GeForce GTX 660M and Radeon RX 6400 - video card comparison
Passmark - benchmark score GeForce GTX 660M vs Radeon RX 6400
GeForce GTX 660M
1478
Radeon RX 6400
7776
GeForce GTX 660M
Radeon RX 6400
Architecture
Kepler (2012−2018)
RDNA 2.0 (2020−2022)
GPU code name
N13E-GE
Navi 24
Market segment
Laptop
Desktop
Release date
March 2012
January 2022
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
MXM-B (3.0)
PCIe 4.0 x4
Supplementary power connectors
-
None
SLI options
+
-
Boost clock speed
950 MHz
2321 MHz
Core clock speed
835 MHz
-
CUDA cores
384
-
Floating-point performance
729.6 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
1,270 million
5,400 million
Pipelines / CUDA cores
384
768
Power consumption (TDP)
50 Watt
53 Watt
Texture fill rate
30.4 billion/sec
111.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
64 Bit
Memory clock speed
2000 MHz
16 GB/s
Memory bandwidth
64.0 GB/s
128.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 Ultimate (12_2)
CUDA
+
-
OpenCL
1.1
2.2
OpenGL
4.5
4.6
Shader Model
5.1
6.6
Vulkan
1.1.126
1.3
Optimus
+
-