AMD Radeon 680M vs AMD Radeon 660M
GPU · Specs Compare
Graphics Card
Release Date
Jan 2022
Jan 2022
Generation
Navi II IGP
Rembrandt
Type
Integrated
Integrated
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x8
Clock Speeds
Base Clock
2000 MHz
1500 MHz
Boost Clock
2200 MHz
1900 MHz
Memory Clock
System Shared
System Shared
Memory
Memory Size
System Shared
System Shared
Memory Type
System Shared
System Shared
Memory Bus
System Shared
System Shared
Bandwidth
System Dependent
System Dependent
Render Config
Compute Units
12
6
Shading Units
768
384
TMUs
48
24
ROPs
32
16
RT Cores
12
6
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
2 MB
2 MB
Theoretical Performance
Pixel Rate
70.40 GPixel/s
30.40 GPixel/s
Texture Rate
105.6 GTexel/s
45.60 GTexel/s
FP16 (half)
6.758 TFLOPS
2.918 TFLOPS
FP32 (float)
3.379 TFLOPS
1459 GFLOPS
FP64 (double)
211.2 GFLOPS
91.20 GFLOPS
Graphics Processor
GPU Name
Rembrandt
Rembrandt
Architecture
RDNA 2.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
6 nm
6 nm
Transistors
13.1 billion
13.1 billion
Die Size
208 mm²
210 mm²
Board Design
TDP
50W
15W
Outputs
Portable Device Dependent
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.3
1.2
Shader Model
6.7
6.5
Benchmark
3DMark Time Spy
—
1,537
3DMark Time Spy Extreme
—
701
▲ Specs Compare
Data sourced from official specifications and benchmark tests.