Radeon HD 6870 and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Radeon HD 6450
Radeon HD 6870
2285
Radeon HD 6450
203
Radeon HD 6870
Radeon HD 6450
Architecture
Terascale 2 (2009−2015)
TeraScale 2 (2009−2015)
GPU code name
RV940 Barts
Caicos
Market segment
Desktop
Desktop
Release date
October 2010
April 2011
Bus support
PCIe 2.0 x16
PCIe 2.0 x8
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
None
Boost clock speed
900 MHz
750 MHz
Floating-point performance
2,016.0 gflops
200.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
370 million
Pipelines / CUDA cores
1120
160
Power consumption (TDP)
151 Watt
30 Watt
Texture fill rate
50.40
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1050 MHz
800 MHz
Memory bandwidth
134.4 GB/s
25.6 GB/s
Memory bandwidth
-
8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
1
1
Number of Eyefinity displays
-
4
HDMI
+
+
DisplayPort support
-
+
DirectX
DirectX® 11
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.4
Shader Model
5.0
5.0
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-