Radeon HD 7850 and Radeon HD 7970 GHz Edition - video card comparison
Radeon HD 7850
Radeon HD 7970 GHz Edition
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Pitcairn
Tahiti
Market segment
Desktop
Desktop
Release date
March 2012
June 2012
Bus support
PCIe 2.1 x16
PCIe 2.1 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
1000 MHz
1050 MHz
Floating-point performance
1,761 gflops
4,301 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
4,313 million
Pipelines / CUDA cores
1024
2048
Power consumption (TDP)
130 Watt
250 Watt
Texture fill rate
55.04
134.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
1200 MHz
1500 MHz
Memory bandwidth
153.6 GB/s
288 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x 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
4.6
Shader Model
5.1
5.1
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
FreeSync
1
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-