Radeon HD 6450 and Radeon HD 6390 - video card comparison
Radeon HD 6450
Radeon HD 6390
Architecture
TeraScale 2 (2009−2015)
TeraScale 2 (2009−2015)
GPU code name
Caicos
Redwood
Market segment
Desktop
Desktop
Release date
April 2011
July 2011
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
-
550 MHz
Floating-point performance
200.0 gflops
352.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
370 million
627 million
Pipelines / CUDA cores
160
320
Power consumption (TDP)
30 Watt
39 Watt
Texture fill rate
5.000
8.800
Memory type
GDDR5
DDR2
Maximum RAM amount
1 GB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
800 MHz
1000 MHz
Memory bandwidth
25.6 GB/s
16 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
11.2 (11_0)
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.4
Shader Model
5.0
5.0
Vulkan
-
N/A
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-