Radeon HD 6450 and GeForce GT 420 OEM - video card comparison
Radeon HD 6450
GeForce GT 420 OEM
Architecture
TeraScale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Caicos
GF108
Market segment
Desktop
Desktop
Release date
April 2011
September 2010
Bus support
PCIe 2.0 x8
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Boost clock speed
750 MHz
-
Core clock speed
-
700 MHz
Floating-point performance
200.0 gflops
134.4 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
370 million
585 million
Pipelines / CUDA cores
160
48
Power consumption (TDP)
30 Watt
50 Watt
Texture fill rate
5.000
2.800
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
800 MHz
1800 MHz
Memory bandwidth
25.6 GB/s
28.8 GB/s
Memory bandwidth
8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 1x VGA
Eyefinity
1
-
Number of Eyefinity displays
4
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
2.1
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
-
N/A
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-