Radeon HD 7950 and Radeon HD 6870 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon HD 6870
Radeon HD 7950
4907
Radeon HD 6870
2285
Radeon HD 7950
Radeon HD 6870
Architecture
GCN 1.0 (2012−2020)
Terascale 2 (2009−2015)
GPU code name
Tahiti
RV940 Barts
Market segment
Desktop
Desktop
Release date
January 2012
October 2010
Bus support
PCIe 3.0 x16
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
2x 6-pin
Boost clock speed
1250 MHz
900 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
2,016.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
4,313 million
1,700 million
Pipelines / CUDA cores
1792
1120
Power consumption (TDP)
200 Watt
151 Watt
Texture fill rate
89.60
50.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
1 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1250 MHz
1050 MHz
Memory bandwidth
240 GB/s
134.4 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
1
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
AppAcceleration
+
-
CrossFire
1
1
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-