Intel Core i5-3450S vs AMD Ryzen 9 3900XT

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CPU comparison with benchmarks


Intel Core i5-3450S CPU1 vs CPU2 AMD Ryzen 9 3900XT
Intel Core i5-3450S AMD Ryzen 9 3900XT

CPU comparison

In this CPU comparison, we compare the Intel Core i5-3450S and the AMD Ryzen 9 3900XT and use benchmarks to check which processor is faster.

We compare the Intel Core i5-3450S 4 core processor released in Q2/2012 with the AMD Ryzen 9 3900XT which has 12 CPU cores and was introduced in Q2/2020.
Intel Core i5 (331) Family AMD Ryzen 9 (35)
Intel Core i 3000 (31) CPU group AMD Ryzen 3000 (15)
3 Generation 3
Ivy Bridge S Architecture Matisse (Zen 2)
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i5-3450S is a 4 core processor with a clock frequency of 2.80 GHz (3.50 GHz). The processor can compute 4 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.

Intel Core i5-3450S Characteristic AMD Ryzen 9 3900XT
4 Cores 12
4 Threads 24
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
2.80 GHz Frequency 4.10 GHz
3.50 GHz Turbo Frequency (1 Core) 4.70 GHz
-- Turbo Frequency (All Cores) 4.60 GHz

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.

Intel Core i5-3450S 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.

Intel HD Graphics 2500 GPU no iGPU
0.65 GHz GPU frequency --
1.10 GHz GPU (Turbo) --
7 GPU Generation --
22 nm Technology
3 Max. displays
6 Compute units --
48 Shader --
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory --
11.0 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.

Intel HD Graphics 2500 GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode Codec JPEG No

Memory & PCIe

Up to 32 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i5-3450S, 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.

Intel Core i5-3450S Characteristic AMD Ryzen 9 3900XT
DDR3-1600 Memory DDR4-3200
32 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 51.2 GB/s
No ECC Yes
-- L2 Cache --
6.00 MB L3 Cache 64.00 MB
3.0 PCIe version 4.0
16 PCIe lanes 20
15.8 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The Intel Core i5-3450S has a TDP of 65 W. 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.

Intel Core i5-3450S Characteristic AMD Ryzen 9 3900XT
65 W TDP (PL1 / PBP) 105 W
-- TDP (PL2) 142 W
-- TDP up --
-- TDP down --
-- Tjunction max. 95 °C

Technical details

The Intel Core i5-3450S has 6.00 MB cache and is manufactured in 22 nm. The cache of AMD Ryzen 9 3900XT is at 64.00 MB. The processor is manufactured in 7 nm.

Intel Core i5-3450S Characteristic AMD Ryzen 9 3900XT
22 nm Technology 7 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
LGA 1155 Socket AM4 (PGA 1331)
VT-x, VT-x EPT Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q2/2012 Release date Q2/2020
195 $ Release price --
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i5-3450S (47%)
AMD Ryzen 9 3900XT (100%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Core i5-3450S (17%)
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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 GHz
745 (53%)
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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 2.80 GHz
2410 (19%)
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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 GHz
691 (40%)
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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 2.80 GHz
1902 (18%)
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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 2.80 GHz
4350 (13%)
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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 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.
Intel Core i5-3450S Intel Core i5-3450S
Intel HD Graphics 2500 @ 1.10 GHz
106 (100%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
@ 0.00 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 3.50 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.
Intel Core i5-3450S Intel Core i5-3450S
4C 4T @ 2.80 GHz
0 (0%)
AMD Ryzen 9 3900XT AMD Ryzen 9 3900XT
12C 24T @ 4.60 GHz
3192 (100%)

Devices using this processor

Intel Core i5-3450S AMD Ryzen 9 3900XT
Unknown Unknown

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