Radeon HD 7870 XT and Radeon E8870 - video card comparison
Radeon HD 7870 XT
Radeon E8870
Architecture
GCN 1.0 (2012−2020)
GCN 2.0 (2013−2017)
GPU code name
Tahiti
Saturn
Market segment
Desktop
Desktop
Release date
November 2012
September 2015
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
2x 6-pin
None
Boost clock speed
975 MHz
-
Core clock speed
925 MHz
1000 MHz
Floating-point performance
2,995 gflops
1,536 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
2,080 million
Pipelines / CUDA cores
1536
768
Power consumption (TDP)
185 Watt
75 Watt
Texture fill rate
93.60
48.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
6000 MHz
6000 MHz
Memory bandwidth
192.0 GB/s
96 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
6.3
Vulkan
1.2.131
1.2.131