Radeon HD 6870 and Radeon R7 250 - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Radeon R7 250
Radeon HD 6870
2285
Radeon R7 250
1100
Radeon HD 6870
Radeon R7 250
Architecture
Terascale 2 (2009−2015)
GCN (2011−2017)
GPU code name
RV940 Barts
Oland XT
Market segment
Desktop
Desktop
Release date
October 2010
October 2013
Bus support
PCIe 2.0 x16
PCIe 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
N/A
Boost clock speed
900 MHz
1050 MHz
Floating-point performance
2,016.0 gflops
716.8 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
950 million
Pipelines / CUDA cores
1120
384
Power consumption (TDP)
151 Watt
75 Watt
Texture fill rate
50.40
25.20
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
1150 MHz
Memory bandwidth
134.4 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
1
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 12
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
AppAcceleration
-
+
CrossFire
1
1
DDMA audio
-
+
Enduro
-
-
FreeSync
-
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-