Projector CPU chip comparison: What's Different?

RickyT

Member
Recently, more and more TV and projection brands use Amlogic T972-H chip, such as Xiaomi full-screen TV Pro, Fengmi and other projectors.

Amlogic T972 chip uses quad-core Cortex-A55 architecture. In terms of graphics, the GPU is upgraded from Mali 450 to Mali-G31, supporting the latest OpenGL ES 3.2 and Vulkan 1.1 API.

This is a comparison of the previous generations of TV chips from Amlogic:

CPU
GPU
USB 3.0
Amlogic T962E​
A53*4​
Mali-T450​
/​
Amlogic T968​
A53*4​
Mali-T830​
1​
Amlogic T972-H​
A53*4​
Mali-G31​
/​

The general classification of CPU and GPU is summarized as follows:

CPU:
High Performance
High Efficiency
Low Power Consumption
Cortex-A72/A73/A75​
Cortex-A53/A55​
Cortex-A35​

This is what the official explanation of A55 says:

Cortex-A55 adopts the latest ARMv8.2 architecture and is built on the basis of its predecessor products. It broke the limit in terms of performance, while still maintaining the same power consumption level as the Cortex-A53. We have tried our best to improve Cortex-A53 and give it the following characteristics:

➤ Under the same frequency and process conditions, the memory performance can be up to twice that of Cortex-A53
➤ Under the same frequency and process conditions, the performance is 15% higher than Cortex-A53
➤ Scalability is more than ten times higher than Cortex-A53

The positioning of the 5 series "high efficiency" and the 7 series "high performance" in ARM Cortex is an indisputable fact.

GPU:
High Performance
High Efficiency
Low Power Consumption
Mali-G71/72
Mali-T860/T880
Mali-T760​
Mali-G51/G52
Mali-T820/T830 Mali-T720​
Mali-400/450/470 Mali-G31​

Compared with T830, Mali G31 has improved power consumption performance.

It can be seen from the above table that T972 is indeed an upgrade to T968, but at the expense of the USB 3.0 interface, it cannot be called a "replacement."

At the same time, here is also a comparison of the main products of another giant MTK (formerly Mstar) in the TV chip industry:

CPUCPUUSB 3.0
Mstar 838A53*4Mali-T8201
Mstar 848(8386)A73*2+A53*2Mali-G51/
Mstar 938A72*2+A53*2Mali-T8202

By comparison, Amlogic T968 and Mstar838 are basically at the same level. Compared with Mstar838, T972 has a certain improvement in CPU, but also due to the abandonment of USB 3.0, it is hard to distinguish. The Mstar938 and 848 (called 8386 in the commercial display field) adopt the Cortex7 series +5 series of large and small core architectures, and the GPU also maintains a higher configuration.
 
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