Subject: General Tech | January 6, 2014 - 02:08 PM | Jeremy Hellstrom
Tagged: tegra k1, tegra, SoC, nvidia, kepler, k1, cortex a15, CES, arm, A15
Project X Logan K1 is the first big news out of CES from NVIDIA and represents a bit of a change from what we were expecting. The current belief was that the SoC would have four 28nm Cortex A15 processors but that will only be one flavour of K1, a Denver based dual core version will also be released. Those ARMv8 64-bit processors will natively handle 64 bit applications while the A15 version that The Tech Report had taken pictures of will be limited to 32 bit applications, though that will not matter in many mobile applications. You should also check out Ryan's deep dive into the new Denver and Kepler version here.
"In early 2011, during a CES press event, Nvidia revealed its Project Denver CPU initiative. On Sunday evening, at another CES press conference, the company provided a glimpse of the first Denver-based processor: the Tegra K1. This next-generation SoC features dual Denver CPU cores clocked at up to 2.5GHz. The cores were designed by Nvidia, and they're compatible with the 64-bit ARMv8 instruction set. They have a seven-way superscalar pipeline and a hefty 192KB of L1 cache."
Here is some more Tech News from around the web:
- A Look at NVIDIA’s Most Ambitious SoC Yet: Tegra K1 @ Techgage
- Yahoo adverts infect 27,000 people per hour with malware @ The Inquirer
- Acer cozies up to Google with new 'droid PCs and fondleslab, Chromebook @ The Register
- Trewgrip mobile QWERTY hands-on @ The Inquirer
- China touch panel makers focus on bezel-free applications in 2014 @ DigiTimes
- Intel Ivy Bridge Linux Performance Stepped Up In 2013 @ Phoronix
- AT&T takes aim at T-Mobile with $450 cashback lure @ The Register
- HP: We're axing 29,000 workers? Add another 5,000 to that @ The Register
- Zetta Z15 HD Security Camcorder @ NikKTech
- Seagate updates Backup Plus Slim HDD with smartphone support @ The Inquirer
- MAKE at CES: Follow our Live Blogging Here
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Once known as Logan, now known as K1
NVIDIA has bet big on Tegra. Since the introduction of the SoC's first iteration, that much was clear. With the industry push to mobile computing and the decreased importance of the classic PC design, developing and gaining traction with a mobile processor was not only an expansion of the company’s portfolio but a critical shift in the mindset of a graphics giant.
The problem thus far is that while NVIDIA continues to enjoy success in the markets of workstation and consumer discrete graphics, the Tegra line of silicon-on-chip processors has faltered. Design wins have been tough to come by. Other companies with feet already firmly planted on this side of the hardware fence continue to innovate and seal deals with customers. Qualcomm is the dominant player for mobile processors with Samsung, MediaTek, and others all fighting for the same customers NVIDIA needs. While press conferences and releases have been all smiles and sunshine since day one, the truth is that Tegra hasn’t grown at the rate NVIDIA had hoped.
Solid products based on NVIDIA Tegra processors have been released. The first Google Nexus 7 used the Tegra 3 processor, and was considered the best Android tablet on the market by most, until it was succeeded by the 2013 iteration of the Nexus 7 this year. Tegra 4 slipped backwards, though – the NVIDIA SHIELD mobile gaming device was the answer for a company eager to show the market they built compelling and relevant hardware. It has only partially succeeded in that task.
With today’s announcement of the Tegra K1, previously known as Logan or Tegra 5, NVIDIA hopes to once again spark a fire under partners and developers, showing them that NVIDIA’s dominance in the graphics fields of the PC has clear benefits to the mobile segment as well. During a meeting with NVIDIA about Tegra K1, Dan Vivoli, Senior VP of marketing and a 16 year employee, equated the release of the K1 to the original GeForce GPU. That is a lofty ambition and puts of a lot pressure on the entire Tegra team, not to mention the K1 product itself, to live up to.
Tegra K1 Overview
What we previously knew as Logan or Tegra 5 (and actually it was called Tegra 5 until just a couple of days ago), is now being released as the Tegra K1. The ‘K’ designation indicated the graphics architecture that powers the SoC, in this case Kepler. Also, it’s the first one. So, K1.
The processor of the Tegra K1 look very familiar and include four ARM Cortex-A15 “r3” cores and 2MB of L2 cache with a fifth A15 core used for lower power situations. This 4+1 design is the same that was introduced with the Tegra 4 processor last year and allows NVIDIA to implement a style of “big.LITTLE” design that is unique. Some slight modifications to the cores are included with Tegra K1 that improve performance and efficiency, but not by much – the main CPU is very similar to the Tegra 4.
NVIDIA also unveiled late last night that another version of the Tegra K1 that replaces the quad A15 cores with two of the company's custom designs Denver CPU cores. Project Denver, announced in early 2011, is NVIDIA's attempt at building its own core design based on the ARMv8 64-bit ISA. This puts this iteration of Tegra K1 on the same level as Apple's A7 and Qualcomm's Krait processors. When these are finally available in the wild it will be incredibly intriguing to see how well NVIDIA's architects did in the first true CPU design from the GPU giant.
Follow all of our coverage of the show at http://pcper.com/ces!
Cortex-A12 fills a gap
Starting off Computex with an interesting announcement, ARM is talking about a new Cortex-A12 core that will attempt to address a performance gap in the SoC ecosystem between the A9 and A15. In the battle to compete with Krait and Intel's Silvermont architecture due in late 2013, ARM definitely needed to address the separation in performance and efficiency of the A9 and A15.
Source: ARM. Top to bottom: Cortex-A15, A12, A9 die size estimate
Targeted at mid-range devices that tend to be more cost (and thus die-size) limited, the Cortex-A12 will ship in late 2014 for product sampling and you should begin seeing hardware for sale in early 2015.
Architecturally, the changes for the upcoming A12 core revolve around a move to fully out of order dual-issue design including the integrated floating point units. The execution units are faster and the memory design has been improved but ARM wasn't ready to talk about specifics with me yet; expect that later in the year.
ARM claims this results in a 40% performance gain for the Cortex-A12 over the Cortex-A9, tested in SPECint. Because product won't even start sampling until late in 2014 we have no way to verify this data yet or to evaluate efficiency claims. That time lag between announcement and release will also give competitors like Intel, AMD and even Qualcomm time to answer back with potential earlier availability.
Subject: General Tech, Processors, Mobile, Shows and Expos | February 25, 2012 - 07:06 PM | Scott Michaud
Tagged: texas instruments, MWC 12, arm, A9, A15
Texas Instruments could not wait until Mobile World Congress to start throwing punches. Despite their recent financial problems resulting in the closure of two fabrication plants TI believes that their product should speak for itself. Texas Instruments recently released a video showing their dual-core OMAP5 processor based on the ARM Cortex-A15 besting a quad-core ARM Cortex-A9 in rendering websites.
Chuck Norris joke.
Even with being at a two core disadvantage the 800 MHz OMAP5 processor was clocked 40 percent slower than the 1.3 GHz Cortex A9. The OMAP5 is said to be able to reach 2.5 GHz if necessary when released commercially.
Certain portions of the video did look a bit fishy however. Firstly, CNet actually loaded quicker on the A9 processor but it idled a bit before advancing to the second page. The A9 could have been stuck loading an object that the OMAP 5 did not have an issue with, but it does seem a bit weird.
About the fishiest part of the video is that the Quad-Core A9, which we assume to be a Tegra 3, is running on Honeycomb where the OMAP5 is running Ice Cream Sandwich. Ice Cream Sandwich has been much enhanced for performance over Honeycomb.
We have no doubt that the ARM Cortex-A15 will be much improved over the current A9. The issue here is that TI cannot successfully prove that with this demonstration.
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