Radeon HD 7870 and Radeon HD 7670 OEM - video card comparison
Radeon HD 7870
Radeon HD 7670 OEM
Architecture
GCN (2011−2017)
TeraScale 2 (2009−2015)
GPU code name
Pitcairn XT
Turks
Market segment
Desktop
Desktop
Release date
March 2012
January 2012
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
None
Core clock speed
1000 MHz
800 MHz
Floating-point performance
-
768.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2800 Million
716 million
Pipelines / CUDA cores
1280
480
Power consumption (TDP)
175 Watt
66 Watt
Texture fill rate
80.00
19.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4800 MHz
4000 MHz
Memory bandwidth
153.6 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x DisplayPort, 1x VGA
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