Intel Core i9 9900K vs AMD Ryzen 9 3900XT
41
out of 100
VS
48
out of 100
We compared two desktop CPUs: the 3.6 GHz Intel Core i9 9900K with 8-cores against the 3.8 GHz AMD Ryzen 9 3900XT with 12-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 Intel Core i9 9900K
- Includes an integrated GPU Intel UHD Graphics 630
- 6% higher Turbo Boost frequency (5 GHz vs 4.7 GHz)
Advantages of AMD Ryzen 9 3900XT
- Has 48 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
- More modern manufacturing process – 7 versus 14 nanometers
- Has 4 more physical cores
- Newer - released 1 year and 9 months later
- Newer PCI Express version – 4.0
- Around 6.08 GB/s (15%) higher theoretical memory bandwidth
Test in Benchmarks
Comparing the performance of CPUs across various tasksCinebench
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (#145th place)
GeekBench v6
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
| File compression | 545.7 MB/sec | 1040 MB/sec |
| Clang compilation | 67.7 Klines/sec | 111.3 Klines/sec |
| HTML 5 Browser | 175.1 pages/sec | 217.5 pages/sec |
| PDF Renderer | 275.6 Mpixels/sec | 335.3 Mpixels/sec |
| Text processing | 159 pages/sec | 143.6 pages/sec |
| Background blur | 40.4 images/sec | 32.4 images/sec |
| Photo processing | 68.6 images/sec | 74.9 images/sec |
| Ray tracing | 14.5 Mpixels/sec | 26.4 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | 66.1 GOps/sec | 99.5 GOps/sec |
| Floating point math | 41 GOps/sec | 58.4 GOps/sec |
| Find prime numbers | 46M Primes/sec | 212M Primes/sec |
| Random string sorting | 36.1M Strings/sec | 48.1M Strings/sec |
| Data encryption | 6.3 GBytes/sec | 28.6 GBytes/sec |
| Data compression | 282.6 MBytes/sec | 451.3 MBytes/sec |
| Physics | 929 Frames/sec | 1758 Frames/sec |
| Extended instructions | 19B Matrices/sec | 28.5B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 7.4 PPW | 10 PPW |
| Geekbench 6 Multi / Watt | 85.8 PPW | 103.9 PPW |
| Passmark CPU Mark / Watt | 190.1 PPW | 309.2 PPW |
| Blender / Watt | 1.88 PPW | 2.63 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
Intel Core i9 9900K
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-01-01 (Mr Scare) | Cinebench 2024 | 79 / 662 |
| 📘 2025-08-09 (EndOfTheWorld77) | Cinebench 2024 | 78 / 591 |
| 📘 2024-03-28 (Gribbstar) | Cinebench 2024 | 79 / 706 |
AMD Ryzen 9 3900XT
| Date | Benchmark | Result |
|---|---|---|
| 📘 2025-03-15 (mattikatti) | Cinebench 2024 | 74 / 1050 |
Specifications
Full technical specification of Intel Core i9 9900K and AMD Ryzen 9 3900XTGeneral
| Vendor | Intel | Amd |
| Released | October 8, 2018 | July 7, 2020 |
| Type | Desktop | Desktop |
| Instruction Set | x86-64 | x86-64 |
| Codename | Coffee Lake | Zen 2 (Matisse) |
| Model number | i9-9900K | - |
| Integrated GPU | UHD Graphics 630 | No |
| Rival Equivalent | - AMD Ryzen 9 3900X | - Intel Core i9 9900K |
| Successor | - Intel Core Ultra 9 285K | - |
AMD Ryzen CPU ranking (#125th place)
CPU
| P-Cores | 8 | 12 |
| P-Threads | 16 | 24 |
| Base Frequency (P) | 3.6 GHz | 3.8 GHz |
| Turbo Boost Frequency (P) | 5 GHz | 4.7 GHz |
| Total Cores | 8 | 12 |
| Total Threads | 16 | 24 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 36x | 38x |
| Bus Bandwidth | 8 GT/s | - |
| L1 Cache | 64K (per core) | 64K (per core) |
| L2 Cache | 256K (per core) | 512K (per core) |
| L3 Cache | 16MB (shared) | 64MB (shared) |
| Unlocked Multiplier | Yes | Yes |
Package
| Transistors | - | 3.8 billions |
| Fabrication Process | 14 nm | 7 nm |
| TDP (PL1) | 95 W | 105 W |
| Socket | LGA-1151 | AM4 |
| Peak Temperature | 100°C | 95°C |
Desktop CPU ranking (145th and 120th place)
iGPU
| Integrated Graphics | Intel UHD Graphics 630 | - |
| GPU Base Clock | 350 MHz | - |
| GPU Boost Clock | 1200 MHz | - |
| Shading Units | 192 | - |
| TMUs | 24 | - |
| ROPs | 3 | - |
| Execution Units | 24 | - |
| TGP | 15 W | - |
iGPU FLOPS
Memory Support
| Memory Types | - DDR4-2666 | - DDR4-3200 |
| Max. Memory Size | 128 GB | 128 GB |
| Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | 41.6 GB/s | 47.68 GB/s |
| ECC Support | No | Yes |
Misc
| Official Site | Intel Core i9 9900K official page | AMD Ryzen 9 3900XT official page |
| PCI Express Version | 3.0 | 4.0 |
| PCI Express Lanes | 16 | 24 |
Cast your vote
Total votes: 50