Radeon HD 7870 XT and Radeon Sky 900 - video card comparison
Radeon HD 7870 XT
Radeon Sky 900
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Tahiti
Tahiti
Market segment
Desktop
Desktop
Release date
November 2012
March 2013
Bus support
-
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
2x 8-pin
Boost clock speed
975 MHz
950 MHz
Core clock speed
925 MHz
825 MHz
Floating-point performance
2,995 gflops
2x 3,405 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
4,313 million
Pipelines / CUDA cores
1536
3584
Power consumption (TDP)
185 Watt
300 Watt
Texture fill rate
93.60
106.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
6000 MHz
5000 MHz
Memory bandwidth
192.0 GB/s
480 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x mini-DisplayPort
Dual-link DVI support
-
1
HDMI
+
-
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.2.131