GeForce GT 420M and Radeon 660M - video card comparison
Passmark - benchmark score GeForce GT 420M vs Radeon 660M
GeForce GT 420M
417
Radeon 660M
6474
GeForce GT 420M
Radeon 660M
Architecture
Fermi (2010−2014)
RDNA 2 (2020−2022)
GPU code name
N11P-GE
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
September 2010
January 2022
Interface
PCIe 2.0 x16
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
-
1900 MHz
Core clock speed
500 MHz
-
CUDA cores
96
-
Floating-point performance
192 gflops
-
Manufacturing process technology
40 nm
6 nm
Number of transistors
585 million
13,100 million
Pipelines / CUDA cores
96
384
Power consumption (TDP)
23 Watt
45 Watt
Texture fill rate
6.0 billion/sec
45.60
Memory type
(G)DDR3
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
128 Bit
System Shared
Memory clock speed
800 MHz
System Shared
Memory bandwidth
25.6 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 API
12 (12_1)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.5
Vulkan
N/A
1.2