Radeon HD 7970 and Radeon R7 250 - video card comparison
Passmark - benchmark score Radeon HD 7970 vs Radeon R7 250
Radeon HD 7970
5405
Radeon R7 250
1100
Radeon HD 7970
Radeon R7 250
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Tahiti XT
Oland XT
Market segment
Desktop
Desktop
Release date
December 2011
October 2013
Bus support
PCIe 2.1 x16
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin + 1x 8-pin
N/A
Boost clock speed
925 MHz
1050 MHz
Floating-point performance
3,789 gflops
716.8 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
950 million
Pipelines / CUDA cores
2048
384
Power consumption (TDP)
300 Watt
75 Watt
Texture fill rate
118.4
25.20
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
6 GB
2 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1375 MHz
1150 MHz
Memory bandwidth
264 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
+
-
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
AppAcceleration
-
+
CrossFire
1
1
DDMA audio
-
+
Enduro
-
-
FreeSync
1
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-