Radeon HD 7770 and Radeon HD 8770 OEM - video card comparison
Radeon HD 7770
Radeon HD 8770 OEM
Architecture
GCN (2011−2017)
GCN 2.0 (2013−2017)
GPU code name
Cape Verde
Bonaire
Market segment
Desktop
Desktop
Release date
February 2012
September 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
1000 MHz
1050 MHz
Floating-point performance
-
1,882 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
2,080 million
Pipelines / CUDA cores
640
896
Power consumption (TDP)
80 Watt
85 Watt
Texture fill rate
40.00
58.80
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
6000 MHz
Memory bandwidth
72 GB/s
96 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
+
-
HDMI
+
+
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.3
Vulkan
1.2.131
1.2.131