Radeon HD 5970 and GeForce GT 420 OEM - video card comparison
Radeon HD 5970
GeForce GT 420 OEM
Architecture
TeraScale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Hemlock
GF108
Market segment
Desktop
Desktop
Release date
November 2009
September 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
None
Core clock speed
725 MHz
700 MHz
Floating-point performance
2x 2,320.0 gflops
134.4 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
2,154 million
585 million
Pipelines / CUDA cores
1600
48
Power consumption (TDP)
294 Watt
50 Watt
Texture fill rate
58.00
2.800
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4000 MHz
1800 MHz
Memory bandwidth
128.0 GB/s
28.8 GB/s
Display Connectors
2x DVI, 1x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
N/A