Radeon HD 6970 and Radeon Pro 455 - video card comparison
Passmark - benchmark score Radeon HD 6970 vs Radeon Pro 455
Radeon HD 6970
2921
Radeon Pro 455
3205
Radeon HD 6970
Radeon Pro 455
Architecture
Terascale 2 (2009−2015)
Polaris (2016−2019)
GPU code name
Cayman
Polaris 11
Market segment
Desktop
Mobile workstation
Release date
December 2010
October 2016
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin + 1x 8-pin
None
Boost clock speed
880 MHz
-
Core clock speed
-
855 MHz
Floating-point performance
2,703.4 gflops
1,313 gflops
Manufacturing process technology
40 nm
14 nm
Number of transistors
2,640 million
3,000 million
Pipelines / CUDA cores
1536
768
Power consumption (TDP)
550 Watt
-
Texture fill rate
84.48
41.04
Memory type
DDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1375 MHz
5000 MHz
Memory bandwidth
-
81.28 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12 (12_0)
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.4
Vulkan
-
1.2.131
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
-
+
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-