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
GEFORCE
CMP 40HX
CORE STATE
TU106
VRAM
8 GB
CLOCK SPEED
1650 MHz
TDP
185 W
BUS WIDTH
256 bit
ARCHITECTURE
Turing
PROCESS
12 nm
LAUNCH DATE
2021
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
660M
CMP 40HX
Core Specs
Shading Units
384
2,304
+500.0%
Shaders
384
2,304
+500.0%
TMUs
24
144
+500.0%
ROPs
16
64
+300.0%
Compute Units
6
—
SM Count
—
36
Clocks
Base Clock
1500 MHz
1470 MHz
Boost Clock
1900 MHz
1650 MHz
Memory Clock
System Shared
1750 MHz
14 Gbps effective
Memory
Memory Size
System Shared
8 GB
VRAM (MB)
—
8,192
Memory Type
System Shared
GDDR6
Memory Bus
System Shared
256 bit
Bandwidth
System Dependent
448.0 GB/s
Cache
L1 Cache
128 KB per Array
64 KB (per SM)
L2 Cache
2 MB
4 MB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
105.6 GPixel/s
Texture Rate
45.60 GTexel/s
237.6 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
7.603 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
237.6 GFLOPS (1:32)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
15.21 TFLOPS (2:1)
AI/RT
RT Cores
6
36
+500.0%
Tensor Cores
—
288
Power
TDP
40 W
185 W
TDP (W)
40
185
+362.5%
Suggested PSU
—
450 W
Power Connectors
None
1x 8-pin
Architecture
Architecture
RDNA 2.0
Turing
GPU Name
Rembrandt
TU106
Generation
Navi II IGP
(Rembrandt Mobile)
Mining GPUs
Process Size
6 nm
12 nm
Transistors
13,100 million
10,800 million
Die Size
208 mm²
445 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
24.3M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
2.0
3.0
CUDA
—
7.5
Shader Model
6.8
6.8
Physical
Slot Width
IGP
Dual-slot
Length
—
229 mm
9 inches
Height
—
111 mm
4.4 inches
Outputs
Portable Device Dependent
No outputs
Bus Interface
PCIe 4.0 x8
PCIe 1.0 x4
Other
Launch Price
—
699 USD
Production
End-of-life
End-of-life
Predecessor
Vega II IGP
—
Successor
Navi III IGP
—