Radeon R7 250X and Radeon HD 6450 GDDR5 - video card comparison
Radeon R7 250X
Radeon HD 6450 GDDR5
Architecture
GCN 1.0 (2012−2020)
Terascale 2 (2009−2015)
GPU code name
Cape Verde
Caicos
Market segment
Desktop
Desktop
Release date
February 2014
April 2011
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
1 x 6-pin
-
Boost clock speed
1000 MHz
-
Core clock speed
-
750 MHz
Floating-point performance
1,216 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
-
Pipelines / CUDA cores
640
160
Power consumption (TDP)
80 Watt
27 Watt
Texture fill rate
38.00
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1625 MHz
900 MHz
Memory bandwidth
96 GB/s
-
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
-
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
11
Mantle
-
-
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-