Radeon HD 5670 and GeForce GTX 645 OEM - video card comparison
Radeon HD 5670
GeForce GTX 645 OEM
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Redwood
GK106
Market segment
Desktop
Desktop
Release date
January 2010
April 2013
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Core clock speed
775 MHz
824 MHz
Floating-point performance
620.0 gflops
949.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
627 million
2,540 million
Pipelines / CUDA cores
400
576
Power consumption (TDP)
64 Watt
65 Watt
Texture fill rate
15.50
39.55
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1000 MHz
4000 MHz
Memory bandwidth
64 GB/s
64 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126