Radeon HD 6870 and Radeon HD 6770 - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Radeon HD 6770
Radeon HD 6870
2285
Radeon HD 6770
1286
Radeon HD 6870
Radeon HD 6770
Architecture
Terascale 2 (2009−2015)
TeraScale 2 (2009−2015)
GPU code name
RV940 Barts
Juniper
Market segment
Desktop
Desktop
Release date
October 2010
January 2011
Bus support
PCIe 2.0 x16
PCIe 2.0 x16
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
Boost clock speed
900 MHz
900 MHz
Floating-point performance
2,016.0 gflops
1,360.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
1,040 million
Pipelines / CUDA cores
1120
800
Power consumption (TDP)
151 Watt
108 Watt
Texture fill rate
50.40
34.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
1050 MHz
Memory bandwidth
134.4 GB/s
76.8 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
1
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.4
Shader Model
5.0
5.0
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-