Radeon R9 270 and Radeon HD 6970 - video card comparison
Passmark - benchmark score Radeon R9 270 vs Radeon HD 6970
Radeon R9 270
4435
Radeon HD 6970
2921
Radeon R9 270
Radeon HD 6970
Architecture
GCN 1.0 (2012−2020)
Terascale 2 (2009−2015)
GPU code name
Curacao
Cayman
Market segment
Desktop
Desktop
Release date
November 2013
December 2010
Bus support
PCIe 3.0
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1 x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
925 MHz
880 MHz
Floating-point performance
2,368 gflops
2,703.4 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
2,640 million
Pipelines / CUDA cores
1280
1536
Power consumption (TDP)
150 Watt
550 Watt
Texture fill rate
74.00
84.48
Memory type
GDDR5
DDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
-
1375 MHz
Memory bandwidth
179.2 GB/s
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
1
HDMI
+
+
DisplayPort support
+
-
DirectX
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
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-