GeForce GTX 660 and GeForce RTX 3080 12 GB - video card comparison
Passmark - benchmark score GeForce GTX 660 vs GeForce RTX 3080 12 GB
GeForce GTX 660
4119
GeForce RTX 3080 12 GB
27475
GeForce GTX 660
GeForce RTX 3080 12 GB
Architecture
Kepler (2012−2018)
Ampere (2020−2022)
GPU code name
GK106
Ampere GA102
Market segment
Desktop
Desktop
Release date
September 2012
January 2022
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
One 6-pin
1x 12-pin
SLI options
+
-
Boost clock speed
1033 MHz
1260 MHz
Core clock speed
980 MHz
-
CUDA cores
960
-
Floating-point performance
1,981 gflops
-
Manufacturing process technology
28 nm
8 nm
Number of transistors
2,540 million
28,300 million
Pipelines / CUDA cores
960
8960
Power consumption (TDP)
140 Watt
350 Watt
Texture fill rate
78.4 billion/sec
478.8
Memory type
GDDR5
GDDR6X
Maximum RAM amount
2 GB
12 GB
Memory bus width
192-bit GDDR5
384 Bit
Memory clock speed
6.0 GB/s
1710 MHz
Memory bandwidth
144.2 GB/s
912.4 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
1x HDMI 2.1, 3x DisplayPort 1.4a
Multi monitor support
4 displays
-
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
+
8.6
OpenCL
1.2
3.0
OpenGL
4.3
4.6
Shader Model
5.1
6.6
Vulkan
1.1.126
1.3
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-