GeForce GTX 660 Ti and Radeon RX 640 - video card comparison
Passmark - benchmark score GeForce GTX 660 Ti vs Radeon RX 640
GeForce GTX 660 Ti
4547
Radeon RX 640
2020
GeForce GTX 660 Ti
Radeon RX 640
Architecture
Kepler (2012−2018)
Polaris (2016−2019)
GPU code name
GK104
Polaris 12
Market segment
Desktop
Laptop
Release date
August 2012
August 2019
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
Two 6-pin
None
SLI options
+
-
Boost clock speed
980 MHz
1218 MHz
Core clock speed
915 MHz
1218 MHz
CUDA cores
1344
-
Floating-point performance
2,459.5 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
3,540 million
2,200 million
Pipelines / CUDA cores
1344
640
Power consumption (TDP)
150 Watt
50 Watt
Texture fill rate
102.5 billion/sec
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
192-bit GDDR5
64 Bit
Memory clock speed
6.0 GB/s
6000 MHz
Memory bandwidth
144.2 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support
4 displays
-
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (12_0)
CUDA
+
-
OpenCL
1.2
2.0
OpenGL
4.3
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2.131
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-
FreeSync
-
+