AMD Radeon 660M vs AMD Radeon R9 M295X Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Jan 2022
Nov 2014
Generation
Rembrandt
Crystal System
Type
Integrated
Mobile
Bus Interface
PCIe 4.0 x8
MXM-B (3.0)
Clock Speeds
Base Clock
1500 MHz
—
Boost Clock
1900 MHz
—
Memory Clock
System Shared
1362 MHz
Memory
Memory Size
System Shared
4GB
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
256bit
Bandwidth
System Dependent
174.3GB/s
Render Config
Compute Units
6
32
Shading Units
384
2048
TMUs
24
128
ROPs
16
32
RT Cores
6
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
512 KB
Theoretical Performance
Pixel Rate
30.40 GPixel/s
27.20 GPixel/s
Texture Rate
45.60 GTexel/s
108.8 GTexel/s
FP16 (half)
2.918 TFLOPS
3.482 TFLOPS
FP32 (float)
1459 GFLOPS
3.482 TFLOPS
FP64 (double)
91.20 GFLOPS
217.6 GFLOPS
Graphics Processor
GPU Name
Rembrandt
Amethyst
Architecture
RDNA 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
13.1 billion
5 billion
Die Size
210 mm²
366 mm²
GPU Variant
—
Amethyst XT
Board Design
TDP
15W
250W
Outputs
No outputs
No outputs
Power Connectors
None
—
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.2
1.2
Shader Model
6.5
6.3
Benchmark
3DMark Time Spy
1,537
—
3DMark Time Spy Extreme
701
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.