Ryzen 7 8840U vs Ryzen 9 7900X3D

Aggregate performance score

Ryzen 9 7900X3D
2023
12 cores / 24 threads, 120 Watt
31.73
+111%
Ryzen 7 8840U
2023
8 cores / 16 threads, 28 Watt
15.04

Ryzen 9 7900X3D outperforms Ryzen 7 8840U by a whopping 111% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 7900X3D and Ryzen 7 8840U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking130472
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation49.24no data
Market segmentDesktop processorLaptop
SeriesAMD Ryzen 9no data
Power efficiency25.0150.80
Architecture codenameRaphael (2023−2024)Hawk Point-U (Zen 4) (2023)
Release date4 January 2023 (1 year ago)6 December 2023 (1 year ago)
Launch price (MSRP)$599no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 7900X3D and Ryzen 7 8840U 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 cores12 (Dodeca-Core)8 (Octa-Core)
Threads2416
Base clock speed4.4 GHz3.3 GHz
Boost clock speed5.6 GHz5.1 GHz
L1 cache64K (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache128 MB (shared)16 MB (shared)
Chip lithography5 nm, 6 nm4 nm
Die size2x 71 mm2178 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)47 °Cno data
Number of transistors13,140 million25,000 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 7900X3D and Ryzen 7 8840U 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.

Number of CPUs in a configuration11
SocketAM5FP8
Power consumption (TDP)120 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7900X3D and Ryzen 7 8840U. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataRyzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7900X3D and Ryzen 7 8840U are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7900X3D and Ryzen 7 8840U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5-5200DDR5
Maximum memory size128 GBno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon GraphicsAMD Radeon 780M ( - 2700 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7900X3D and Ryzen 7 8840U.

PCIe version5.04.0
PCI Express lanes2420

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 9 7900X3D 31.73
+111%
Ryzen 7 8840U 15.04

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.

Ryzen 9 7900X3D 50409
+111%
Ryzen 7 8840U 23884

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Ryzen 9 7900X3D 2858
+29.2%
Ryzen 7 8840U 2212

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Ryzen 9 7900X3D 17584
+87.3%
Ryzen 7 8840U 9390

Gaming performance

Pros & cons summary


Performance score 31.73 15.04
Integrated graphics card 1.98 18.32
Recency 4 January 2023 6 December 2023
Physical cores 12 8
Threads 24 16
Chip lithography 5 nm 4 nm
Power consumption (TDP) 120 Watt 28 Watt

Ryzen 9 7900X3D has a 111% higher aggregate performance score, and 50% more physical cores and 50% more threads.

Ryzen 7 8840U, on the other hand, has 825.3% faster integrated GPU, an age advantage of 11 months, a 25% more advanced lithography process, and 328.6% lower power consumption.

The Ryzen 9 7900X3D is our recommended choice as it beats the Ryzen 7 8840U in performance tests.

Note that Ryzen 9 7900X3D is a desktop processor while Ryzen 7 8840U is a notebook one.


Should you still have questions on choice between Ryzen 9 7900X3D and Ryzen 7 8840U, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD Ryzen 9 7900X3D
Ryzen 9 7900X3D
AMD Ryzen 7 8840U
Ryzen 7 8840U

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.2 429 votes

Rate Ryzen 9 7900X3D on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.2 175 votes

Rate Ryzen 7 8840U on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Ryzen 9 7900X3D or Ryzen 7 8840U, agree or disagree with our judgements, or report an error or mismatch.