Ryzen 5 3450U vs Ryzen 7 7840S
Aggregate performance score
Ryzen 7 7840S outperforms Ryzen 5 3450U by a whopping 265% based on our aggregate benchmark results.
Primary details
Comparing Ryzen 7 7840S and Ryzen 5 3450U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 398 | 1286 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Phoenix (Zen 4, Ryzen 7040) | AMD Picasso (Ryzen 3000 APU) |
| Architecture codename | Phoenix-HS (Zen 4) | Picasso-U (Zen+) |
| Release date | 5 January 2023 (1 year ago) | 1 May 2020 (4 years ago) |
Detailed specifications
Ryzen 7 7840S and Ryzen 5 3450U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 8 (Octa-Core) | 4 (Quad-Core) |
| Threads | 16 | 8 |
| Base clock speed | 3.8 GHz | 2.1 GHz |
| Boost clock speed | 5.1 GHz | 3.5 GHz |
| L1 cache | 512 KB | 384 KB |
| L2 cache | 8 MB | 2 MB |
| L3 cache | 16 MB | 4 MB |
| Chip lithography | 4 nm | 12 nm |
| Die size | 178 mm2 | no data |
| Maximum core temperature | 100 °C | 105 °C |
| Number of transistors | no data | 4500 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | No | No |
Compatibility
Information on Ryzen 7 7840S and Ryzen 5 3450U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Socket | FP7/FP7r2/FP8 | FP5 |
| Power consumption (TDP) | 35 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 7 7840S and Ryzen 5 3450U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | DDR5-5600/LPDDR5x-7500 RAM (incl. ECC), PCIe 4, Ryzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME | DDR4-2400 RAM, PCIe 3, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | + | + |
| FMA | + | + |
| AVX | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 7 7840S and Ryzen 5 3450U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon 780M | AMD Radeon RX Vega 8 (Ryzen 2000/3000) |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Ryzen 7 7840S outperforms Ryzen 5 3450U by 265% based on our aggregate benchmark results.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
Ryzen 7 7840S outperforms Ryzen 5 3450U by 265% in Passmark.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
Benchmark coverage: 15%
Ryzen 7 7840S outperforms Ryzen 5 3450U by 292% in Cinebench 15 64-bit multi-core.
Cinebench 15 64-bit single-core
Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.
Benchmark coverage: 15%
Ryzen 7 7840S outperforms Ryzen 5 3450U by 99% in Cinebench 15 64-bit single-core.
Pros & cons summary
| Performance score | 15.93 | 4.36 |
| Integrated graphics card | 18.36 | 4.50 |
| Recency | 5 January 2023 | 1 May 2020 |
| Physical cores | 8 | 4 |
| Threads | 16 | 8 |
| Chip lithography | 4 nm | 12 nm |
| Power consumption (TDP) | 35 Watt | 15 Watt |
The Ryzen 7 7840S is our recommended choice as it beats the Ryzen 5 3450U in performance tests.
Should you still have questions on choice between Ryzen 7 7840S and Ryzen 5 3450U, ask them in Comments section, and we shall answer.
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