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 555
CORE STATE
Polaris 21
VRAM
2 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
660M
Pro 555
Core Specs
Shading Units
384
768
+100.0%
Shaders
384
768
+100.0%
TMUs
24
48
+100.0%
ROPs
16
16
0.0%
Compute Units
6
12
+100.0%
Clocks
Base Clock
1500 MHz
—
Boost Clock
1900 MHz
—
GPU Clock
—
850 MHz
Memory Clock
System Shared
1275 MHz
5.1 Gbps effective
Memory
Memory Size
System Shared
2 GB
VRAM (MB)
—
2,048
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
128 bit
Bandwidth
System Dependent
81.60 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
13.60 GPixel/s
Texture Rate
45.60 GTexel/s
40.80 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
1,305.6 GFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
81.60 GFLOPS (1:16)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
1,305.6 GFLOPS (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 4.0
GPU Name
Rembrandt
Polaris 21
Generation
Navi II IGP
(Rembrandt Mobile)
Radeon Pro Mac
(500 Series)
Process Size
6 nm
14 nm
Transistors
13,100 million
3,000 million
Die Size
208 mm²
123 mm²
Foundry
TSMC
GlobalFoundries
Density
63.0M / mm²
24.4M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.4
1.3
OpenCL
2.0
2.1
Shader Model
6.8
6.7
Physical
Slot Width
IGP
IGP
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
Vega II IGP
—
Successor
Navi III IGP
—