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
GeForce RTX 4080 Mobile
CORE STATE
AD104
VRAM
12 GB
CLOCK SPEED
1665 MHz
TDP
110 W
BUS WIDTH
192 bit
ARCHITECTURE
Ada Lovelace
PROCESS
5 nm
LAUNCH DATE
2023
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
passmark_directx_10
passmark_directx_11
passmark_directx_12
passmark_directx_9
passmark_g2d
passmark_g3d
passmark_gpu_compute
DETAILED SPECIFICATIONS
SPECIFICATION
660M
RTX 4080 Mobile
Core Specs
Shading Units
384
7,424
+1833.3%
Shaders
384
7,424
+1833.3%
TMUs
24
232
+866.7%
ROPs
16
80
+400.0%
Compute Units
6
—
SM Count
—
58
Clocks
Base Clock
1500 MHz
1290 MHz
Boost Clock
1900 MHz
1665 MHz
Memory Clock
System Shared
2250 MHz
18 Gbps effective
Memory
Memory Size
System Shared
12 GB
VRAM (MB)
—
12,288
Memory Type
System Shared
GDDR6
Memory Bus
System Shared
192 bit
Bandwidth
System Dependent
432.0 GB/s
Cache
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
2 MB
48 MB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
133.2 GPixel/s
Texture Rate
45.60 GTexel/s
386.3 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
24.72 TFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
386.3 GFLOPS (1:64)
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
24.72 TFLOPS (1:1)
AI/RT
RT Cores
6
58
+866.7%
Tensor Cores
—
232
Power
TDP
40 W
110 W
TDP (W)
40
110
+175.0%
Power Connectors
None
None
Architecture
Architecture
RDNA 2.0
Ada Lovelace
GPU Name
Rembrandt
AD104
Generation
Navi II IGP
(Rembrandt Mobile)
GeForce 40 Mobile
Process Size
6 nm
5 nm
Transistors
13,100 million
35,800 million
Die Size
208 mm²
294 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
121.8M / 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
—
8.9
Shader Model
6.8
6.8
Physical
Slot Width
IGP
IGP
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x16
Other
Production
End-of-life
Active
Predecessor
Vega II IGP
GeForce 30 Mobile
Successor
Navi III IGP
GeForce 50 Mobile