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Imagination has announced its IMG B series with GPUs. These chips are available under license and can be integrated into chips from third parties. According to Imagination, the GPU series has up to 6tflops of computing power, depending on the model.
Of IMG B-serie is the successor to the current one IMG-A-serie, in the december 2019 was introduced. Compared to those previous chips, the GPU would consume 30 percent less power and the chip surface would be reduced by 25 percent, Imagination claims. The IMG B series is the 11th GPU generation of the company. According to the company, the various GPUs in the B series can be used in mobile devices, IoT products, microcontrollers, automotive, or other devices. The chips will be available as IP, which means that the GPUs become available under license and can be incorporated into their products by third parties.
With the new chips, Imagination is introducing a new multi-core architecture, among other things. The company speaks about ‘decentralised multi-core’. In a kind of whitepaper the company explains that the different cores can work independently of each other, without having to rely on a central chip. “In its simplest form, the different cores can each be seen as separate GPUs, but with the possibility for cores to work together on calculations.” The chips are ‘loosely’ linked together and only share command- in tile bufferlists in shared memory. This design can also be applied in chiplets, Imagination reports.
The IMG-B series also gets one IMGIC along. That is a technique with which images in frame buffers can be compressed. Users can choose from four different compression levels. Imagination speaks of a lossless mode and, for example, an ‘extreme bandwidth-saving mode’. In the latter mode, the file size is reduced by an average of 75 percent.
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The company comes up with four different subseries in the IMG-B series, each of which has its own usecase to have. That’s what Imagination calls the IMG BXE series. Those GPUs are mainly intended for controlling screens and entry-level gaming. The BXE chip supports resolutions from 720p to 8k. Imagination also comes with the BXM series, which is a ‘balance between fill rate in computeperformance ‘. The company states that these chips are suitable for mid-range mobile devices or UI applications such as digital television and set-top boxes, for example.
The IMG BXT is also the most high-end GPU that Imagination offers in this series. The chip will have four cores that together achieve a computing power of 6Tflops. According to a whitepaper, the BXT GPU is produced on a 7nm process and the chip has a clock speed of 1.5GHz. The BXT chip appears to have four cores. The company comes further with an IMG BXS GPU, which is mainly intended for automotive. That chip can be used for infotainment systems, digital cockpits, of human machine interfaces. This GPU also meets the ISO 26262 standardImagination reports.
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