Radeon R9 270 and Radeon HD 7970 - video card comparison
Passmark - benchmark score Radeon R9 270 vs Radeon HD 7970
Radeon R9 270
4435
Radeon HD 7970
5405
Radeon R9 270
Radeon HD 7970
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Curacao
Tahiti XT
Market segment
Desktop
Desktop
Release date
November 2013
December 2011
Bus support
PCIe 3.0
PCIe 2.1 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
925 MHz
925 MHz
Floating-point performance
2,368 gflops
3,789 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
4,313 million
Pipelines / CUDA cores
1280
2048
Power consumption (TDP)
150 Watt
300 Watt
Texture fill rate
74.00
118.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
-
1375 MHz
Memory bandwidth
179.2 GB/s
264 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
+
HDMI
+
+
DisplayPort support
+
-
DirectX
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
DDMA audio
+
-
Enduro
-
-
FreeSync
1
1
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-