GeForce GTX 660 OEM and GeForce RTX 4080 - video card comparison
GeForce GTX 660 OEM
GeForce RTX 4080
Architecture
Kepler (2012−2018)
Ada Lovelace
GPU code name
GK104
AD103-300-A1
Market segment
Desktop
Desktop
Release date
August 2012
September 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
1x 6-pin
1x 16-pin
Boost clock speed
888 MHz
2505 MHz
Core clock speed
823 MHz
2205 MHz
Floating-point performance
2,046 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
3,540 million
45,900 million
Pipelines / CUDA cores
1152
9728
Power consumption (TDP)
130 Watt
320 Watt
Texture fill rate
85.25
761.5
Memory type
GDDR5
GDDR6X
Maximum RAM amount
2 GB
16 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5600 MHz
22400 MHz
Memory bandwidth
179.2 GB/s
716.8 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI
+
+
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
3.0
8.9
OpenCL
1.2
3.0
OpenGL
4.6
4.6
Shader Model
5.1
6.6
Vulkan
1.1.126
1.3