Qualcomm reveals details about Snapdragon 855-soc

Dec

6

2018

Qualcomm has revealed the details of his Snapdragon 855-soc. According to the chip designer, the new soc by the X24 modem is able to achieve high 4g speeds. Furthermore, the performance in the field of gaming and ai has improved considerably, claims the company.

Qualcomm has let Samsung unveil the recently unveiled Snapdragon 855 on a 7nm process, according to the American processor designer . The company mentions the Kryo 485 processor cores, which, compared to the previous release of Snapdragon 845 , which was unveiled in December last year, should enable up to 45 percent better performance. Qualcomm uses 845 DynamIQ instead of big.Little, just like the Snapdragon.

It is a 64-bit configuration with a so-called prime-core running at 2.84 GHz, supplemented by three cores with clock speeds of 2.42 GHz. These cores are all derived from ARM’s new Cortex A76. There are also four energy-efficient ARM Cortex A55 cores with a clock speed of 1.8 GHz.
The processor cores share 2MB of L3 cache, which is only possible with DynamIQ. This is unchanged from the predecessor and deviates from the 4MB implementation of Huaweis Kirin 980.

The Adreno 640 GPU would bring an improvement in performance of 20 percent. This gpu according to Qualcomm makes the Snapdragon 855 a lot more suitable for games by making higher performances possible. According to the company, mobile gaming is still on the rise and that is what the gpu wants to respond to. For video playback there is support for the h265 and vp9 codecs, which should also lead to lower energy consumption.

The chip should enable HDG gaming, including support for 10bit colors, the rec2020 color space, Dolby Vision and hdr10 +. This would make it the first soc that makes this possible. Within the framework of the Snapdragon Elite Gaming Experience, there is also support for Vulkan 1.1. The American company reports that the Adreno 640 is capable of supporting devices with screens that go up to 120 images per second. The chip also makes it possible to make 8k resolutions and 360-degree images for vr.

In terms of artificial intelligence, the Snapdragon 855 delivers significant improvements, claims Qualcomm, including the Hexagon 690 processor specifically for ai-tasks. The Kryo cores and the Adreno-gpu are able to work with the Hexagon chip to perform ai tasks. All this should lead to a performance improvement by a factor of three compared to the Snapdragon 845.

For connectivity, the new soc has the X24 modem, which allows speeds up to 2Gbit / s for 4G networks, including support for 4×4 mimo and carrier aggregation at 7x20MHz. The Snapdragon 855 thus offers much higher speeds than its predecessor, which has an X20 modem and did not exceed 1.2Gbit / s. The X50 for 5G connections is not integrated in the new soc, but there is support for this modem. There is also support for the 802.11ax Wi-Fi standard and mmwave Wi-Fi via Qualcomm’s 60GHz platform.

The Snapdragon 855 contains a Spectra 380 as an image signal processor , which is presented by Qualcomm as the world’s first computer vision -isp. This would not only be more economical, but also make it possible to classify objects in real time at 4k resolutions at 60fps.

The first smartphones that get access to the Snapdragon 855 will appear in a few months. OnePlus CEO Peter Lau confirmed to Engadget that the next OnePlus flagship smartphone from next year will contain the Snapdragon 855. In collaboration with the British provider EE, the new OnePlus phone would also become the first 5g phone in Europe.

Snapdragon 855 Snapdragon 845
cpu
1 x Cortex A76 at 2.84 GHz
3 x Cortex A76 at 2.42GHz
4 x Cortex A55 at 1.80GHz

4 x Cortex A75 at 2.8GHz
4 x Cortex A55 at 1.80GHz
gpu Adreno 640 Adreno 630
memory lpddr4x to 34.1GB / s at 2133MHz lpddr4x to 29.9GB / s on 1866MHZ
camera Spectra 380: 1 x 48MP or 2 x 22MP Spectra 280: 1 x 32MP or 2 x 16MP
video encoding 2160p at 60fps, 10bit h.265, hdr10 (+), hlg, Dolby Vision 2160p at 60fps, 10bit h.265
modem Snapdragon X24 to 2Gbit / s Snapdragon X20 to 1.2Gbit / s
production process 7nm 10nm LLP

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