Qualcomm Snapdragon 845 vs AMD Ryzen 9 3900XT

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CPU comparison with benchmarks


Qualcomm Snapdragon 845 CPU1 vs CPU2 AMD Ryzen 9 3900XT
Qualcomm Snapdragon 845 AMD Ryzen 9 3900XT

CPU comparison

In this CPU comparison, we compare the Qualcomm Snapdragon 845 and the AMD Ryzen 9 3900XT and use benchmarks to check which processor is faster.

We compare the Qualcomm Snapdragon 845 8 core processor released in Q1/2018 with the AMD Ryzen 9 3900XT which has 12 CPU cores and was introduced in Q2/2020.
Qualcomm Snapdragon (102) Family AMD Ryzen 9 (35)
Qualcomm Snapdragon 845/850 (2) CPU group AMD Ryzen 3000 (15)
5 Generation 3
Kryo 385 Architecture Matisse (Zen 2)
Mobile Segment Desktop / Server
Qualcomm Snapdragon 835 Predecessor --
Qualcomm Snapdragon 855 Successor --

CPU Cores and Base Frequency

The Qualcomm Snapdragon 845 is a 8 core processor with a clock frequency of 2.80 GHz. The processor can compute 8 threads at the same time. The AMD Ryzen 9 3900XT clocks with 4.10 GHz (4.70 GHz), has 12 CPU cores and can calculate 24 threads in parallel.

Qualcomm Snapdragon 845 Characteristic AMD Ryzen 9 3900XT
8 Cores 12
8 Threads 24
hybrid (big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
2.80 GHz
4x Kryo 385 Gold
A-Core 4.10 GHz (4.70 GHz)
1.80 GHz
4x Kryo 385 Silver
B-Core --

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.

Qualcomm Snapdragon 845 Characteristic AMD Ryzen 9 3900XT
-- AI hardware --
-- AI specifications --

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.

Qualcomm Adreno 630 GPU no iGPU
0.70 GHz GPU frequency --
-- GPU (Turbo) --
4 GPU Generation --
10 nm Technology
2 Max. displays
-- Compute units --
256 Shader --
No Hardware Raytracing No
No Frame Generation No
8 GB Max. GPU Memory --
11 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 630 GPU no iGPU
Decode Codec h265 / HEVC (8 bit) No
Decode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode Codec VP9 No
Decode Codec VP8 No
No Codec AV1 No
Decode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

Up to 10 GB of memory in a maximum of 4 memory channels is supported by the Qualcomm Snapdragon 845, while the AMD Ryzen 9 3900XT supports a maximum of 128 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.

Qualcomm Snapdragon 845 Characteristic AMD Ryzen 9 3900XT
LPDDR4X-3733 Memory DDR4-3200
10 GB Max. Memory 128 GB
4 (Quad Channel) Memory channels 2 (Dual Channel)
52.0 GB/s Max. Bandwidth 51.2 GB/s
No ECC Yes
1.50 MB L2 Cache --
2.00 MB L3 Cache 64.00 MB
-- PCIe version 4.0
-- PCIe lanes 20
-- PCIe Bandwidth 39.4 GB/s

Thermal Management

The Qualcomm Snapdragon 845 has a TDP of --. The TDP of the AMD Ryzen 9 3900XT is 105 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Qualcomm Snapdragon 845 Characteristic AMD Ryzen 9 3900XT
-- TDP (PL1 / PBP) 105 W
-- TDP (PL2) 142 W
-- TDP up --
-- TDP down --
-- Tjunction max. 95 °C

Technical details

The Qualcomm Snapdragon 845 has 3.50 MB cache and is manufactured in 10 nm. The cache of AMD Ryzen 9 3900XT is at 64.00 MB. The processor is manufactured in 7 nm.

Qualcomm Snapdragon 845 Characteristic AMD Ryzen 9 3900XT
10 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 AM4 (PGA 1331)
None Virtualization AMD-V, SVM
No AES-NI Yes
Android Operating systems Windows 10, Windows 11, Linux
Q1/2018 Release date Q2/2020
-- Release price --
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Rate these processors

Here you can rate the Qualcomm Snapdragon 845 to help other visitors make their purchasing decisions. The average rating is 4.2 stars (10 ratings). Rate now:
Here you can rate the AMD Ryzen 9 3900XT to help other visitors make their purchasing decisions. The average rating is 5.0 stars (3 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 845 (34%)
AMD Ryzen 9 3900XT (100%)
⌀ Multi core performance in 3 CPU benchmarks
Qualcomm Snapdragon 845 (15%)
AMD Ryzen 9 3900XT (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
504 (36%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
1414 (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
2165 (17%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
12974 (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
552 (32%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
1719 (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
2022 (19%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
10689 (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
3276 (10%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
32790 (100%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Qualcomm Snapdragon 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
78 (100%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Qualcomm Snapdragon 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
1074 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
1354 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
18511 (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
539 (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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
7244 (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 845 Qualcomm Snapdragon 845
Qualcomm Adreno 630 @ 0.70 GHz
737 (100%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
@ 0.00 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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
361498 (100%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.10 GHz
0 (0%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Qualcomm Snapdragon 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.10 GHz
8118 (100%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.70 GHz
219 (100%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 845 Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
3192 (100%)

Devices using this processor

Qualcomm Snapdragon 845 AMD Ryzen 9 3900XT
OnePlus 6
OnePlus 6T
Vivo NEX S
Asus Zenfone 5z
Razer Phone 2
Asus ROG Phone
Sony Xperia XZ2
Unknown

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