Follow us
Share link
Submit benchmark
VS
Qualcomm Snapdragon 855 Plus vs AMD RX-421BD
Last updated:
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
iGPU - FP32 Performance (Single-precision GFLOPS)
Qualcomm Adreno 640
AMD RX-421BD
79 %
AMD Radeon R7 - 512 (Merlin Falcon)
More benchmarks
Specifications
At a glance
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| Family | Qualcomm Snapdragon (105) | AMD R (6) |
| CPU group | Qualcomm Snapdragon 855/860 (3) | AMD RX 1st Gen. (6) |
| Architecture | Kryo 485 | Merlin Falcon (Excavator) |
| Technology | 7 nm | 28 nm |
| Segment | Smartphone / Tablet | Notebook |
| Socket | FP4 | |
| Predecessor | ||
| Successor | Qualcomm Snapdragon 860 |
CPU Cores and Base Frequency
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| CPU Cores / Threads | 8 / 8 | 4 / 4 |
| Hyperthreading / SMT | ✗ | ✗ |
| Core architecture | hybrid (Prime / big.LITTLE) | normal |
| Core Cluster 1: | 1x Kryo 485 Prime 2.96 GHz |
4x 2.10 - 3.40 GHz |
| Core Cluster 2: | 3x Kryo 485 Gold 2.42 GHz |
|
| Core Cluster 3: | 4x Kryo 485 Silver 1.80 GHz |
|
| L2-Cache | 2.00 MB | 2.00 MB |
| L3-Cache | 3.00 MB | |
| Overclocking | ✗ | ✗ |
Integrated graphics (iGPU)
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| GPU name | Qualcomm Adreno 640 | AMD Radeon R7 - 512 (Merlin Falcon) |
| GPU frequency | 0.25 - 0.68 GHz | 0.80 GHz |
| CUs / Shader | 4 / 384 | 8 / 512 |
| Raytracing | ✗ | ✗ |
| Max. displays | 1 | 3 |
| Max. GPU Memory | 4 GB | 2 GB |
| Technology | 7 nm | 28 |
| Release date | Q1/2019 | 2015 |
NPU AI performance
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| AI hardware | Qualcomm AI engine | |
| AI specifications | Hexagon 690 @ 7 TOPS | |
| NPU + CPU + iGPU |
Memory & PCIe
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| Memory | LPDDR4X-4266 (34.1 GB/s) | DDR4-2400 (38.4 GB/s) DDR3-2133 (34.2 GB/s) |
| Max. Memory | 12 GB | |
| Memory channels | 4 | 2 |
| ECC | No | Yes |
| PCIe | 3.0 x 12 | |
| PCIe Bandwidth | 11.8 GB/s |
Thermal Management
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| TDP | 35 W | |
| TDP (PL2) | ||
| TDP up | ||
| TDP down | 12 W | |
| T. junction max. | 90 °C |
Technical details
|
Wischen
|
Qualcomm Snapdragon 855 Plus | AMD RX-421BD |
|---|---|---|
| Chip design | Chiplet | Unknown |
| AES-NI | ✗ | ✓ |
| Operating systems | Android | |
| Instruction set | Armv8-A (64 bit) | x86-64 (64 bit) |
| ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 | |
| Release date | Q4/2018 | Q4/2015 |
| Release price | ||
| Documents | Technical data sheet |
User Reviews
Your rating
Here you can rate one or both of the processors. The average rating of Qualcomm Snapdragon 855 Plus is 4.8 stars (9 ratings), while AMD RX-421BD has received 0 stars (0 ratings).
Click on the stars to rate one or both processors.
Most popular CPUs in both categories
1
Apple M5 Max (18-CPU 32-GPU)
18C / 18T · 4.61 GHz
2
Apple M5 Max (18-CPU 40-GPU)
18C / 18T · 4.61 GHz
3
Apple M2 Ultra (76-GPU)
24C / 24T · 3.50 GHz
4
Apple M1 Ultra (64-GPU)
20C / 20T · 3.20 GHz
5
Apple M1 Ultra (48-GPU)
20C / 20T · 3.20 GHz
6
Apple M2 Ultra (60-GPU)
24C / 24T · 3.50 GHz
7
Apple M4 (8-CPU)
8C / 8T · 4.46 GHz
8
Qualcomm Snapdragon 855 Plus
8C / 8T · 0.00 GHz
9
AMD RX-421BD
4C / 4T · 3.40 GHz
Popular Comparisons
