Radeon HD 4770 and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon HD 4770 vs Radeon HD 6450
Radeon HD 4770
935
Radeon HD 6450
203
Radeon HD 4770
Radeon HD 6450
Architecture
TeraScale (2005−2013)
TeraScale 2 (2009−2015)
GPU code name
RV740
Caicos
Market segment
Desktop
Desktop
Release date
April 2009
April 2011
Bus support
-
PCIe 2.0 x8
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
None
Boost clock speed
-
750 MHz
Core clock speed
750 MHz
-
Floating-point performance
960.0 gflops
200.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
826 million
370 million
Pipelines / CUDA cores
640
160
Power consumption (TDP)
80 Watt
30 Watt
Texture fill rate
24.00
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
512 MB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
3200 MHz
800 MHz
Memory bandwidth
51.2 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 S-Video
1x DVI, 1x HDMI, 1x VGA
Eyefinity
-
1
Number of Eyefinity displays
-
4
HDMI
-
+
DisplayPort support
-
+
DirectX
10.1 (10_1)
DirectX® 11
Mantle
-
-
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-