Radeon HD 6870 and Radeon R9 M270X - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Radeon R9 M270X
Radeon HD 6870
2285
Radeon R9 M270X
1240
Radeon HD 6870
Radeon R9 M270X
Architecture
Terascale 2 (2009−2015)
GCN 1.0 (2012−2020)
GPU code name
RV940 Barts
Venus
Market segment
Desktop
Desktop
Release date
October 2010
March 2014
Bus support
PCIe 2.0 x16
PCIe 3.0 x16
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
-
Boost clock speed
900 MHz
775 MHz
Compute units
-
10
Core clock speed
-
725 MHz
Floating-point performance
2,016.0 gflops
1,536 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
1,500 million
Pipelines / CUDA cores
1120
640
Power consumption (TDP)
151 Watt
-
Texture fill rate
50.40
31.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
1125 MHz
Memory bandwidth
134.4 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
1
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 11
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.4
4.4
Shader Model
5.0
5.1
AppAcceleration
-
-
CrossFire
1
-
DualGraphics
-
1
Enduro
-
-
FreeSync
-
1
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+