GeForce GTX 660 and Radeon Instinct MI300X - video card comparison
GeForce GTX 660
Radeon Instinct MI300X
Architecture
Kepler (2012−2018)
CDNA 3.0
GPU code name
GK106
Aqua Vanjaram
Market segment
Desktop
Desktop
Release date
September 2012
December 2023
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 5.0 x16
Supplementary power connectors
One 6-pin
None
SLI options
+
-
Boost clock speed
1033 MHz
2100 MHz
Core clock speed
980 MHz
-
CUDA cores
960
-
Floating-point performance
1,981 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
2,540 million
153,000 million
Pipelines / CUDA cores
960
19456
Power consumption (TDP)
140 Watt
750 Watt
Texture fill rate
78.4 billion/sec
2,554
Memory type
GDDR5
HBM3
Maximum RAM amount
2 GB
192 GB
Memory bus width
192-bit GDDR5
8192 Bit
Memory clock speed
6.0 GB/s
5 GB/s
Memory bandwidth
144.2 GB/s
5,171 GB/s
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
N/A
CUDA
+
-
OpenCL
1.2
3.0
OpenGL
4.3
N/A
Shader Model
5.1
N/A
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-