Ryzen 7 8840U vs FX-770K
Aggregate performance score
Ryzen 7 8840U outperforms FX-770K by a whopping 638% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2201 | 629 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Power efficiency | 2.97 | 50.89 |
| Designer | AMD | AMD |
| Manufacturer | GlobalFoundries | TSMC |
| Architecture codename | Kaveri (2014−2015) | Hawk Point-U (Zen 4) (2023−2025) |
| Release date | December 2014 (10 years ago) | 6 December 2023 (1 year ago) |
Detailed specifications
FX-770K 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 cores | 4 (Quad-Core) | 8 (Octa-Core) |
| Threads | 4 | 16 |
| Base clock speed | 3.5 GHz | 3.3 GHz |
| Boost clock speed | 3.9 GHz | 5.1 GHz |
| L1 cache | 256K | 64 KB (per core) |
| L2 cache | 4 MB | 1 MB (per core) |
| L3 cache | no data | 16 MB (shared) |
| Chip lithography | 28 nm | 4 nm |
| Die size | 245 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 2,411 million | 25,000 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on FX-770K 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 configuration | 1 | 1 |
| Socket | FM2+ | FP8 |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by FX-770K and Ryzen 7 8840U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by FX-770K and Ryzen 7 8840U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by FX-770K and Ryzen 7 8840U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-2133 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 780M ( - 2700 MHz) |
Peripherals
Specifications and connection of peripherals supported by FX-770K and Ryzen 7 8840U.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 16 | 20 |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 1.80 | 13.29 |
| Physical cores | 4 | 8 |
| Threads | 4 | 16 |
| Chip lithography | 28 nm | 4 nm |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Ryzen 7 8840U has a 638.3% higher aggregate performance score, 100% more physical cores and 300% more threads, a 600% more advanced lithography process, and 132.1% lower power consumption.
The AMD Ryzen 7 8840U is our recommended choice as it beats the AMD FX-770K in performance tests.
Note that FX-770K is a desktop processor while Ryzen 7 8840U is a notebook one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
