Leaked slides reveal ARM's new Cortex-A55, Cortex-A75 CPU cores and Mali-G72 GPU (UPDATE)

Leaked slides reveal ARM's new Cortex-A55, Cortex-A75 CPU cores and Mali-G72 GPU (UPDATE)
UPDATE: This is now official as ARM has unveiled the three new products Monday morning. Devices implementing these new designs should be available to consumers some time next year.

Before being taken down, a series of leaked slides posted online revealed some of the latest technology coming from microprocessor designer ARM. Expected to be introduced tomorrow are the premium Cortex-A75 CPU core and the mid-range Cortex-A55 core. The Cortex-A75 core provides 16% to 48% more performance than the Cortex-A73 as measured by benchmark sites. However, the Octane 2.0 site has recently been discontinued, so the high score should have an asterisk next to it.

The Cortex-A55 is designed to be used in mid-range processors, or paired with the Cortex-A75 for Big.LITTLE processors. The latter are comprised of a premium high-end core for power intensive tasks, and a lower-end core to cover general housekeeping. The Cortex-A55 improves performance by 14% to 97% compared to the Cortex-A53, and provides 15% improved battery efficiency.

The Cortex-A75 and Cortex-A55 are the first chips designed by ARM to use the company's DynamIQ technology. This allows chipset designers to  "mix and match" as many as eight CPU cores in a single cluster. Inside the latter, developers can use combinations such as 1+ 7, 2+6, 3+5, 4+4 or any configuration. Because the CPU cores announced today are built using the firm's new ARMv8.2-A architecture, they cannot be combined with older ARMv8-A based CPUs such as the Cortex-A73 and Cortex-A53.

Also expected to be unveiled tomorrow is the new Mali-G72 graphics chip. The new GPU will offer 40% improved performance over the G-71 GPU with 25% better power efficiency.

ARM does not produce these chips, but provides designs for manufacturers like Samsung, MediaTek and Qualcomm. We should learn more tomorrow, especially when it comes to availability of chips using these new designs.


via Liliputing

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25 Comments

1. trojan_horse

Posts: 5868; Member since: May 06, 2016

'Also expected to be unveiled tomorrow is the new Mali-G72 graphics chip. The new GPU will offer 40% improved performance over the G-71 GPU with 25% better power efficiency." 40% increase in power... Woah! The 25% better efficiency is the icing in the cake... Damn.

2. DellB

Posts: 55; Member since: Jun 07, 2015

So, if they don't produce these chips but provide designs, we can say that the touted performance figures and reduced power consumption are at most theoretical and will not represent real life performance. Huh?

6. mikehunta727 unregistered

Obviously they test it in lab

9. tyger11

Posts: 291; Member since: Oct 29, 2012

Much as Apple's ARM-based designs differ in performance from Qualcomm's, Samsung's, and MediaTek's, yeah, they'll vary. But, the relative performance of each of those manufacturer's designs will improve from their current designs to the new ones based on these new ARM designs. A rising ARM tide raises all ARM-based boats, as it were.

22. Dr.Phil

Posts: 2359; Member since: Feb 14, 2011

Yes, ARM takes performance figures based on comparisons to previous processor designs. They don't really take into consideration what process the designs are built on or other factors like RAM usage, although I'm sure there's some asterisk somewhere that gives what standard they are thinking. However, for the most part Samsung pretty much builds their CPUs based directly on ARM designs, so these performance figures will most likely apply to Exynos processors almost directly (although there is the potential for better efficiency whenever Samsung develops 8 nm and smaller processes to build on). It's also important to note that Qualcomm bases their Snapdragon CPUs on modified ARM designs, so you will likely see a Cortex A75 chipset based product in the near future. The Snapdragon 660 that was just announced is based on a modified A73 design.

3. abdoualgeria

Posts: 928; Member since: Jul 27, 2015

Finally cortex-A53 is dead .......

21. SYSTEM_LORD

Posts: 1168; Member since: Oct 05, 2015

Yeah, finally. You do know what that means, though, right? The ARE was such a work of microarchitecture art that it was difficult to make meaningful upgrades to it. Finally they have, and trust me, the A55 will be around for a while....and you'll grow to hate it, just like you tire of the A53.

4. AmashAziz

Posts: 2923; Member since: Jun 30, 2014

Why a 14 to 97% difference in performance b/w A-55 and 53?? I mean, such huge gaps?

8. abdoualgeria

Posts: 928; Member since: Jul 27, 2015

Its 14 % faster on some benchmarks , and 97 % faster in others...

15. AmashAziz

Posts: 2923; Member since: Jun 30, 2014

I know that......-_- My question was to the sensibles who could tell me why they think there's such a huge gap. Please refrain from wasting my time with such replies. Thank you.

19. ibend

Posts: 6747; Member since: Sep 30, 2014

his answer is right, and I don't think you get what he mean,,, "why they think there's such a huge gap" they didn't think about it, they test it with benchmark.. and look at 4th slide A55 14% faster in SPECINT2006 and 97% faster in LMBench memcpy

23. AmashAziz

Posts: 2923; Member since: Jun 30, 2014

Okay. But: "why they think there's such a huge gap" I am not asking this from those who ran the benchmarks. I am asking this question from those with enough knowledge of tech to tell me the reason for such huge gaps in two different benchmarks. Are those two benchmarks testing different things?

24. ibend

Posts: 6747; Member since: Sep 30, 2014

yes they test different side of CPU performance.. LMbench for memory performance Octane for javascript engine performance SpecFP for Floating Point performance SpecINT for Integer performance geekbench for combination of memory, floating point, and integer performance (single core test for this case)

25. AmashAziz

Posts: 2923; Member since: Jun 30, 2014

Thanks a lot for the info!

5. Ordinary

Posts: 2454; Member since: Apr 23, 2015

Kirin 970 will most likely come with this.

7. Bondurant

Posts: 781; Member since: Jun 04, 2014

Past leaks on Kirin 970 do match with using this new Mali G72.

16. AmashAziz

Posts: 2923; Member since: Jun 30, 2014

Evidence of any leak please! Thanks in advance.

10. Omran2000

Posts: 101; Member since: Aug 18, 2016

I think the kirin 970 will use them ....

11. Cat97

Posts: 1892; Member since: Mar 02, 2017

I am surprised how good the 8-core Cortex A53 smartphones are nowadays. Not anyone needs huge processing power, some people actually benefit more from better battery life. The A55 will be a more than welcome improvement, especially in power efficiency department.

12. trojan_horse

Posts: 5868; Member since: May 06, 2016

That's why midrange phones with Cortex-A53 are great for being used as a backup phone... Monster battery life.

17. AmashAziz

Posts: 2923; Member since: Jun 30, 2014

I think battery life depends on usage. Coz in my case, I didn't even get NEAR to monster battery life with my P9 lite that I have used for some time. It was only good for light tasks. As soon as I started playing Clash Royale, it drained battery faster than a 6S Plus that I have used for a good time too. And the game isn't even graphically intensive. Such amount of drainage also happened in other apps such as whatsapp. It all comes down to personal usage though. These tasks require wifi, and I keep my bluetooth, mobile data, gps, and auto sync off. The iPhone 6S plus didn't lose that much in my comparison. It might not even be fair to compare both of these phones for their battery life, but I just wanted to give the idea that not all midrangers are amazing at it.

20. joey_sfb

Posts: 6794; Member since: Mar 29, 2012

I can vouch for that! I own a phone that at exactly that, its has a Mediatek MT6753 8-cores A53 running at 1.3Ghz. Despite the screen size of 6.44 inch, the phone does come with a 6000mAh battery. That's phone beats my Mi Max 1 in term of battery life. Mi Max 1.5 days, the RAMOS Max 1 easily 2 days with uncontrol usage.

13. LGV20

Posts: 21; Member since: May 22, 2017

Are these the specs for upcoming Note 8?

18. combatmedic870

Posts: 984; Member since: Sep 02, 2015

Well if you think Samsung and Qualcomm can design, produce, test and install the chip in the note 8. I think it's highly unlikely(unless they've known about these new chips for months) . In the S9? Perhaps. I still have my doubts about that too though.

14. mikehunta727 unregistered

What a time to be alive

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