Ryzen 7 3780U vs Ryzen 9 3900
Aggregate performance score
Ryzen 9 3900 outperforms Ryzen 7 3780U by a whopping 343% based on our aggregate benchmark results.
Primary details
Comparing Ryzen 9 3900 and Ryzen 7 3780U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 259 | 1259 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 31.85 | no data |
| Market segment | Desktop processor | Laptop |
| Series | AMD Matisse (Ryzen 3000 Desktop) | AMD Ryzen 7 |
| Architecture codename | Matisse (Zen 2) (2019−2020) | Picasso-U (Zen+) |
| Release date | 24 September 2019 (4 years ago) | 6 January 2019 (5 years ago) |
| Current price | $403 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 3900 and Ryzen 7 3780U 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 | 12 (Dodeca-Core) | 4 (Quad-Core) |
| Threads | 24 | 8 |
| Base clock speed | 3.1 GHz | 2.3 GHz |
| Boost clock speed | 4.3 GHz | 4 GHz |
| L1 cache | 64 KB (per core) | 96K (per core) |
| L2 cache | 512 KB (per core) | 512K (per core) |
| L3 cache | 64 MB | 4 MB (shared) |
| Chip lithography | 7 nm | 12 nm |
| Die size | 2x 74 mm2 | 210 mm2 |
| Maximum core temperature | no data | 105 °C |
| Number of transistors | 7,600 million | 4,940 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | Yes | No |
Compatibility
Information on Ryzen 9 3900 and Ryzen 7 3780U 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 | AM4 | FP5 |
| Power consumption (TDP) | 65 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 3900 and Ryzen 7 3780U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2 | DDR4-2400 RAM, PCIe 3, MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA |
| AES-NI | + | + |
| AVX | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 3900 and Ryzen 7 3780U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900 and Ryzen 7 3780U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR4 |
| Maximum memory size | 128 GB | 32 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 51.196 GB/s | 38.397 GB/s |
| ECC memory support | - | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | AMD Radeon RX Vega 11 |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 3900 and Ryzen 7 3780U.
| PCIe version | 4.0 | 3.0 |
| PCI Express lanes | 24 | 12 |
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 3900 outperforms Ryzen 7 3780U by 343% 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 9 3900 outperforms Ryzen 7 3780U by 343% 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 9 3900 outperforms Ryzen 7 3780U by 256% 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 9 3900 outperforms Ryzen 7 3780U by 19% in Cinebench 15 64-bit single-core.
Pros & cons summary
| Performance score | 19.93 | 4.50 |
| Recency | 24 September 2019 | 6 January 2019 |
| Physical cores | 12 | 4 |
| Threads | 24 | 8 |
| Chip lithography | 7 nm | 12 nm |
| Power consumption (TDP) | 65 Watt | 15 Watt |
The Ryzen 9 3900 is our recommended choice as it beats the Ryzen 7 3780U in performance tests.
Note that Ryzen 9 3900 is a desktop processor while Ryzen 7 3780U is a notebook one.
Should you still have questions on choice between Ryzen 9 3900 and Ryzen 7 3780U, ask them in Comments section, and we shall answer.
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