Radeon HD 7870 XT and Radeon R7 Graphics - video card comparison
Radeon HD 7870 XT
Radeon R7 Graphics
Architecture
GCN 1.0 (2012−2020)
GCN 2.0 (2013−2017)
GPU code name
Tahiti
Spectre
Market segment
Desktop
Desktop
Release date
November 2012
January 2014
Interface
PCIe 3.0 x16
IGP
Supplementary power connectors
2x 6-pin
-
Boost clock speed
975 MHz
980 MHz
Core clock speed
925 MHz
686 MHz
Floating-point performance
2,995 gflops
526.8 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
2,410 million
Pipelines / CUDA cores
1536
512
Power consumption (TDP)
185 Watt
15 Watt
Texture fill rate
93.60
31.36
Memory type
GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
6000 MHz
System Shared
Memory bandwidth
192.0 GB/s
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.0
Vulkan
1.2.131
1.2.131