Radeon R9 270X and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon R9 270X vs Radeon HD 6450
Radeon R9 270X
5036
Radeon HD 6450
203
Radeon R9 270X
Radeon HD 6450
Architecture
GCN (2011−2017)
TeraScale 2 (2009−2015)
GPU code name
Curacao XT
Caicos
Market segment
Desktop
Desktop
Release date
October 2013
April 2011
Bus support
PCIe 3.0
PCIe 2.0 x8
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2 x 6-pin
None
Boost clock speed
1050 MHz
750 MHz
Floating-point performance
2,688 gflops
200.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
370 million
Pipelines / CUDA cores
1280
160
Power consumption (TDP)
180 Watt
30 Watt
Texture fill rate
84.00
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
-
800 MHz
Memory bandwidth
179.2 GB/s
25.6 GB/s
Memory bandwidth
-
8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
+
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
-
-