Radeon HD 7850 and Radeon HD 6970 X2 - video card comparison
Radeon HD 7850
Radeon HD 6970 X2
Architecture
GCN 1.0 (2012−2020)
TeraScale 3 (2010−2013)
GPU code name
Pitcairn
Antilles
Market segment
Desktop
Desktop
Release date
March 2012
-
Bus support
PCIe 2.1 x16
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
3x 8-pin
Boost clock speed
1000 MHz
-
Core clock speed
-
880 MHz
Floating-point performance
1,761 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
2,640 million
Pipelines / CUDA cores
1024
1536
Power consumption (TDP)
130 Watt
375 Watt
Texture fill rate
55.04
84.48
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1200 MHz
5.5 GB/s
Memory bandwidth
153.6 GB/s
176.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2
Eyefinity
1
-
HDMI
+
+
DisplayPort support
-
-
DirectX
12
11.2 (11_0)
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
+
N/A
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-