AMD Radeon RX 550X Mobile vs AMD Radeon 660M
GPU Specs Compare
Graphics Card
Release Date
Apr 2018
Jan 2022
Generation
Mobility Radeon
Rembrandt
Type
Mobile
Integrated
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x8
Clock Speeds
Base Clock
1100 MHz
1500 MHz
Boost Clock
1176 MHz
1900 MHz
Memory Clock
1500 MHz
System Shared
Memory
Memory Size
2GB
System Shared
Memory Type
GDDR5
System Shared
Memory Bus
64bit
System Shared
Bandwidth
48.00GB/s
System Dependent
Render Config
Compute Units
10
6
Shading Units
640
384
TMUs
40
24
ROPs
16
16
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
512 KB
2 MB
RT Cores
-
6
Theoretical Performance
Pixel Rate
18.82 GPixel/s
30.40 GPixel/s
Texture Rate
47.04 GTexel/s
45.60 GTexel/s
FP16 (half)
1.505 TFLOPS
2.918 TFLOPS
FP32 (float)
1.505 TFLOPS
1459 GFLOPS
FP64 (double)
94.08 GFLOPS
91.20 GFLOPS
Graphics Processor
GPU Name
Polaris 23
Rembrandt
GPU Variant
Polaris 23 MXT
-
Architecture
GCN 4.0
RDNA 2.0
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
6 nm
Transistors
2.2 billion
13.1 billion
Die Size
103 mm²
210 mm²
Board Design
TDP
50W
15W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.2
1.2
Shader Model
6.4
6.5
📊 Benchmark
3DMark Time Spy
-
1,537
3DMark Time Spy Extreme
-
701