Radeon R9 280 and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon R9 280 vs Radeon HD 6450
Radeon R9 280
5725
Radeon HD 6450
203
Radeon R9 280
Radeon HD 6450
Architecture
GCN 1.0 (2012−2020)
TeraScale 2 (2009−2015)
GPU code name
Tahiti
Caicos
Market segment
Desktop
Desktop
Release date
March 2014
April 2011
Bus support
PCIe 3.0
PCIe 2.0 x8
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
None
Boost clock speed
933 MHz
750 MHz
Floating-point performance
3,344 gflops
200.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
4,313 million
370 million
Pipelines / CUDA cores
1792
160
Power consumption (TDP)
200 Watt
30 Watt
Texture fill rate
104.5
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
1 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
1250 MHz
800 MHz
Memory bandwidth
240 GB/s
25.6 GB/s
Memory bandwidth
-
8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
1
1
Number of Eyefinity displays
-
4
HDMI
+
+
DisplayPort support
-
+
DirectX
DirectX® 12
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
1
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-