Ryzen 7 7840S: specs and benchmarks
Aggregate performance score
Ryzen 7 7840S provides good benchmark performance at 15.30% of a leader's which is a 96-core EPYC 9655P.
Summary
AMD started Ryzen 7 7840S sales 5 January 2023. This is a Phoenix-HS (Zen 4) architecture notebook processor primarily aimed at office systems. It has 8 cores and 16 threads, and is based on 4 nm manufacturing technology, with a maximum frequency of 5100 MHz and a locked multiplier.
Compatibility-wise, this is FP7/FP7r2/FP8 processor with a TDP of 35 Watt. It supports DDR5 memory.
Primary details
Ryzen 7 7840S processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 452 | |
| Place by popularity | not in top-100 | |
| Market segment | Laptop | |
| Series | Phoenix (Zen 4, Ryzen 7040) | |
| Power efficiency | 41.37 | of 100.00 (Core Ultra 7 164U) |
| Architecture codename | Phoenix-HS (Zen 4) (2023) | |
| Release date | 5 January 2023 (1 year ago) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 8 (Octa-Core) | |
| Threads | 16 | |
| Base clock speed | 3.8 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 5.1 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 512 KB | of 80 KB (EPYC 9965) |
| L2 cache | 8 MB | of 2 MB (Xeon 6980P) |
| L3 cache | 16 MB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 4 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 178 mm2 | |
| Maximum core temperature | 100 °C | of 110 °C (Atom x7-E3950) |
| 64 bit support | + | |
| Windows 11 compatibility | + |
Compatibility
Information on Ryzen 7 7840S compatibility with other computer components and devices: 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 | |
| Power consumption (TDP) | 35 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Technologies and extensions
Technological capabilities and additional instructions supported by Ryzen 7 7840S. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 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 | |
| AES-NI | + | |
| FMA | + | |
| AVX | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Ryzen 7 7840S's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR5 |
Graphics specifications
General parameters of a GPU integrated into Ryzen 7 7840S.
| Integrated graphics card | AMD Radeon 780M ( - 2700 MHz) |
Benchmark performance
Single-core and multi-core benchmark results of Ryzen 7 7840S. Overall benchmark performance 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.
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.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
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.
Cinebench 11.5 64-bit single-core
Cinebench R11.5 is an old benchmark 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 loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.
TrueCrypt AES
TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.
WinRAR 4.0
WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.
Geekbench 5.5 Multi-Core
Blender(-)
Geekbench 5.5 Single-Core
7-Zip Single
7-Zip
WebXPRT 3
Send your test results of Ryzen 7 7840S.
Intel equivalent
According to our data, the closest Intel alternative to Ryzen 7 7840S is Core i5-12600HX, which is slower by 1% and lower by 5 positions in our ranking.
Here are some closest Intel rivals to Ryzen 7 7840S:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Ryzen 7 7840S, according to our PC configuration statistics.
These are the fastest graphics cards for Ryzen 7 7840S in our user configuration statistics. There is a total of 37 configurations using Ryzen 7 7840S in our database.
