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 Pro Vega 20
CORE STATE
Vega 12
VRAM
4 GB
CLOCK SPEED
1283 MHz
TDP
100 W
BUS WIDTH
1024 bit
ARCHITECTURE
GCN 5.0
PROCESS
14 nm
LAUNCH DATE
2018
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
660M
Pro Vega 20
Core Specs
Shading Units
384
1,280
+233.3%
Shaders
384
1,280
+233.3%
TMUs
24
80
+233.3%
ROPs
16
32
+100.0%
Compute Units
6
20
+233.3%
Clocks
Base Clock
1500 MHz
815 MHz
Boost Clock
1900 MHz
1283 MHz
Memory Clock
System Shared
740 MHz
1480 Mbps effective
Memory
Memory Size
System Shared
4 GB
VRAM (MB)
—
4,096
Memory Type
System Shared
HBM2
Memory Bus
System Shared
1024 bit
Bandwidth
System Dependent
189.4 GB/s
Cache
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
1024 KB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
41.06 GPixel/s
Texture Rate
45.60 GTexel/s
102.6 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
3.284 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
205.3 GFLOPS (1:16)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
6.569 TFLOPS (2:1)
AI/RT
RT Cores
6
—
Power
TDP
40 W
100 W
TDP (W)
40
100
+150.0%
Power Connectors
None
—
Architecture
Architecture
RDNA 2.0
GCN 5.0
GPU Name
Rembrandt
Vega 12
Generation
Navi II IGP
(Rembrandt Mobile)
Radeon Pro Mac
(Vega Series)
Process Size
6 nm
14 nm
Transistors
13,100 million
—
Die Size
208 mm²
—
Foundry
TSMC
GlobalFoundries
Density
63.0M / mm²
—
API Support
DirectX
12 Ultimate (12_2)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.4
1.3
OpenCL
2.0
2.1
Shader Model
6.8
6.0
Physical
Slot Width
IGP
IGP
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
—
Successor
Navi III IGP
—