AMD Ryzen 9 3900X vs Ryzen 7 7800X3D
48
out of 100
VS
64
out of 100
We compared two desktop CPUs: the 3.8 GHz AMD Ryzen 9 3900X with 12-cores against the 4.2 GHz Ryzen 7 7800X3D with 8-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.
Review
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score for desktop CPU.
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
Value for money (Beta)
Key Differences
Advantages of AMD Ryzen 9 3900X
- Unlocked multiplier
- Has 4 more physical cores
- More than 6Β° C higher critical temperature
Advantages of AMD Ryzen 7 7800X3D
- Newer - released 3 years and 6 months later
- 56% faster in a single-core Geekbench v6 test - 2657 vs 1699 points
- Has 32 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
- More modern manufacturing process β 5 versus 7 nanometers
- Newer PCI Express version β 5.0
- Includes an integrated GPU Radeon Graphics (Ryzen 7000)
- 9% higher Turbo Boost frequency (5 GHz vs 4.6 GHz)
Test in Benchmarks
Comparing the performance of CPUs across various tasksCinebench
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
| Cinebench 2026 (Single) | - | 575 |
| Cinebench 2026 (Multi) | - | 4363 |
Cinebench Scores (159th and 124th place)
GeekBench v6
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
| File compression | 872.1 MB/sec | 1710 MB/sec |
| Clang compilation | 104.4 Klines/sec | 111.9 Klines/sec |
| HTML 5 Browser | 209.4 pages/sec | 331.1 pages/sec |
| PDF Renderer | 299.9 Mpixels/sec | 399 Mpixels/sec |
| Text processing | 144.4 pages/sec | 266.2 pages/sec |
| Background blur | 41.1 images/sec | 65.8 images/sec |
| Photo processing | 75.2 images/sec | 117 images/sec |
| Ray tracing | 24.4 Mpixels/sec | 22.9 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | 99.4 GOps/sec | 103.2 GOps/sec |
| Floating point math | 58.4 GOps/sec | 60.9 GOps/sec |
| Find prime numbers | 213M Primes/sec | 319M Primes/sec |
| Random string sorting | 48.2M Strings/sec | 46M Strings/sec |
| Data encryption | 28.6 GBytes/sec | 22.3 GBytes/sec |
| Data compression | 448.8 MBytes/sec | 384.2 MBytes/sec |
| Physics | 1782 Frames/sec | 3510 Frames/sec |
| Extended instructions | 29.2B Matrices/sec | 29.1B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 9.4 PPW | 9.3 PPW |
| Geekbench 6 Multi / Watt | 99.7 PPW | 127.7 PPW |
| Passmark CPU Mark / Watt | 309.4 PPW | 285.6 PPW |
| Blender / Watt | 2.66 PPW | 2.22 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
AMD Ryzen 9 3900X
| Date | Benchmark | Result |
|---|---|---|
| π 2026-03-08 (Heliosgt) | Cinebench 2024 | 76 / 1081 |
| π 2026-02-11 (Ethan) | Cinebench 2024 | 69 / 778 |
| π 2026-01-30 (Amara) | Cinebench 2024 | 75 / 986 |
| π 2025-11-16 (LegendryDrifter) | Geekbench 6 CPU | 1821 / 11106 |
| π 2025-11-16 (LegendryDrifter) | Cinebench 2024 | 79 / 1054 |
AMD Ryzen 7 7800X3D
| Date | Benchmark | Result |
|---|---|---|
| π 2026-06-30 (Indyee) | Cinebench 2026 | 571 / 4254 |
| π 2026-06-07 (mNine) | Cinebench 2024 | 1768 / 17329 |
| π 2026-06-03 (Ker_Sandwichman) | Cinebench 2024 | 112 / 1073 |
| π 2026-05-24 (Corey) | Cinebench 2026 | 564 / 4313 |
| π 2026-05-18 (CN Merritt) | Cinebench 2024 | 109 / 1084 |
Specifications
Full technical specification of AMD Ryzen 9 3900X and Ryzen 7 7800X3DGeneral
| Vendor | Amd | Amd |
| Released | July 7, 2019 | January 4, 2023 |
| Type | Desktop | Desktop |
| Instruction Set | x86-64 | x86-64 |
| Codename | - | Zen 4 (Raphael) |
| Integrated GPU | No | Radeon Graphics (Ryzen 7000) |
| Rival Equivalent | - Intel Core i9 9900K | - Intel Core i7 13700K |
| Successor | - AMD Ryzen 9 9900X | - AMD Ryzen 7 9800X3D |
AMD Ryzen CPU ranking (126th and 47th place)
CPU
| P-Cores | 12 | 8 |
| P-Threads | 24 | 16 |
| Base Frequency (P) | 3.8 GHz | 4.2 GHz |
| Turbo Boost Frequency (P) | 4.6 GHz | 5 GHz |
| Total Cores | 12 | 8 |
| Total Threads | 24 | 16 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 38x | 42x |
| L1 Cache | 64K (per core) | 64K (per core) |
| L2 Cache | 512K (per core) | 1MB (per core) |
| L3 Cache | 64MB (shared) | 96MB (shared) |
| Unlocked Multiplier | Yes | No |
Package
| Transistors | 3.8 billions | 11.2 billions |
| Fabrication Process | 7 nm | 5 nm |
| TDP (PL1) | 105 W | 120 W |
| Max. Boost TDP (PL2) | - | 162 W |
| Socket | AM4 | AM5 |
| Peak Temperature | 95Β°C | 89Β°C |
Desktop CPU ranking (121st and 68th place)
iGPU
| Integrated Graphics | - | Radeon Graphics (Ryzen 7000) |
| GPU Base Clock | - | 400 MHz |
| GPU Boost Clock | - | 2200 MHz |
| Shading Units | - | 128 |
| TMUs | - | 8 |
| ROPs | - | 4 |
| Execution Units | - | 2 |
| TGP | - | 15 W |
iGPU FLOPS
Memory Support
| Memory Types | - DDR4-3200 | - DDR5-5200 |
| Max. Memory Size | 128 GB | 128 GB |
| Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | 47.68 GB/s | - |
| ECC Support | Yes | Yes |
Misc
| Official Site | AMD Ryzen 9 3900X official page | AMD Ryzen 7 7800X3D official page |
| PCI Express Version | 4.0 | 5.0 |
| PCI Express Lanes | 16 | 28 |
Further details
Notes on Ryzen 7 7800X3D:
- ECC requires mobo support.
Cast your vote
Total votes: 33