ARM announces quad-core Cortex-A15 chips

ARM announces quad-core Cortex-A15 chips
ARM today has made the announcement many have been waiting for, the availability of their quad-core A15 CPUs based on the 28nm die process. The Cortex-A15 hard macro processors are floating-point monsters, running at 2GHz and cranking out 20,000 DMIPS (that would be Dhrystone Million Instructions Per Second) while sipping electricity at the same rate as the dual-core Cortex-A9s.

A large part of that efficiency gain comes from the die shrink between the Cortex-A9 and the Cortex-A15; the A9 was built on a 40nm process, the same as every other mobile CPU sold last year, from the iPhone 4S to the Droid Incredible 2. The shift to a 28nm process in the A15 takes advantage of one of the few “free lunch” aspects of physics – shrinking the transistors means less electricity is lost as heat, so you clock cycles get faster and more efficient, which is win-win for end users. Of course die shrinks are incredibly hard engineering feats, so that “free lunch” is awfully expensive to "cater".

In this case TSMC is doing the catering; this is not a surprise, as TSMC is making just about everyone’s 28nm chips these days. In fact, there’s some concern about whether the yield will be high enough for the volumes that smartphone and tablet OEMs want to ship in the second half of the year.

Speaking of which, the second half of the year is probably the earliest you'll see a Cortex-A15 in a device – with availability starting now, it will most likely be Q4 before we see a real product packing these mobile marvels. Hopefully between now and then SoCs can get an integrated LTE voice chip made on the same die size working, which would finally give us meaningful battery life on LTE phones, even those with normal-sized batteries.

source: ARM via Engadget



1. Captain_Doug

Posts: 1037; Member since: Feb 10, 2012

I really like this. A lot.

2. SuperAndroidEvo

Posts: 4888; Member since: Apr 15, 2011

Hey, hey, hey, just in time for a Samsung Galaxy Note 2. Man I can't wait to see what Samsung puts into that beast of a phone. The Samsung Galaxy Note 2 is what I want hands down!

4. android_hitman unregistered

but sammy uses exynos .. so you will never see it :)

8. SuperAndroidEvo

Posts: 4888; Member since: Apr 15, 2011

Wait, I thought that Samsung's Exynos, Texas Instrument's OMAP, & NVIDIA's Tegra are all ARM based tech? Qualcomm's Snapdragon are Krait based which is not ARM.

13. SherlockPhones

Posts: 3; Member since: Apr 17, 2012

qualcomm is also uses ARM. They just the make custom designs that exceed the standard instructions which is why scorpion(cortex a-8) competed very well against A-9 and krait which is A-9 is similar to cortex A-15 in design

20. remixfa

Posts: 14605; Member since: Dec 19, 2008

qualcomm DOES NOT USE ARM. :) qualcomm uses their own in house chip designs and then calls them "ARM equivilants".. which basically means.. they suck. Exynos is a modified ARM design. Samsung uses ARM as its base design and builds from it. Nvidia and Texas Instruments (OMAP) generally have the closest to stock ARM chips... with TI being the most stock of the group.

26. Hunt3rj2

Posts: 396; Member since: Nov 11, 2011

Qualcomm licensed the ARM ISA, it supports everything that the Cortex A9 and A15 support.... which basically means you're full of s**t (again). Samsung cannot modify the Cortex A15 design, that is a black box. They can change everything outside it and the silicon that it is made on, but changing the actual Cortex design means they have to pony up the cash for an ISA license like Qualcomm. What they do manage to do is make it much faster through solid process technology and generally better SoC design around the Cortex cores (better GPU, memory bandwidth, power efficiency, etc.) Krait didn't need to beat Cortex A15 this round, it already won by being more efficient than Tegra 3 and running LTE. If Cortex A15 is a no-show, they win by default, no questions asked. And when Cortex A15 lands, they'll already have experience with 28nm and be able to better use the process to increase performance.

27. darac

Posts: 2156; Member since: Oct 17, 2011

Hats off to you man..the best, most mature tech comment i've seen here for a long while.

31. remixfa

Posts: 14605; Member since: Dec 19, 2008

Qualcomm's design for krait and for crapdragon were in house designs. u really need to go do some research before you tell me that Im the one that is full of it. " Qualcomm licenses ARM's technology so that it can use it to build its own integrated chipset solutions that are compatible, but not exact copies of ARM's reference designs. This allows Qualcomm to do some things a bit differently." They licence ARM specifically to use it as a reference point to build their own chips. which is why they always say "A9/A15 COMPARABLE" Also, Exynos IS a modified ARM. It is not a stock chip. Did you think it was magic that there was a power difference between the OMAP3, T2, and Exynos, even though they all start out with the same silicone? Everything you just mentioned helps the statement that samsung modifies and builds on ARM. Krait doesnt need to beat anything. Qualcomm isnt in it for the high end specs like samsung is. They are in it for cheap production and high compatibility so they can sell to lots of manufacturers. Samsung's Exynos is more of a boutique chip. It is lower yield and higher power. It is meant for samsung (and apple). The "spec war" is specifically for us geeks to make comparisons between chips.

36. Hunt3rj2

Posts: 396; Member since: Nov 11, 2011

1. There is no "stock chip", because ARM only makes the CPU. 2. Qualcomm does need to keep pace, they're getting their SoCs in high end phones. 3. Exynos 4210's CPU will have the same performance clock for clock as OMAP4. Tegra 2 is different because they left out NEON add-ons that ARM makes optional in the Cortex designs. They may increase the overclocking headroom (Notice how Exynos 4210 launched at 1.2 GHz, OMAP4 only launched at 1 GHz, and so did Tegra 2.) You need to read more and understand the terminology, Krait cores are used in Snapdragons, as Snapdragon is a family of SoCs. Qualcomm has an ISA license, which means that they have full freedom to design an ARM core that can be radically different from the Cortex series. However, just because it is different in design does not mean it runs ARM code differently, because that would mean it's not an ARM chip at all. Your argument is essentially like saying AMD CPUs aren't true x86 chips because it's a different design compared to Intel CPUs.

30. SuperAndroidEvo

Posts: 4888; Member since: Apr 15, 2011

Ok cool. So everything is basically ARM. Just that Qualcomm HEAVILY modifies their chip into their KRAIT monster! Samsung does the same thus their EXYNOS monster.

19. jabberwocky

Posts: 89; Member since: Feb 21, 2012

Exynos is also licensed and modded ARM.

28. darac

Posts: 2156; Member since: Oct 17, 2011

Yeah..i'm a Sony fanboy and am like holding on for their major release in Q4, but Note 2..uh, that one's starting to climb up to the top of my wish list. It'll be an ultimate all-in-one handheld gadget.

29. SuperAndroidEvo

Posts: 4888; Member since: Apr 15, 2011

I know what you mean. I was so impressed with the Samsung Galaxy Note that it's making me crazy thinking about what will be inside the Samsung Galaxy Note 2!

3. JBz007

Posts: 63; Member since: Mar 02, 2012


5. shadowcell

Posts: 300; Member since: Mar 28, 2012

The key to the battery saving is ARM's new "companion core" which runs the smartphone is idle and all 4 cores are disabled temporarily. Supposedly, NVIDIA is working on a Tegra 4 using this technology. All exciting news.

11. Scott_H

Posts: 167; Member since: Oct 28, 2011

The new companion core helps reduce energy consumption during computational "downtimes", but the die shrink saves energy all the time.

14. theoak

Posts: 324; Member since: Nov 16, 2011

Doesn't the Tegra 3 use a companion core already? This is nothing new as far as NVidia is concerned.

21. remixfa

Posts: 14605; Member since: Dec 19, 2008

yea, thats not an ARM companion core, thats an Nvidia companion. And that is currently in use in the Nvidia T3 that runs the OneX and Transformer Prime.

6. Bluesky02

Posts: 1439; Member since: Dec 05, 2011

The Next Xbox is rumor to have 16 Core CPU

7. jellytime

Posts: 135; Member since: Dec 05, 2011

Simple answer NO

10. jaytai0106

Posts: 1888; Member since: Mar 30, 2011

I am confused about what Xbox's 16 core has to do with this ARM quad core? I did hear about the rumor that the next gen kinect will use 4 cores alone. But rumor is rumor. Back to this beast quad core!!!! This does sounds amazing!! I do have a question thought. Why are companies trying to make faster processors for phones instead of making them more energy efficient. I am currently still using the Atrix 4G and having no problem with its speed. And my friends who have the Razr and SGS2 told me that they love the speed and there is no need to be faster. I am waiting for the HTC One X :) For the Sammy fans who are reading my comment right now, I do think SGS3 is going to be a beast and probably will beat HTC One X. However, I am not a super power user and the HTC One X will suit me just fine. I do like the design of One X and its camera function feature. Samsung's AMOELD has the blue tin to create the true black, but sadly I just can't get used to look at the blue tin :( Companies please make more energy efficient CPU instead of faster for now. I really can't find any App out there needs that much of HP under the hood. Screen display still uses more battery than the CPU, so that's probably the problem we should tackle.

17. groupsacc

Posts: 232; Member since: Feb 28, 2012

AMOLED screens don't utilise "blue tin" (seriously don't know what the heck u r on about). I assume that you are saying that it somehow uses the blue sub pixel to "render" black more black. OLED screens produce black by completely turning off the pixel. Like turning off your bedroom lights when you go to sleep. Whereas on LCD screens the backscreen light is on all the time (whether the back lighting is fluorescent or LED based) but you "block" the pixel to produce black. Like putting on a blindfold when you go to sleep. And the bedroom light will always sip through the sides of the blindfold so you are never in complete darkness.

22. remixfa

Posts: 14605; Member since: Dec 19, 2008

good analogy. The new chips are more power efficient and more powerful at the same time. Shrinking the die (chip) from 40nm to 28nm saves a lot of energy right off the bat. Add in other improvements and you actually have a pretty serious bump in battery life.

33. jaytai0106

Posts: 1888; Member since: Mar 30, 2011

Sorry bud, that was what I meant to say and I know it's not actual tin they put on the screen. But the screen always looks blue.

9. Carlitos

Posts: 645; Member since: Oct 23, 2011

So chances are this will come with Samsung galaxy s3. Cause chances are this has been out for a while longer.


Posts: 4851; Member since: Apr 13, 2012


15. Toad222

Posts: 9; Member since: Mar 03, 2012

Need a quadcore of this and razr maxx battery life and jelly bean, my life is set

16. Bluesky02

Posts: 1439; Member since: Dec 05, 2011

Because smartphones like Samsungs are catching up with technologies so quickly that they could soon match existing consoles power. So Microsoft need to make the next xbox in such a way that it'll stay high end for next two generations ahead. Rumor specs are - IBM PowerPC 16 Core CPU - 2x AMD GPU 7000 series - 4 GB RAM - Kinect 2.0 - Blu-ray The rest i forgot...

23. remixfa

Posts: 14605; Member since: Dec 19, 2008

needs more ram! it better be DDR5 ram if its only 4gigs. :)

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