AMD EPYC 7742 vs Qualcomm Snapdragon 678

Last updated:

CPU comparison with benchmarks


AMD EPYC 7742 CPU1 vs CPU2 Qualcomm Snapdragon 678
AMD EPYC 7742 Qualcomm Snapdragon 678

CPU comparison

In this CPU comparison, we compare the AMD EPYC 7742 and the Qualcomm Snapdragon 678 and use benchmarks to check which processor is faster.

We compare the AMD EPYC 7742 64 core processor released in Q3/2019 with the Qualcomm Snapdragon 678 which has 8 CPU cores and was introduced in Q4/2020.
AMD EPYC (129) Family Qualcomm Snapdragon (102)
AMD EPYC 7002 (24) CPU group Qualcomm Snapdragon 675/678 (2)
2 Generation 7
Rome (Zen 2) Architecture Kryo 460
Desktop / Server Segment Mobile
-- Predecessor Qualcomm Snapdragon 675
-- Successor --

CPU Cores and Base Frequency

The AMD EPYC 7742 is a 64 core processor with a clock frequency of 2.25 GHz (3.40 GHz). The processor can compute 128 threads at the same time. The Qualcomm Snapdragon 678 clocks with 2.20 GHz, has 8 CPU cores and can calculate 8 threads in parallel.

AMD EPYC 7742 Characteristic Qualcomm Snapdragon 678
64 Cores 8
128 Threads 8
normal Core architecture hybrid (big.LITTLE)
Yes Hyperthreading No
No Overclocking ? No
2.25 GHz (3.40 GHz) A-Core 2.20 GHz
2x Kryo 460 Gold
-- B-Core 1.70 GHz
6x Kryp 460 Silver

Artificial Intelligence and Machine Learning

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. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

AMD EPYC 7742 Characteristic Qualcomm Snapdragon 678
-- AI hardware Qualcomm AI engine
-- AI specifications Hexagon 685 @ 3 TOPS

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

no iGPU GPU Qualcomm Adreno 612
GPU frequency 0.85 GHz
-- GPU (Turbo) 0.85 GHz
-- GPU Generation 6
Technology 11 nm
Max. displays 0
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version 12.1

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.

no iGPU GPU Qualcomm Adreno 612
No Codec h265 / HEVC (8 bit) Decode
No Codec h265 / HEVC (10 bit) Decode
No Codec h264 Decode / Encode
No Codec VP9 Decode
No Codec VP8 Decode
No Codec AV1 No
No Codec AVC Decode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

Up to GB of memory in a maximum of 8 memory channels is supported by the AMD EPYC 7742, while the Qualcomm Snapdragon 678 supports a maximum of 8 GB of memory with a maximum memory bandwidth of 14.9 GB/s enabled.

AMD EPYC 7742 Characteristic Qualcomm Snapdragon 678
DDR4-3200 Memory LPDDR4X-3733
Max. Memory 8 GB
8 (Octa Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 14.9 GB/s
Yes ECC No
-- L2 Cache --
256.00 MB L3 Cache --
4.0 PCIe version --
128 PCIe lanes --
252.0 GB/s PCIe Bandwidth --

Thermal Management

The AMD EPYC 7742 has a TDP of 225 W. The TDP of the Qualcomm Snapdragon 678 is --. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD EPYC 7742 Characteristic Qualcomm Snapdragon 678
225 W TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD EPYC 7742 has 256.00 MB cache and is manufactured in 7 nm. The cache of Qualcomm Snapdragon 678 is at 0.00 MB. The processor is manufactured in 11 nm.

AMD EPYC 7742 Characteristic Qualcomm Snapdragon 678
7 nm Technology 11 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions --
SP3 Socket --
AMD-V, SVM Virtualization None
Yes AES-NI No
Windows 10, Linux Operating systems Android
Q3/2019 Release date Q4/2020
9000 $ Release price --
show more data show more data


Rate these processors

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:
Here you can rate the Qualcomm Snapdragon 678 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
AMD EPYC 7742 (100%)
Qualcomm Snapdragon 678 (53%)
⌀ Multi core performance in 2 CPU benchmarks
AMD EPYC 7742 (100%)
Qualcomm Snapdragon 678 (8%)

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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 3.40 GHz
1050 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
534 (51%)

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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
37515 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
1553 (4%)

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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 3.40 GHz
1278 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
694 (54%)

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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
13647 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
1489 (11%)

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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 3.40 GHz
398 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
0 (0%)

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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
20644 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.25 GHz
0 (0%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
224586 (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.
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.80 GHz
65631 (100%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
0 (0%)

Performance for Artificial Intelligence (AI) and Machine Learning (ML)

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).
AMD EPYC 7742 AMD EPYC 7742
64C 128T @ 2.25 GHz
0 (0%)
Qualcomm Snapdragon 678 Qualcomm Snapdragon 678
8C 8T @ 2.20 GHz
3 (100%)

Devices using this processor

AMD EPYC 7742 Qualcomm Snapdragon 678
Unknown Xiaomi Redmi Note 10
Motorola Moto G Stylus 2021

Popular comparisons containing this CPUs

1. AMD EPYC 7742AMD Ryzen Threadripper 3990X AMD EPYC 7742 vs AMD Ryzen Threadripper 3990X
2. AMD EPYC 7742Intel Xeon Platinum 9282 AMD EPYC 7742 vs Intel Xeon Platinum 9282
3. AMD EPYC 7742Intel Xeon Platinum 8280 AMD EPYC 7742 vs Intel Xeon Platinum 8280
4. AMD EPYC 7742AMD EPYC 7763 AMD EPYC 7742 vs AMD EPYC 7763
5. AMD EPYC 7742AMD EPYC 7702 AMD EPYC 7742 vs AMD EPYC 7702
6. AMD EPYC 7742AMD Ryzen Threadripper 3970X AMD EPYC 7742 vs AMD Ryzen Threadripper 3970X
7. MediaTek Helio G88Qualcomm Snapdragon 678 MediaTek Helio G88 vs Qualcomm Snapdragon 678
8. Qualcomm Snapdragon 678Qualcomm Snapdragon 680 4G Qualcomm Snapdragon 678 vs Qualcomm Snapdragon 680 4G
9. Qualcomm Snapdragon 678MediaTek Helio G95 Qualcomm Snapdragon 678 vs MediaTek Helio G95
10. AMD EPYC 7742Intel Core i9-9900KF AMD EPYC 7742 vs Intel Core i9-9900KF


back to index