Radeon HD 7770 and Radeon HD 6490 - video card comparison
Radeon HD 7770
Radeon HD 6490
Architecture
GCN (2011−2017)
TeraScale 2 (2009−2015)
GPU code name
Cape Verde
Redwood
Market segment
Desktop
Desktop
Release date
February 2012
July 2011
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
None
Core clock speed
1000 MHz
550 MHz
Floating-point performance
-
352.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
627 million
Pipelines / CUDA cores
640
320
Power consumption (TDP)
80 Watt
39 Watt
Texture fill rate
40.00
8.800
Memory type
GDDR5
DDR2
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
1000 MHz
Memory bandwidth
72 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
+
-
HDMI
+
+
DirectX
12 (11_1)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
N/A