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Qualcomm Snapdragon 820 Lite | AMD RX-421BD | |
CPU comparisonQualcomm Snapdragon 820 Lite or AMD RX-421BD - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Qualcomm Snapdragon 820 Lite has 4 cores with 4 threads and clocks with a maximum frequency of 1.80 GHz. Up to 8 GB of memory is supported in 4 memory channels. The Qualcomm Snapdragon 820 Lite was released in Q1/2016. The AMD RX-421BD has 4 cores with 4 threads and clocks with a maximum frequency of 3.40 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD RX-421BD was released in Q4/2015. |
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Qualcomm Snapdragon (104) | Family | AMD R (6) |
Qualcomm Snapdragon 820 (3) | CPU group | AMD RX 1st Gen. (6) |
3 | Generation | 1 |
Kryo | Architecture | Merlin Falcon (Excavator) |
Mobile | Segment | Mobile |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe Qualcomm Snapdragon 820 Lite has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the Qualcomm Snapdragon 820 Lite is 1.80 GHz while the AMD RX-421BD has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the AMD RX-421BD is at 2.10 GHz (3.40 GHz). |
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Qualcomm Snapdragon 820 Lite | Characteristic | AMD RX-421BD |
4 | Cores | 4 |
4 | Threads | 4 |
hybrid (big.LITTLE) | Core architecture | normal |
No | Hyperthreading | No |
No | Overclocking ? | No |
1.80 GHz 2x Kryo |
A-Core | 2.10 GHz (3.40 GHz) |
1.36 GHz 2x Kryo |
B-Core | -- |
Integrated graphics (iGPU)The Qualcomm Snapdragon 820 Lite or AMD RX-421BD has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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Qualcomm Adreno 530 | GPU | AMD Radeon R7 - 512 (Merlin Falcon) |
0.51 GHz | GPU frequency | 0.80 GHz |
0.51 GHz | GPU (Turbo) | -- |
5 | GPU Generation | 3 |
14 nm | Technology | 28 |
0 | Max. displays | 3 |
-- | Compute units | 8 |
256 | Shader | 512 |
No | Hardware Raytracing | No |
No | Frame Generation | No |
-- | Max. GPU Memory | 2 GB |
11,1 | DirectX Version | 12 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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Qualcomm Adreno 530 | GPU | AMD Radeon R7 - 512 (Merlin Falcon) |
Decode | Codec h265 / HEVC (8 bit) | Decode |
No | Codec h265 / HEVC (10 bit) | No |
Decode | Codec h264 | Decode / Encode |
Decode | Codec VP9 | No |
Decode | Codec VP8 | No |
No | Codec AV1 | No |
No | Codec AVC | No |
Decode | Codec VC-1 | No |
Decode | Codec JPEG | Decode |
Memory & PCIeThe Qualcomm Snapdragon 820 Lite can use up to 8 GB of memory in 4 memory channels. The maximum memory bandwidth is 10.7 GB/s. The AMD RX-421BD supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 38.4 GB/s. |
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Qualcomm Snapdragon 820 Lite | Characteristic | AMD RX-421BD |
LPDDR4-1333 | Memory | DDR4-2400, DDR3-2133 |
8 GB | Max. Memory | |
4 (Quad Channel) | Memory channels | 2 (Dual Channel) |
10.7 GB/s | Max. Bandwidth | 38.4 GB/s |
No | ECC | Yes |
-- | L2 Cache | 2.00 MB |
-- | L3 Cache | -- |
-- | PCIe version | 3.0 |
-- | PCIe lanes | 12 |
-- | PCIe Bandwidth | 11.8 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the Qualcomm Snapdragon 820 Lite is --, while the AMD RX-421BD has a TDP of 35 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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Qualcomm Snapdragon 820 Lite | Characteristic | AMD RX-421BD |
-- | TDP (PL1 / PBP) | 35 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | 12 W |
-- | Tjunction max. | 90 °C |
Technical detailsThe Qualcomm Snapdragon 820 Lite is manufactured in 14 nm and has 0.00 MB cache. The AMD RX-421BD is manufactured in 28 nm and has a 2.00 MB cache. |
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Qualcomm Snapdragon 820 Lite | Characteristic | AMD RX-421BD |
14 nm | Technology | 28 nm |
Chiplet | Chip design | Unknown |
Armv8-A (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
-- | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 |
-- | Socket | FP4 |
None | Virtualization | AMD-V, AMD-Vt |
No | AES-NI | Yes |
Android | Operating systems | |
Q1/2016 | Release date | Q4/2015 |
-- | Release price | -- |
show more data | show more data | |
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Qualcomm Snapdragon 820 Lite
Qualcomm Adreno 530 @ 0.51 GHz |
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AMD RX-421BD
AMD Radeon R7 - 512 (Merlin Falcon) @ 0.80 GHz |
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Qualcomm Snapdragon 820 Lite
4C 4T @ 1.80 GHz |
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AMD RX-421BD
4C 4T @ 3.40 GHz |
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Qualcomm Snapdragon 820 Lite
4C 4T @ 1.80 GHz |
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AMD RX-421BD
4C 4T @ 2.10 GHz |
Devices using this processor |
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Qualcomm Snapdragon 820 Lite | AMD RX-421BD |
Unknown | Unknown |