GPU Comparison
RADEON
AMD Radeon 660M
CORE STATE
Rembrandt
VRAM
System Shared
CLOCK SPEED
1900 MHz
TDP
40 W
BUS WIDTH
System Shared
ARCHITECTURE
RDNA 2.0
PROCESS
6 nm
LAUNCH DATE
2022
VS
RADEON
Radeon R9 M395X
CORE STATE
Amethyst
VRAM
8 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
256 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
660M
R9 M395X
Core Specs
Shading Units
384
2,048
+433.3%
Shaders
384
2,048
+433.3%
TMUs
24
128
+433.3%
ROPs
16
32
+100.0%
Compute Units
6
32
+433.3%
Clocks
Base Clock
1500 MHz
—
Boost Clock
1900 MHz
—
GPU Clock
—
723 MHz
Memory Clock
System Shared
1250 MHz
5 Gbps effective
Memory
Memory Size
System Shared
8 GB
VRAM (MB)
—
8,192
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
256 bit
Bandwidth
System Dependent
160.0 GB/s
Cache
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
512 KB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
23.14 GPixel/s
Texture Rate
45.60 GTexel/s
92.54 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
2.961 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
185.1 GFLOPS (1:16)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
2.961 TFLOPS (1:1)
AI/RT
RT Cores
6
—
Power
TDP
40 W
75 W
TDP (W)
40
75
+87.5%
Power Connectors
None
None
Architecture
Architecture
RDNA 2.0
GCN 3.0
GPU Name
Rembrandt
Amethyst
Generation
Navi II IGP
(Rembrandt Mobile)
Gem System
(R9 M300)
Process Size
6 nm
28 nm
Transistors
13,100 million
5,000 million
Die Size
208 mm²
366 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
13.7M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.4
1.2.170
OpenCL
2.0
2.1
Shader Model
6.8
6.5
Physical
Slot Width
IGP
MXM Module
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Vega II IGP
Solar System
Successor
Navi III IGP
Polaris Mobile