Radeon HD 6870 X2 and Radeon R2 Graphics - video card comparison
Radeon HD 6870 X2
Radeon R2 Graphics
Architecture
TeraScale 2 (2009−2015)
GCN 2.0 (2013−2017)
GPU code name
Barts
Beema
Market segment
Desktop
Desktop
Release date
July 2011
February 2015
Interface
PCIe 2.0 x16
IGP
Core clock speed
900 MHz
351 MHz
Floating-point performance
2x 2,016.0 gflops
179.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
930 million
Pipelines / CUDA cores
1120
128
Power consumption (TDP)
300 Watt
15 Watt
Texture fill rate
50.40
2.808
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
4200 MHz
System Shared
Memory bandwidth
134.4 GB/s
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
HDMI
+
-
DirectX
11.2 (11_0)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.3
Vulkan
N/A
1.2.131