GeForce GTX 660 Ti and GeForce RTX 3080 Ti - video card comparison
Passmark - benchmark score GeForce GTX 660 Ti vs GeForce RTX 3080 Ti
GeForce GTX 660 Ti
4547
GeForce RTX 3080 Ti
27990
GeForce GTX 660 Ti
GeForce RTX 3080 Ti
Architecture
Kepler (2012−2018)
Ampere (2020−2022)
GPU code name
GK104
Ampere GA102
Market segment
Desktop
Desktop
Release date
August 2012
September 2020
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
Two 6-pin
1x 12-pin
SLI options
+
-
Boost clock speed
980 MHz
1667 MHz
Core clock speed
915 MHz
1370 MHz
CUDA cores
1344
-
Floating-point performance
2,459.5 gflops
-
Manufacturing process technology
28 nm
8 nm
Number of transistors
3,540 million
28,300 million
Pipelines / CUDA cores
1344
10240
Power consumption (TDP)
150 Watt
350 Watt
Texture fill rate
102.5 billion/sec
532.8
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
19000 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, 3x DisplayPort
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
1.2
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-