表现非常出色。同样，在使用Coremark 1.0基准测试的基准测试中，Tegra 3的得分是Tegra 2的两倍以上。
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