Radeon HD 7870 and Whistler - video card comparison
Radeon HD 7870
Whistler
Architecture
GCN (2011−2017)
TeraScale 2 (2009−2015)
GPU code name
Pitcairn XT
Whistler
Market segment
Desktop
Desktop
Release date
March 2012
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
2x 6-pin
-
Core clock speed
1000 MHz
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
2800 Million
716 million
Pipelines / CUDA cores
1280
480
Power consumption (TDP)
175 Watt
-
Texture fill rate
80.00
-
Memory type
GDDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
256 Bit
-
Memory clock speed
4800 MHz
-
Memory bandwidth
153.6 GB/s
-
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
-
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
N/A