Snapdragon 4 Gen2: Analysis and Comparison

The latest news is that Qualcomm has officially released the second-generation Snapdragon 4 mobile platform (Snapdragon 4 Gen 2) to users, which not only brings new technology, higher frequency, faster memory and storage to entry-level smartphones, but also satisfies users The need for a high-quality mobile experience.

Compared with the first-generation Snapdragon 4 released in September last year, Qualcomm has upgraded the manufacturing process from TSMC's 6nm to Samsung's 4nm this time - the second-generation Snapdragon 8, the second-generation Snapdragon 7+, and the first-generation Snapdragon 6 are also 4nm. The following table will compare the differences between Snapdragon 4 Gen 2 and Snapdragon 4 Gen 1 and Snapdragon 480 in detail

Qualcomm Snapdragon 4 Series comparison

Soc	Snapdragon 4 Gen 2(SM4450)	Snapdragon 4 Gen l(SM4375)	Snapdragon 480(SM4350)
CPU	2x CA78 @ 2.2GHz 6x CA55 @ 2.0GHz	2x CA78 @ 2.0GHz 6x CA55 @ 1.8GHz	2x CA76 @ 2.0GHz 6x CA55 @ 1.8GHz
GPU	Adreno	Adreno	Adreno 619
DSP	Hexagon	Hexagon	Hexagon 686
ISP/ Camera	Spectra (2x 12bit) 1x 108MP or 32MP with ZSL or 16+16MP with ZSL	Spectra (3x 12-bit) 1x 108MP or 32MP with ZL or 25+13MP with ZSL or 3x 13MP with ZSL	Spectra 345(3x 12-bit) 1x 64MP or 25+13MP or 3x 13MP
Encode/ Decode	1080p60 H.264.H.265.VP9(Decode-Only)
Memory	2x 16-bit @ 3200MHZ LPDDR5X 25.6GB/s or 2x 16-bit @ 2133MHz LPDDR4X 17.0GB/s	2x 16-bit @ 2133MHz LPDDR4X 17.0GB/s	2x 16-bit @ 2133MHz LPDDR4X 17.0GB/s
Storage	UFS 3.1 (2 lane)	UFS 2.2, eMMC 5.1	UFS 2.2, eMMC 5.1
Integrated Modem	X61 Integrated LTE DL = 800Mbps UL = 210Mbps 5G NR Sub-6 (100MHz) DL = 2500Mbps UL= 900Mbps	X51 Integrated LTE DL = 800Mbps UL = 210Mbps 5G NR Sub-6 + mmWave (100MHz) DL = 2500Mbps UL= 900Mbps	X51 Integrated LTE DL = 800Mbps UL = 210Mbps 5G NR Sub-6 + mmWave (100 + 200MHz) DL = 2500Mbps UL=660Mbps
Wi-Fi/BT	Wi-Fi 5 (2x2) Bluetooth 5.1	Wi-Fi 5 (2x2) Bluetooth 5.2	Wi-Fi 5 (2x2) Bluetooth 5.1
Mfc. Process	Samsung 4nm	TSMC 6nm	Samsung 8nm LPP

The CPU part is still dual-core A78 and six-core A55, but the frequency is increased from 2.0+1.8GHz to 2.2+2.0GHz.

Interestingly, the first-generation Snapdragon 6 is also a combination of A78 and A55. It is just a quad-core plus quad-core, and the frequency is 2.2GHz and 1.8GHz, which means that the small core of the second-generation Snapdragon 4 is even more powerful than the first-generation Snapdragon 6. faster.

However, it is not clear whether the Adreno GPU has been upgraded.

In terms of video, the multi-camera temporal filter (MCTF) was introduced for the first time in the Snapdragon 4 series, which can perform high-quality noise reduction on video, but the three 12bit Spectra ISPs have been reduced to two, which may be due to the fact that entry-level phones do not need too much Strong photoshoot.

It still supports a single 108-megapixel lens or a 32-megapixel lens ZSL with zero delay, and the dual camera is changed from 25 million + 13 million pixels to 16 million + 16 million pixels, and no longer supports three 13 million-pixel lenses.

There is no significant change in multimedia. It supports 120fps FHD+ high-resolution and high-resolution display, supports 1080p H.264/H.265/VP9 video decoding, and 1080p H.264/H.265 video encoding.

AI has brought a number of new enhanced features, such as AI-based low-light shooting, which can obtain sharp and detailed images in dim environments, such as AI-enhanced background noise cancellation, which can also be used in work or densely populated environments. Get clear voice and video calls.

In addition to continuing to support LPDDR4X-2133 memory, LPDDR5X-3200 was added to the Snapdragon 4 series for the first time, with a bandwidth of 25.6GB/s. The storage was finally upgraded from UFS 2.2 to UFS 3.1, and the ancient eMMC 5.1 was cancelled.

In terms of links, the baseband has been upgraded from Snapdragon X51 to Snapdragon X61, which supports the 5G R16 standard, but the network speed has not changed. 5G is still 2500Mbps for download and 900Mbps for upload, and 4G is still 800Mbps for download and 210Mbps for upload, and the millimeter wave frequency band has been removed.

The strange thing is that the Bluetooth version has been regressed from 5.2 to 5.1, so that there is no Bluetooth LE Audio. I don't know why.

The second-generation Snapdragon 4 mobile phone is expected to be launched in the second half of this year, and will be mainly used in low-end and mid-range mobile phones.