While few people seem to care about processors speeds on the desktop, it's a hot topic when it comes to mobile processors, and Nvidia has just raised the stakes with its new Tegra 4 processor.
The Tegra 4 has at its heart 72 custom Nvidia GeForce GPU cores, giving it six-times the graphics processing power of the current Tegra 3. Backing up the GPU is a new quad-core variant of ARM's Cortex-A15 CPU, a chip that Nvidia claims "delivers 2.6x faster Web browsing and breakthrough performance for apps."
According to AnandTech, the Tegra 4 processor will have six-times the arithmetic logic units (ALUs) that are present in the Tegra 3. If it is assumed that the Tegra 4 GPU cores will operate at 520 MHz -- which is the fastest that the Tegra 3 could go -- this means that the GPU will be capable of 74.8 GFLOPS (billion FLoating-point Operations Per Second) compared to the 71.6 GFLOPS that the PowerVR SGX 554MP4 inside Apple's A6X.
At CES 2013 Nvidia made the assertion that the Tegra 4 will be faster than the A6X both in 3D games and in GLBenchmark, but didn't provide further details on the matter.
This week, GLBenchmark results claiming to show Tegra 4 performance were leaked to the Web, but it appears that these are either fake or relate to prototype versions of the Tegra 4 running at much lower clock speeds.
While this seems to give Nvidia an advantage over Apple, the glory could be short-lived. Imagination Technologies, makers of the PowerVR GPU inside many smartphones and tablets -- including the iPhone and iPad -- have announced that its sixth-generation graphics core can deliver "20x or more" the performance of current-generation hardware while at the same time being five times more efficient.
Things are really starting to heat up in the mobile sector. - source
1 comments:
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