AMD Ryzen 9 7900X3D vs AMD Ryzen 9 7845HX

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CPU comparison with benchmarks


AMD Ryzen 9 7900X3D CPU1 vs CPU2 AMD Ryzen 9 7845HX
AMD Ryzen 9 7900X3D AMD Ryzen 9 7845HX

CPU comparison

In this CPU comparison, we compare the AMD Ryzen 9 7900X3D and the AMD Ryzen 9 7845HX and use benchmarks to check which processor is faster.

We compare the AMD Ryzen 9 7900X3D 12 core processor released in Q1/2023 with the AMD Ryzen 9 7845HX which has 12 CPU cores and was introduced in Q1/2023.
AMD Ryzen 9 (34) Family AMD Ryzen 9 (34)
AMD Ryzen 7000 (14) CPU group AMD Ryzen 7045 (6)
6 Generation 6
Raphael (Zen 4) Architecture Dragon Range (Zen 4)
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Ryzen 9 7900X3D is a 12 core processor with a clock frequency of 4.40 GHz (5.60 GHz). The processor can compute 24 threads at the same time. The AMD Ryzen 9 7845HX clocks with 3.00 GHz (5.20 GHz), has 12 CPU cores and can calculate 24 threads in parallel.

AMD Ryzen 9 7900X3D Characteristic AMD Ryzen 9 7845HX
12 Cores 12
24 Threads 24
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? Yes
4.40 GHz Frequency 3.00 GHz
5.60 GHz Turbo Frequency (1 Core) 5.20 GHz
5.20 GHz Turbo Frequency (All Cores) --

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 Ryzen 9 7900X3D Characteristic AMD Ryzen 9 7845HX
-- 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.

AMD Radeon Graphics (Raphael) GPU AMD Radeon 610M
0.40 GHz GPU frequency 0.40 GHz
2.20 GHz GPU (Turbo) 2.20 GHz
9 GPU Generation 9
5 nm Technology 6 nm
3 Max. displays 3
2 Compute units 2
128 Shader 128
No Hardware Raytracing Yes
No Frame Generation No
8 GB Max. GPU Memory 8 GB
12 DirectX Version 12

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.

AMD Radeon Graphics (Raphael) GPU AMD Radeon 610M
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode / Encode
No Codec AV1 Decode
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 9 7900X3D, while the AMD Ryzen 9 7845HX supports a maximum of 128 GB of memory with a maximum memory bandwidth of 83.2 GB/s enabled.

AMD Ryzen 9 7900X3D Characteristic AMD Ryzen 9 7845HX
DDR5-5200 Memory DDR5-5200
128 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
83.2 GB/s Max. Bandwidth 83.2 GB/s
Yes ECC Yes
12.00 MB L2 Cache 12.00 MB
128.00 MB L3 Cache 64.00 MB
5.0 PCIe version 5.0
24 PCIe lanes 28
94.5 GB/s PCIe Bandwidth 110.3 GB/s

Thermal Management

The AMD Ryzen 9 7900X3D has a TDP of 120 W. The TDP of the AMD Ryzen 9 7845HX is 55 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen 9 7900X3D Characteristic AMD Ryzen 9 7845HX
120 W TDP (PL1 / PBP) 55 W
162 W TDP (PL2) --
-- TDP up 75 W
-- TDP down 45 W
89 °C Tjunction max. 100 °C

Technical details

The AMD Ryzen 9 7900X3D has 140.00 MB cache and is manufactured in 5 nm. The cache of AMD Ryzen 9 7845HX is at 76.00 MB. The processor is manufactured in 5 nm.

AMD Ryzen 9 7900X3D Characteristic AMD Ryzen 9 7845HX
5 nm Technology 5 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
AM5 (LGA 1718) Socket FL1
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2023 Release date Q1/2023
-- Release price --
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Rate these processors

Here you can rate the AMD Ryzen 9 7900X3D to help other visitors make their purchasing decisions. The average rating is 4.4 stars (5 ratings). Rate now:
Here you can rate the AMD Ryzen 9 7845HX 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 3 CPU benchmarks
⌀ Multi core performance in 4 CPU benchmarks

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.
AMD Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.60 GHz
2039 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 5.20 GHz
1859 (91%)

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.
AMD Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.20 GHz
27084 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 3.00 GHz
26654 (98%)

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 Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.60 GHz
2235 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 5.20 GHz
2052 (92%)

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 Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.20 GHz
20400 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 3.00 GHz
16789 (82%)

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 Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.60 GHz
2896 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 5.20 GHz
2645 (91%)

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 Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.20 GHz
17857 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 3.00 GHz
13667 (77%)

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.
AMD Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
AMD Radeon Graphics (Raphael) @ 2.20 GHz
563 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
AMD Radeon 610M @ 2.20 GHz
443 (79%)

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 Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.20 GHz
51275 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 3.00 GHz
46864 (91%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
AMD Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
27,084 CB R23 MC @ 115 W
236 (90%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
26,654 CB R23 MC @ 102 W
261 (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.
AMD Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.60 GHz
122 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 5.20 GHz
0 (0%)

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.
AMD Ryzen 9 7900X3D AMD Ryzen 9 7900X3D
12C 24T @ 5.60 GHz
1596 (100%)
AMD Ryzen 9 7845HX AMD Ryzen 9 7845HX
12C 24T @ 5.20 GHz
0 (0%)

Devices using this processor

AMD Ryzen 9 7900X3D AMD Ryzen 9 7845HX
Unknown Unknown

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