Radeon HD 8970M Crossfire and Radeon HD 6870 - video card comparison
Radeon HD 8970M Crossfire
Radeon HD 6870
Architecture
GCN (2011−2017)
Terascale 2 (2009−2015)
GPU code name
Neptune CF
RV940 Barts
Market segment
Laptop
Desktop
Release date
May 2012
October 2010
Bus support
-
PCIe 2.0 x16
Interface
-
PCIe 2.0 x16
Supplementary power connectors
-
2x 6-pin
Boost clock speed
900 MHz
900 MHz
Core clock speed
850 MHz
-
Floating-point performance
-
2,016.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
-
1,700 million
Pipelines / CUDA cores
2560
1120
Power consumption (TDP)
200 Watt
151 Watt
Texture fill rate
-
50.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
-
1 GB
Memory bus width
2x 256 Bit
256 Bit
Memory clock speed
4800 MHz
1050 MHz
Memory bandwidth
-
134.4 GB/s
Shared memory
-
-
Display Connectors
-
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
-
1
HDMI
-
+
DisplayPort support
-
-
DirectX
11.1
DirectX® 11
Mantle
-
-
OpenCL
-
1.2
OpenGL
-
4.4
Shader Model
-
5.0
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-