Radeon R7 265 and Radeon HD 6450 - video card comparison
Radeon R7 265
Radeon HD 6450
Architecture
GCN 1.0 (2012−2020)
TeraScale 2 (2009−2015)
GPU code name
Pitcairn
Caicos
Market segment
Desktop
Desktop
Release date
February 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
None
Boost clock speed
925 MHz
750 MHz
Floating-point performance
1,894 gflops
200.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
370 million
Pipelines / CUDA cores
1024
160
Power consumption (TDP)
150 Watt
30 Watt
Texture fill rate
59.20
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1400 MHz
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)
Display Connectors
2x DVI, 1x HDMI, 1x 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
AppAcceleration
-
-
CrossFire
1
1
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-