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Researchers from Rice University in Houston, Singapore's Nanyang Technological University (NTU), Switzerland's Center for Electronics and Microtechnology (CSEM) and the University of California, Berkeley have unveiled an "inexact" chip at the ACM International Conference on Computing Frontiers in Cagliari, Italy.
The chip is allowed to make mistakes in order to gain speed and energy usage advances. This new "inexact" processor is up to 15 times more efficient than current processors. It can be used in certain applications where 100% accuracy isn't mission critical. Examples of this would be video or picture processing.
"It is exciting to see this technology in a working chip that we can measure and validate for the first time," said project leader Krishna Palem, who also serves as director of the Rice-NTU Institute for Sustainable and Applied Infodynamics (ISAID). "Our work since 2003 showed that significant gains were possible, and I am delighted that these working chips have met and even exceeded our expectations."
AMD's latest APU is here, in the form of Trinity where AMD is promising double the performance-per-watt of Llano. A bunch of reviews have just gone live, and we've just scraped a roundup of these reviews for you to check out below:
Intel have only just slipped the 22nm-sporting Ivy Bridge chips onto the market last month, and are already teasing us with the next advancements in process technology. Intel have teased a roadmap where they've shown 10nm, 7nm and 5nm processes already locked down.
Intel are also preparing to upgrade fabrication plants in the United States and Ireland to make chips using the 14nm fab method. Slides weer posted to XbitLabs, as well as a quote from Intel CEO Paul Otellini reminding investors that Intel's research and development is quite deep and looks decades in advance.
If it all goes to plan, Intel would start shipping 10nm processors in 2015, with work on 7nm technology starting shortly after. In order to stay a few steps ahead of the competition, process technology is not the only key to the customer puzzle. Intel will also have to break into the mobile space with powerful, but energy-efficient chips.
Our latest poll had almost 3,200 people who answered, Now that Intel Ivy Bridge processors are officially out...
The results for this poll were quite mixed. 26% of TweakTown readers said that yes, they are going to buy an Ivy Bridge based CPU.
13% said that they were 'on the fence' and undecided. With the most votes, 40% said no, they aren't buying and that they are happy with their current system. On the mobile side, 7% said they might consider an Ivy Bridge based laptop and 15% think Intel have started in the construction business and are now building bridges.
Intel really wants to cosy up to Apple, with CEO Paul Otellini having made it very clear to investors and reporters that the chip-making company will continue to angle more business from Apple in mobile devices, with his mission to "ensure our silicon is so compelling [that] they can't ignore us".
Intel already have a strong relationship with Apple as they're the ones baking processors in all of Apple's desktop and notebook products, but Intel want to replace the ARM-based processors that you'll find in Apple's mobile lineup.
If we rewind a few years, we would have found stories of the iPod and iPhone architect Tony Fadell threatening to quite Apple in 2006 if the company had chosen to go with Intel for their forthcoming iPhone, where CEO Steve Jobs had actually favored. Intel's offerings at the time were not energy-efficient enough, but this was 2006 after all.
There has been a lot of debate back and forth about whether or not Ivy Bridge's "slight" heat problem is caused by Intel's choice to not use solder to attach the IHS to the core. Originally, people were blaming the higher density of the transistors, due to the 22nm process, for the heat issue. Then, someone decided to de-lid the chip and found TIM instead of solder.
First, let me recommend you not remove the IHS from your chip as it could damage your chip, not to mention it voids your warranty. Besides, someone else has already done it for you along with the testing needed to prove that the heat issue is due to the TIM used by Intel. Impress PC Watch wiped off Intel's TIM and replaced it with OCZ's Freeze Extreme and Coollaboratory's Liquid Pro to see the difference.
The results? As you can expect from the title of this news post, the TIM choice that Intel made did in fact yield higher temperatures. Load temperatures at stock settings results in an 8*C and 11*C drop in temperatures which is a pretty big change. Overclocking the chip to 4.6GHz resulted in even bigger differences: 15*C for the OCZ TIM and 20*C for the Coollaboratory TIM.
True, these also used a massive air cooler, but the results should be similar with any air cooler, just higher temps for all tests. Intel really dropped the ball here as these aren't low-end CPUs, these are unlocked, overclocking beasts. It would have been a marginal cost for a huge benefit.
With the Trinity APU launch coming soon, leaks will be coming more frequently and with more credibility. The leak today is from AMD's website itself (the file has since been removed) in the form of a PDF file which had some characteristics such as model numbers and graphics performance of the upcoming APUs.
The part of interest is the graph of the upcoming APUs' graphics performance relative to Intel's Sandy Bridge CPUs. Why not Ivy Bridge? Well, the Trinity APUs shown in the graphic are embedded options and Intel hasn't launched any Ivy Bridge embedded options so this is a more apples-to-apples comparison.
What the graph shows is that the AMD R-464L has 206%, and the R-272F has 145% better performance than Intel i7-2710QE embedded chip in 3DMark 06 and Vantage v1.1.0 applications. However, that Intel chip is using the HD 3000 graphics which is noticeably slower than the HD 4000 graphics of Ivy Bridge.
Other specifications and features of the chips were not given, but with some digging, and educated guessing, it's reasonable to expect that the R-464L is a quad-core APU with HD 7660G graphics. The R-272F is likely a dual-core part featuring HD 7400G or 7500G graphics. The launch of Trinity is supposed to occur May 15, according to one source.
On June 3, Intel plans to launch some cheaper dual-core Ivy Bridge-based CPUs, prices of these new chips will range between $225 and $346. We're also looking at two Core i7 options, the first being the Core i7-3520M which clocks in at 2.9GHz with a turbo frequency of 3.6GHz, 4MB of L3 cache, a 35W TDP and pricing of $346.
The second Core i7 offering, the Core i7-3667U retains the same L3 cache, but mixes up the clock speed to 2GHz, with a turbo frequency of 3.2GHz, but we have a big change in the TDP, just 17W, it also retains the same $346 pricing.
The three Core i3 offerings are split into 2 options, one of them with a 17W TDP, the remaining two with 35W TDPs. The first one, Core i5-3320M has a clock speed of 2.6GHz, turbo at 3.3GHz, 3MB of L3 cache and a price of $225, the second, Core i5-3360M has a frequency of 2.8GHz, turbo up to 3.5GHz, the same L3 cache amount, but a price of $266. The final Core i5-3427U has a clock speed of 1.8GHz, turbo at 2.8GHz, 3MB L3 cache, and a 17W TDP, its price is set at $225.
If you thought the dual-core processor in your smart device was fast, I bet you thought the quad-core processors we're seeing in smart devices like the Samsung GALAXY S III which sports the Exynos 4 Quad is impressive, well, not so much.
TSMC have just announced a 28nm ARM Cortex-A9 dual-core processor which can run at over 3GHz. These processors are from the high performance for mobile applications (HPM) process node, but will also be made to operate at lower speeds between 1.5GHz and 2.0GHz, for less demanding user markets. The high performance chips are to be baked into tablets, mobile products and networking applications.
TSMC has said that the resulting SoC designs will have the lowest PPA landmark (which is a ratio measure of power to area) available in the market. When compared to the 40nm TSMC-made ARM chips, Cliff Hou, TSMC Vice President of R&D has said:
At 3.1 GHz this 28HPM dual-core processor implementation is twice as fast as its counterpart at TSMC 40nm under the same operating conditions. This work demonstrates how ARM and TSMC can satisfy high performance market demands. With other implementation options, 28 HPM is also highly suited for a wide range of markets that prize performance and power efficiency.
If for some reason you just can't wait for the official announcement of the upcoming Trinity platform, then do I have some good news for you. Chinese site EXPreview has supposedly come across AMD presentation slides which detail the upcoming APU. The slides do look to be legitimate as some of the details match what AMD has already released.
AMD has already made public that the new Trinity APU will feature the updated Bulldozer CPU cores dubbed Piledriver. The slides purport that the new cores will process more instructions per clock while leaking less power. The APUs are set to come in dual- and quad-core versions that range from 2.0GHz to 3.8GHz. The TDP appears to top out at 100W.
The lower clock speeds are partially expected due to the fact that the CPU shares its die with a powerful graphics processor. Speaking of the graphics processor, the GPU included on die has up to 384 ALUs which can clock all the way up to 800MHz. The GPU appears that it takes up over half of the silicon die.
The die is, if the slides are right, 246mm2, which is slightly bigger than Llano and quite a bit larger than Ivy Bridge, even though Ivy Bridge has more transistors. This is because Ivy Bridge is built on a 22nm process whereas the new Trinity APU will be built using a 32nm SOI process. Once the official launch date comes, we will be able to confirm this information. Stay tuned.