Radeon HD 7950 and Radeon R9 270X - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon R9 270X
Radeon HD 7950
4907
Radeon R9 270X
5036
Radeon HD 7950
Radeon R9 270X
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Tahiti
Curacao XT
Market segment
Desktop
Desktop
Release date
January 2012
October 2013
Bus support
PCIe 3.0 x16
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
2 x 6-pin
Boost clock speed
1250 MHz
1050 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
2,688 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
2,800 million
Pipelines / CUDA cores
1792
1280
Power consumption (TDP)
200 Watt
180 Watt
Texture fill rate
89.60
84.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1250 MHz
-
Memory bandwidth
240 GB/s
179.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
1
+
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
+
DirectX
DirectX® 11
DirectX® 12
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
+
-