Radeon HD 7770 and Radeon HD 4870 X2 - video card comparison
Passmark - benchmark score Radeon HD 7770 vs Radeon HD 4870 X2
Radeon HD 7770
2235
Radeon HD 4870 X2
1348
Radeon HD 7770
Radeon HD 4870 X2
Architecture
GCN (2011−2017)
TeraScale (2005−2013)
GPU code name
Cape Verde
R700
Market segment
Desktop
Desktop
Release date
February 2012
August 2008
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Core clock speed
1000 MHz
700 MHz
Floating-point performance
-
2x 1,120.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
1,500 million
956 million
Pipelines / CUDA cores
640
800
Power consumption (TDP)
80 Watt
286 Watt
Texture fill rate
40.00
28.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
4500 MHz
3600 MHz
Memory bandwidth
72 GB/s
115.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
10.1 (10_1)
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.2.131
N/A