What is the multi core of mobile GPU| Love to play computer games - 上海419贵族宝贝-上海后花园1314-上海品茶网-阿拉爱上海

In a previous article, the editor once Seven Rainbow's new flat panel "eight core GPU" Reported. At that time, the news came out that the SoC used by the tablet was Quanzhi A30, which used a Cortex-A7 quad core processor and a PowerVR SGX543MP8 graphics processor. The parameters were very satisfying. However, according to the current process technology and heat control, will there really be eight core GPUs? Let's follow Xiao Bian to understand.

The information about Quanzhi A30 released at that time showed that the SoC used PowerVR SGX543 MP8, of which the last "MP" represents the number of cores. For example, the PowerVR SGX543 MP2 used by our common iPad 2 is a dual core GPU, while the PowerVR SGX543 MP4 used by The New iPad is a quad core GPU, the latest The PowerVR SGX554 MP4 is also quad core. If Quanzhi really uses the PowerVR SGX543 MP8, its theoretical performance will be comparable to that of the iPad 4. At that time, the author was very excited when he heard the news. The GPU of mobile devices is finally not the only one of Apple?

But the latest news once again confirms the truth that reality is always cruel... The domestic website published the relevant parameters of Quanzhi's A31. The parameters show that its GPU is "just" SGX544 (not excluding SGX544MP2), which falls far behind the eight core GPU published at that time, which is very disappointing. The following are some parameters of Quanzhi A31.:

CPU: A7 quad core L2: 1M L1: 256k
GPU: PowerVR SGX544 (4 vertex processing engines, 4 shading engines)
Video: full HD 4k * 2K 30fps (maximum specification)
Display: HDMI 4k * 2K 30fps (maximum specification)
MEMORY DDR3/DDR3L (maximum specification)
Os: Support WIN8 and Android 4.2

Did you find something fishy? The SGX544 has four vertex processing engines and four shading engines. The so-called "eight cores" may be a combination of four engines 。 This is somewhat misleading to consumers. What we usually mean by "core" is, of course, how many "GPUs" there are, and it is a bit excessive to use some engines in GPUs to fool users.

Similarly, many manufacturers have also made great contributions to the parameters of Tegra3's Geforce ULP. The mobile phones/tablets that basically use Tegra3 as SoC will use the "12 core GPU" for publicity, which is also suspected of misleading consumers, In fact, the number of 8 core units (4 Vertex Shaders and 4 Pixel Shaders) in Tegra3 processor has been increased to 12 。 The Vertex Shader here is the vertex processing engine we mentioned earlier, and the Pixel Shader is the pixel rendering engine. That is, many manufacturers regard the number of Shaders in Geforce ULP as "core" to promote, which is obviously inappropriate. In fact, the Geforce ULP of Tegra3 is a single GPU. Similarly, some manufacturers that use GC4000 even claim that it is "16 cores", which is also easy to mislead consumers. In fact, GC4000 only has 8 Shaders.

This is the official parameter of NVIDIA, and also uses "core quantity".

The number of GPU shaders is indeed linked to the GPU performance, which directly affects the GFLOPS performance 。 Among them, Adreno 320 (single core GPU) and SGX543MP4 (quad core GPU) both have 16 shaders, which directly shows that their performance is much higher than other products in the same period. The SGX554MP4 (quad core GPU) of Apple A6X has 32 shaders, so its current performance is completely dominant.

The author believes that the concept of multi-core GPU is easy to cause misunderstanding among consumers. In fact, the most core GPU now is the quad core, namely the SGX543MP4, SGX554MP4 and Mali-400MP4 used by the iPad. Of course, the GPU does not have to have multiple cores for high performance , such as the newly launched Adreno 320 and Mali-T604 Just two examples.

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