GeForce GTX 660 and Radeon RX 7900 XT - video card comparison
Passmark - benchmark score GeForce GTX 660 vs Radeon RX 7900 XT
GeForce GTX 660
4119
Radeon RX 7900 XT
29721
GeForce GTX 660
Radeon RX 7900 XT
Architecture
Kepler (2012−2018)
RDNA 3
GPU code name
GK106
Navi 31 XT
Market segment
Desktop
Desktop
Release date
September 2012
November 2022
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
One 6-pin
2x 8-pin
SLI options
+
-
Boost clock speed
1033 MHz
2000 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
57,700 million
Pipelines / CUDA cores
960
5376
Power consumption (TDP)
140 Watt
315 Watt
Texture fill rate
78.4 billion/sec
804.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
2 GB
20 GB
Memory bus width
192-bit GDDR5
320 Bit
Memory clock speed
6.0 GB/s
20000 MHz
Memory bandwidth
144.2 GB/s
800.0 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
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
+
-
OpenCL
1.2
2.1
OpenGL
4.3
4.6
Shader Model
5.1
6.7
Vulkan
1.1.126
1.3
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-