Radeon HD 7770 and Radeon HD 6450 GDDR5 - video card comparison
Radeon HD 7770
Radeon HD 6450 GDDR5
Architecture
GCN (2011−2017)
Terascale 2 (2009−2015)
GPU code name
Cape Verde
Caicos
Market segment
Desktop
Desktop
Release date
February 2012
April 2011
Interface
PCIe 3.0 x16
-
Supplementary power connectors
1x 6-pin
-
Core clock speed
1000 MHz
750 MHz
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
40.00
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4500 MHz
900 MHz
Memory bandwidth
72 GB/s
-
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
-
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
11
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
Vulkan
1.2.131
-