Radeon HD 7770 and Radeon HD 7970 X2 - video card comparison
Radeon HD 7770
Radeon HD 7970 X2
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Cape Verde
New Zealand
Market segment
Desktop
Desktop
Release date
February 2012
August 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
3x 8-pin
Core clock speed
1000 MHz
925 MHz
Floating-point performance
-
2x 3,789 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
4,313 million
Pipelines / CUDA cores
640
2048
Power consumption (TDP)
80 Watt
500 Watt
Texture fill rate
40.00
118.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
128 Bit
384 Bit
Memory clock speed
4500 MHz
5500 MHz
Memory bandwidth
72 GB/s
264.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 4x mini-DisplayPort
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.2.131