Qualcomm Snapdragon 855 Plus vs AMD EPYC 7742

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CPU comparison with benchmarks


Qualcomm Snapdragon 855 Plus CPU1 vs CPU2 AMD EPYC 7742
Qualcomm Snapdragon 855 Plus AMD EPYC 7742

CPU comparison

Qualcomm Snapdragon 855 Plus or AMD EPYC 7742 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Qualcomm Snapdragon 855 Plus has 8 cores with 8 threads and clocks with a maximum frequency of 2.96 GHz. Up to 12 GB of memory is supported in 4 memory channels. The Qualcomm Snapdragon 855 Plus was released in Q4/2018.

The AMD EPYC 7742 has 64 cores with 128 threads and clocks with a maximum frequency of 3.40 GHz. The CPU supports up to GB of memory in 8 memory channels. The AMD EPYC 7742 was released in Q3/2019.
Qualcomm Snapdragon (104) Family AMD EPYC (129)
Qualcomm Snapdragon 855/860 (3) CPU group AMD EPYC 7002 (24)
6 Generation 2
Kryo 485 Architecture Rome (Zen 2)
Mobile Segment Desktop / Server
-- Predecessor --
Qualcomm Snapdragon 860 Successor --

CPU Cores and Base Frequency

The Qualcomm Snapdragon 855 Plus has 8 CPU cores and can calculate 8 threads in parallel. The clock frequency of the Qualcomm Snapdragon 855 Plus is 2.96 GHz while the AMD EPYC 7742 has 64 CPU cores and 128 threads can calculate simultaneously. The clock frequency of the AMD EPYC 7742 is at 2.25 GHz (3.40 GHz).

Qualcomm Snapdragon 855 Plus Characteristic AMD EPYC 7742
8 Cores 64
8 Threads 128
hybrid (Prime / big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
2.96 GHz
1x Kryo 485 Prime
A-Core 2.25 GHz (3.40 GHz)
2.42 GHz
3x Kryo 485 Gold
B-Core --
1.80 GHz
4x Kryo 485 Silver
C-Core --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Qualcomm Snapdragon 855 Plus Characteristic AMD EPYC 7742
Qualcomm AI engine AI hardware --
Hexagon 690 @ 7 TOPS AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The Qualcomm Snapdragon 855 Plus or AMD EPYC 7742 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Qualcomm Adreno 640 GPU no iGPU
0.25 GHz GPU frequency --
0.68 GHz GPU (Turbo) --
5 GPU Generation --
7 nm Technology
1 Max. displays
4 Compute units --
384 Shader --
No Hardware Raytracing No
No Frame Generation No
4 GB Max. GPU Memory --
12.0 DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Qualcomm Adreno 640 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode / Encode Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The Qualcomm Snapdragon 855 Plus can use up to 12 GB of memory in 4 memory channels. The maximum memory bandwidth is 34.1 GB/s. The AMD EPYC 7742 supports up to GB of memory in 8 memory channels and achieves a memory bandwidth of up to 51.2 GB/s.

Qualcomm Snapdragon 855 Plus Characteristic AMD EPYC 7742
LPDDR4X-4266 Memory DDR4-3200
12 GB Max. Memory
4 (Quad Channel) Memory channels 8 (Octa Channel)
34.1 GB/s Max. Bandwidth 51.2 GB/s
No ECC Yes
2.00 MB L2 Cache --
3.00 MB L3 Cache 256.00 MB
-- PCIe version 4.0
-- PCIe lanes 128
-- PCIe Bandwidth 252.0 GB/s

Thermal Management

The thermal design power (TDP for short) of the Qualcomm Snapdragon 855 Plus is --, while the AMD EPYC 7742 has a TDP of 225 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Qualcomm Snapdragon 855 Plus Characteristic AMD EPYC 7742
-- TDP (PL1 / PBP) 225 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Qualcomm Snapdragon 855 Plus is manufactured in 7 nm and has 5.00 MB cache. The AMD EPYC 7742 is manufactured in 7 nm and has a 256.00 MB cache.

Qualcomm Snapdragon 855 Plus Characteristic AMD EPYC 7742
7 nm Technology 7 nm
Chiplet Chip design Chiplet
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
-- Socket SP3
None Virtualization AMD-V, SVM
No AES-NI Yes
Android Operating systems Windows 10, Linux
Q4/2018 Release date Q3/2019
-- Release price 9000 $
show more data show more data


Rate these processors

Here you can rate the Qualcomm Snapdragon 855 Plus to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the AMD EPYC 7742 to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 855 Plus (74%)
AMD EPYC 7742 (100%)
⌀ Multi core performance in 3 CPU benchmarks
Qualcomm Snapdragon 855 Plus (11%)
AMD EPYC 7742 (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
731 (70%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 3.40 GHz
1050 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
2632 (7%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
37515 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
994 (78%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 3.40 GHz
1278 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
2397 (18%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
13647 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
4389 (7%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
65631 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
0 (0%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 3.40 GHz
398 (100%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
0 (0%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
20644 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
Qualcomm Adreno 640 @ 0.68 GHz
1037 (100%)
AMD EPYC 7742 AMD EPYC 7742
@ 0.00 GHz
0 (0%)

AnTuTu 9 Benchmark

The AnTuTu 9 benchmark is very well suited to measuring the performance of a smartphone. AnTuTu 9 is quite heavy on 3D graphics and can now also use the "Metal" graphics interface. In AnTuTu, memory and UX (user experience) are also tested by simulating browser and app usage. AnTuTu version 9 can compare any ARM CPU running on Android or iOS. Devices may not be directly comparable when benchmarked on different operating systems.

In the AnTuTu 9 benchmark, the single-core performance of a processor is only slightly weighted. The rating is made up of the multi-core performance of the processor, the speed of the working memory, and the performance of the internal graphics.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
558430 (100%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.25 GHz
0 (0%)

AnTuTu 8 Benchmark

The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.

In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
487155 (100%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.25 GHz
0 (0%)

AI performance (NPU)

The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Qualcomm Snapdragon 855 Plus Qualcomm Snapdragon 855 Plus
8C 8T @ 2.96 GHz
7 (100%)
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.25 GHz
0 (0%)

Devices using this processor

Qualcomm Snapdragon 855 Plus AMD EPYC 7742
OnePlus 7T
OnePlus 7T Pro 5G
OnePlus 7 Pro
OnePlus 7T Pro
Xiaomi Redmi K20 Pro Premium Edition
Realme X2 Pro
Unknown

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