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MediaTek 5G SoC to debut new Cortex-A77 and Mali-G77 chips



Arm revealed a Cortex-A77 core with up to 20 percent better IPC performance over the Cortex-A76 plus a faster new Mali-G77 GPU. MediaTek combines both chips with its Helio M70 modem for a 7nm "5G SoC."

Just before Intel launched its 10nm 10th Gen Ice Lake processors on Computex, Arm revealed another advanced Cortex-A design and a new Mali GPU. Cortex-A77 is a faster variant of the Cortex-A76, while Mali-G77 updates Mali-G76, which, like -76, was announced a year ago. The chip designer also released more details on his Arm ML machine teacher processor. After Arm's message, MediaTek announced the first SoC to use Cortex-A77 and Mali-G77 (see below).



Cortex-A77 block diagram and MediaTek 5G SoC
(click images to enlarge)

The Cortex-A77 is designed for "next generation smartphones, laptops and other mobile devices," says Arm. It will also probably appear in some high-end, Linux-based embedded boards and devices.

The Cortex-A77 offers a 20 percent boost in one-wire IPC performance over -A76, claims Arm. -A77 is also claimed to provide 35+ percent more FP performance and 15+ percent more memory bandwidth improvements.

The 20 percent IPC improvement is a minor boost compared to 35 percent jump from Cortex-A75 to -76, which debuted a new Artemis microarchitecture, which is also used by -A77. Like -A76 -A77 supports 7nm fabrication, which will be used by MediaTeks 5G SoC.

Cortex-A76 supports Cortex-A76 up to quad-core blocks with similar clock speeds. Increasing improvements include support for Armv8.2 architecture in addition to Armv8.1, along with AArch32 and AArch64 support. There are also dual branch prediction bandwidth and 50 percent increase in shipping bandwidth, including improvements.

Arm also notes features like 64KB L1 I / D caches, 256KB and 512KB private L2 caches and up to 4MB parts L3 caches. Extensions are available for cryptography, RAS and ARV8.3 (LDAPR instructions only).

Cortex-A76, which runs Qualcomm's 10nm, up to 2.85GHz Snapdragon 855 and Rockchip's upcoming and similar octa-core Rockchip RK3588, supports Arm's DynamIQ multi-core system, a more flexible version of Big .Lille. Arm recommends pairing with the same Cortex-A55 sponge chips supported by Cortex-A75 and A76.

Mali-G77 with new Valhall engine

Mali-G77 GPU debuts a new Valhall architecture. It gives a 30 percent increase in performance density compared to Mali-G76 and a 30 percent energy efficiency, Arm said. It is also said to be a 60 percent improvement in machine learning (ML). Arm expects the chip to offer 40 percent higher peak graphics performance.



Mali-G77 (left) and Arm ML block diagrams
(click on images to enlarge)

The new Valhall architecture introduces a new superscalar engine with greater energy efficiency and performance. It also debuts a "simplified scalar ISA with a new compiler-friendly instruction set." Other new features include dynamic scheduling of instructions and better support for modern APIs like Volcano.

The Mali-G77 provides wider execution motors than -G76, with 16 broadband and 32 FMA lanes per. The core, up from 24 on -G76. A new quad texture folder doubles Texels per cycle to four, which will improve the gameplay.

Arm ML Update

Cortex-A77 is designed to work with Arm & # 39; s Project Trillium AI chips through DynamIQ, helping to enhance applications like augmented reality and visual and voice recognition. An Arm blog entry released in connection with -A77 news offers more details about Arm ML, which follows a former Trillium chip called Object Detection (OD) Processor.

Arm ML design is expected to debut as a co-processor in mobile phones later this year. Arm now says that the chip will achieve 5 TOP & # 39; Watts, up from the expected> 3 TOP & # 39; Watt mentioned a year ago. The ML update also adds details such as the ability to use Winograd convolution to accelerate common filters by 225 percent compared to "other NPUs."

MediaTek 5G SoC

MediaTek's message about its upcoming 5G SoC Multi-mode chipset is short on details like the number of Cortex-A77 cores. The 7nm fabricated SoC will also include the Mali-G77, as well as a third generation APU (AI Processing Unit). MediaTek 5G SoC provides 4K60 video encoder and decoding and an internet provider that supports up to 80 megapixel cameras.



5G SoC infographic
to enlarge)

5G SoC is named after the integration of MediaTek's Helio M70 5G modem, but as shown in the CNXSoft post that warned us of the message, "5G SoC "is more of a descriptor than the actual product name. 7nm Helio M70 was announced a year ago, with plans to appear in smartphones sometime in 2019.

As Qualcomm's Snapdragon X50, the M70 is one of the first 5G smartphone modems on the market. The Helio M70 will offer up to 4.7 Gbps peak download using sub-6GHz frequencies. The chipset contains both LTE and dual 5G networks (EN DC) that enable multi-charge connection from 2G to 5G.

Additional Information

Arm's Cortex-A77 and Mali-G77 designs appear to be available now, and MediaTeks 5G SoC based on the chips are beginning to sample sampling in Q3 2019 with telephone shipments in the 1st quarter of 2020. More information can be found in Arm's Cortex-A77 message and product page, as well as its Mali-G77 advertising and product page. More on the MediaTek 5G SoC can be found in the 5G SoC message and the product page.


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