GeForce RTX 3080 Ti and GeForce GTX 660M Mac Edition - video card comparison
GeForce RTX 3080 Ti
GeForce GTX 660M Mac Edition
Architecture
Ampere (2020−2022)
Kepler (2012−2018)
GPU code name
Ampere GA102
GK107
Market segment
Desktop
Desktop
Release date
September 2020
April 2013
Interface
PCIe 4.0 x16
MXM-B (3.0)
Supplementary power connectors
1x 12-pin
None
Boost clock speed
1667 MHz
-
Core clock speed
1370 MHz
950 MHz
Floating-point performance
-
729.6 gflops
Manufacturing process technology
8 nm
28 nm
Number of transistors
28,300 million
1,270 million
Pipelines / CUDA cores
10240
384
Power consumption (TDP)
350 Watt
50 Watt
Texture fill rate
532.8
30.40
Memory type
GDDR6X
GDDR5
Maximum RAM amount
12 GB
512 MB
Memory bus width
384 Bit
128 Bit
Memory clock speed
19000 MHz
5000 MHz
Memory bandwidth
912.4 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 3x DisplayPort
No outputs
HDMI
+
-
DirectX
12 Ultimate (12_2)
12 (11_0)
CUDA
8.6
3.0
OpenCL
3.0
1.2
OpenGL
4.6
4.6
Shader Model
6.6
5.1
Vulkan
1.2
1.1.126