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Qualcomm Snapdragon 8cx

Qualcomm SD 8cx

The Qualcomm Snapdragon 8cx Compute Platform (or SD8cx) is a ARM based SoC for Windows laptops. It integrates a similar CPU part as the Snapdragon 855 (same cores but without the Prime Core feature) and is manufactured in 7nm at TSMC. The 4 Kryo 495 Gold cores are based on the ARM Cortex-A76 architecture (for performance) and clocked at 2.84 GHz under load (no single core Turbo). The 4 Kryo 495 Silver cores are small ARM Cortex-A55 cores for power efficiency and clocked at 1.9 GHz under load. According to Qualcomm, the clock speed should not be reduced under constant load with typical (fanless) cooling. The integrated X24 LTE modem supports up to 2 Gbps download speeds. Furthermore, the SoC integrates ac-Wifi and a dual-channel 32-bit 1866 MHz LPDDR4x memory controller.

The processor performance should be similar to a Intel Core i5 8th gen U-series (e.g. i5-8250U) according to Qualcomm. However, this is only the case for native ARM64 compiled Windows apps which are not that many (in mid 2019). 32 bit applications and games for AMD/Intel run in a rather slow emulation and 65 bit apps wont start at all.

The integrated Adreno 680 graphics card is a beefier version of the Adreno 640 in the Snapdragon 855 and should be twice as fast as the old Adreno 630 (in Windows laptops) and offer a 60% higher efficiency.

The chip is very power efficient as its produced at TSMC in the modern 7 process. Therefore, laptops using the Snapdragon 8cx can be passively cooled (no fan) and should not throttle under constant load.

SeriesQualcomm Snapdragon
CodenameCortex-A76 / A55 (Kryo 495)
Series: Snapdragon Cortex-A76 / A55 (Kryo 495)
Microsoft SQ1 compare3000 MHz8 / 82 MB
» Qualcomm Snapdragon 8cx2840 MHz8 / 82 MB
Clock Rate2840 MHz
Level 3 Cache2 MB
Number of Cores / Threads8 / 8
Manufacturing Technology7 nm
FeaturesX24 LTE Modem, Adreno 680 GPU
GPUQualcomm Adreno 680
64 Bit64 Bit support
Announcement Date12/06/2018
Product Link (external)Qualcomm Snapdragon SD 8cx

Benchmarks

wPrime 2.10 - wPrime 2.0 1024m *
442 s (5%)
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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Reviews for the Qualcomm Snapdragon SD 8cx processor

Lenovo Flex 5G 14-82AK0002US (Qualcomm Adreno 680, 14")
» Lenovo Flex 5G 14-82AK0002US - External Review

Lenovo Yoga C 5G-88YGC801370 (Qualcomm Adreno 680, 14")
» Lenovo Yoga C 5G-88YGC801370 - External Review

Samsung Galaxy Book S (Qualcomm Adreno 680, 13.3")
» Samsung Galaxy Book S Laptop Review: Long battery runtime and under 1 kg - Review
» Samsung Galaxy Book S - External Review
» Samsung Galaxy Book S Hands-on: Extremely light and long battery runtime -
» Samsung's Galaxy Book S is a very good mobile companion with integrated LTE -

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Snapdragon

» Microsoft SQ1
   8x 3 GHz
» Qualcomm Snapdragon 8cx
   8x 2.84 GHz
» Qualcomm Snapdragon 865+ (Plus)
   8x 2.42 GHz - 3.1 GHz
» Qualcomm Snapdragon 865
   8x 2.42 GHz - 2.84 GHz
» Qualcomm Snapdragon 855
   8x 2.84 GHz
» Qualcomm Snapdragon 850
   8x 2.96 GHz
» Qualcomm Snapdragon 845
   8x 2.8 GHz
» Qualcomm Snapdragon 765G
   8x 1.8 GHz - 2.4 GHz
» Qualcomm Snapdragon 765
   8x 1.8 GHz - 2.3 GHz
» Qualcomm Snapdragon 732G
   8x 2.3 GHz
» Qualcomm Snapdragon 730G
   8x 2.2 GHz
» Qualcomm Snapdragon 730
   8x 2.2 GHz
» Qualcomm Snapdragon 720G
   8x 2.3 GHz
» Qualcomm Snapdragon 675
   8x 2 GHz
» Qualcomm Snapdragon 835 (8998)
   8x 2.45 GHz
» Qualcomm Snapdragon 712
   8x 2.3 GHz
» Qualcomm Snapdragon 710
   8x 2.2 GHz
» Qualcomm Snapdragon 670
   8x 2.02 GHz
» Qualcomm Snapdragon 665
   8x 2.2 GHz
» Qualcomm Snapdragon 662
   8x 1.8 GHz - 2 GHz
» Qualcomm Snapdragon 660
   8x 2.2 GHz
» Qualcomm Snapdragon 636
   8x 1.8 GHz
» Qualcomm Snapdragon 632
   8x 1.8 GHz
» Qualcomm Snapdragon 630
   8x 2.2 GHz
» Qualcomm Snapdragon 626
   8x 2.2 GHz
» Qualcomm Snapdragon 625
   8x 2 GHz
» Qualcomm Snapdragon 439
   8x 2 GHz
» Qualcomm Snapdragon 450
   8x 1.8 GHz
» Qualcomm Snapdragon 429
   4x 2 GHz
» Qualcomm Snapdragon 435
   8x 1.4 GHz
» Qualcomm Snapdragon 400 8930AB
   2x 1.7 GHz
» Qualcomm Snapdragon S4 Plus MSM8230
   2x 1.2 GHz
» Qualcomm 205
   2x 1.1 GHz
» Qualcomm Snapdragon S3 MSM8660
   2x 1.7 GHz
» Qualcomm Snapdragon S3 MSM8260
   2x 1.5 GHz
» Qualcomm Snapdragon S2 MSM8255
   1x 1.5 GHz
» Qualcomm Snapdragon S1 MSM7227
   1x 0.6 GHz

Surrounding CPUs

+ Intel Core i7-2760QM
   4x 2.4 GHz - 3.5 GHz
+ Intel Core i5-7287U
   2x 3.3 GHz - 3.7 GHz
+ Intel Core i3-10110U
   2x 2.1 GHz - 4.1 GHz
+ Microsoft SQ1
   8x 3 GHz
+ Intel Core i7-7560U
   2x 2.4 GHz - 3.8 GHz
» Qualcomm Snapdragon 8cx
   8x 2.84 GHz
- Intel Core i3-1110G4
   2x 2.5 GHz - 3.9 GHz
- Intel Core i7-2820QM
   4x 2.3 GHz - 3.4 GHz
- Intel Core i7-3612QM
   4x 2.1 GHz - 3.1 GHz
- Intel Core i7-2720QM
   4x 2.2 GHz - 3.3 GHz
- Intel Core i7-2675QM
   4x 2.2 GHz - 3.1 GHz
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > Qualcomm Snapdragon 8cx SoC
Klaus Hinum (Update: 2019-05-16)