Radeon 620 Mobile vs Radeon R9 M385X
We compared two Mobile platform GPUs: 2GB VRAM Radeon 620 Mobile and 4GB VRAM Radeon R9 M385X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon 620 Mobile 's Advantages
Released 4 years late
Radeon R9 M385X 's Advantages
Boost Clock has increased by 7% (1100MHz vs 1024MHz)
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (76.80GB/s vs 14.40GB/s)
512 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon 620 Mobile
786
Radeon R9 M385X
+150%
1971
Graphics Card
May 2019
Release Date
May 2015
Mobility Radeon
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
730 MHz
Base Clock
1000 MHz
1024 MHz
Boost Clock
1100 MHz
900 MHz
Memory Clock
1200 MHz
Memory
2GB
Memory Size
4GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
76.80GB/s
Render Config
6
Compute Units
14
384
Shading Units
896
24
TMUs
56
8
ROPs
16
16 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
256 KB
Theoretical Performance
8.192 GPixel/s
Pixel Rate
17.60 GPixel/s
24.58 GTexel/s
Texture Rate
61.60 GTexel/s
786.4 GFLOPS
FP16 (half)
-
786.4 GFLOPS
FP32 (float)
1.971 TFLOPS
49.15 GFLOPS
FP64 (double)
123.2 GFLOPS
Board Design
50W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Processor
Polaris 24
GPU Name
Strato
Polaris 24 XL
GPU Variant
Strato XT
GCN 3.0
Architecture
GCN 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
2.08 billion
125 mm²
Die Size
160 mm²
Graphics Features
12 (12_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.0
OpenCL
2.1
1.2
Vulkan
1.2.170
6.3
Shader Model
6.5
