GeForce GTX 660 Rev. 2 and GeForce RTX 4090 - video card comparison
GeForce GTX 660 Rev. 2
GeForce RTX 4090
Architecture
Kepler (2012−2018)
Ada Lovelace
GPU code name
GK104
AD102-300-A1
Market segment
Desktop
Desktop
Release date
September 2014
September 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
1x 6-pin
1x 16-pin
Boost clock speed
1032 MHz
2520 MHz
Core clock speed
980 MHz
2235 MHz
Floating-point performance
1,981 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
3,540 million
76,300 million
Pipelines / CUDA cores
960
16384
Power consumption (TDP)
140 Watt
450 Watt
Texture fill rate
82.56
1,290
Memory type
GDDR5
GDDR6X
Maximum RAM amount
2 GB
24 GB
Memory bus width
192 Bit
384 Bit
Memory clock speed
6008 MHz
21000 MHz
Memory bandwidth
144.2 GB/s
1,008 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