GeForce GTX 660M and GeForce RTX 4080 Mobile - video card comparison
GeForce GTX 660M
GeForce RTX 4080 Mobile
Architecture
Kepler (2012−2018)
Ada Lovelace
GPU code name
N13E-GE
GN21-X9
Market segment
Laptop
Laptop
Release date
March 2012
January 2023
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
MXM-B (3.0)
PCIe 4.0 x16
SLI options
+
-
Boost clock speed
950 MHz
2280 MHz
Core clock speed
835 MHz
1860 MHz
CUDA cores
384
-
Floating-point performance
729.6 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
1,270 million
35,800 million
Pipelines / CUDA cores
384
7424
Power consumption (TDP)
50 Watt
150 Watt (60 - 150 Watt TGP)
Texture fill rate
30.4 billion/sec
386.3
Memory type
GDDR5
GDDR6X
Maximum RAM amount
2 GB
12 GB
Memory bus width
128bit
192 Bit
Memory clock speed
2000 MHz
20000 MHz
Memory bandwidth
64.0 GB/s
432.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
Portable Device Dependent
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 Ultimate (12_2)
CUDA
+
8.9
OpenCL
1.1
3.0
OpenGL
4.5
4.6
Shader Model
5.1
6.7
Vulkan
1.1.126
1.3
Optimus
+
-