4-PLUS-1
Latest
NVIDIA officially unveils Tegra 4: offers quad-core Cortex A15, 72 GPU cores, LTE support
One new SoC per year? That's what NVIDIA pledged back in the fall of 2010 and today at its CES 2013 presser, it delivered with the Tegra 4's official unveiling. The chip, which retains the same 4-plus-1 arrangement of its predecessor, arrives with a whopping 72 GeForce GPU cores -- effectively offering six times the Tegra 3's visual output and is based on the 28nm process. It also is the first quad-core processor with Cortex A15 cores on-board, and offers compatibility with LTE networks through an optional chip. NVIDIA claims this piece of silicon is the world's fastest mobile processor, and showed a demonstration in which a Tegra 4 went head-to-head against a Nexus 10 in loading websites (you can guess which one won). The Tegra 4 also introduces new computational photography architecture, which adds a new engine to drive the image processing and significantly improve the amount of time it takes to calculate the necessary mathematics 10 times faster than current platforms. To show off its power, NVIDIA demonstrated HDR rendering on live video. The chip is also capable of implementing HDR in burst shots and with LED flash. The idea, NVIDIA says, is to eventually make our mobile cameras more powerful than DSLRs, and this is certainly a step in the right direction.
NVIDIA Tegra 4 processor details leaked: 4-plus-1 cores, 28nm, six times the power of Tegra 3
NVIDIA's next superhero-themed mobile chipset has possibly made an early appearance in a leaked side in China, and it looks like it wants to go toe-to-toe with the latest processors from Samsung and Qualcomm. The Tegra 4 (codenamed Wayne) will apparently offer the same power-efficient 28nm process found on its Snapdragon rival and according to the slide from Chip Hell, there's a dizzying 72-core graphics setup. That's six times as many GPU cores as Tegra 3 -- the processor found in the Nexus 7, for example -- and the increase is claimed to result in six times the overall visual performance. Those graphics cores will be able to feed displays of up to 2,560 x 1600, with 1080p output at 120Hz, while the leak also mentions 4K -- if only in passing. There's no increase in CPU cores this time, with the same 4-plus-1 setup , but we are seeing its move to ARM's latest design, the Cortex-A15. Tegra 4 will apparently also catch up with USB 3.0, being NVIDIA's first mobile chip to do so, alongside dual-channel DDR3L memory. We've reached out to chipmaker and we'll let you know when we hear more, but it's highly likely we'll be welcoming this next-generation processor early next year -- say, at a certain mobile trade show.
NVIDIA officially brands Tegra 3's five-core quad-core architecture as 4-PLUS-1
NVIDIA's cooked up a few ways to describe the Tegra 3's quad-core-with-a-spare architecture, usually by giving the extra Cortex A9 a cute nickname like "ninja," or "companion." Until now, the proper description was "Variable Symmetrical Multiprocessing," or, vSMP for short. Despite how much fun (and technically accurate) some of these descriptions may have been, however, they just aren't marketable. "Our customers wanted a name for it that's unique and descriptive," writes mobile business unit general manager Michael Rayfield, "A name they could put on a box or a store sign that immediately represents its value." That official name is the 4-PLUS-1 quad-core architecture, he says, and you'll probably see it pop up a few times in Barcelona next week if LG's latest offering is any indication. It lacks something in pizzaz, to be sure, but we'll admit that it is at least descriptive of the Tegra 3's technical chops. In related news, NVIDIA promises the Tegra will be less fickle about its new moniker than the symbol formerly known as the artist formerly known as Prince.
