Radeon HD 7850 and Radeon HD 6870 - video card comparison
Passmark - benchmark score Radeon HD 7850 vs Radeon HD 6870
Radeon HD 7850
3976
Radeon HD 6870
2285
Radeon HD 7850
Radeon HD 6870
Architecture
GCN 1.0 (2012−2020)
Terascale 2 (2009−2015)
GPU code name
Pitcairn
RV940 Barts
Market segment
Desktop
Desktop
Release date
March 2012
October 2010
Bus support
PCIe 2.1 x16
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
2x 6-pin
Boost clock speed
1000 MHz
900 MHz
Floating-point performance
1,761 gflops
2,016.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
1,700 million
Pipelines / CUDA cores
1024
1120
Power consumption (TDP)
130 Watt
151 Watt
Texture fill rate
55.04
50.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1200 MHz
1050 MHz
Memory bandwidth
153.6 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
HDMI
+
+
DisplayPort support
-
-
DirectX
12
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-