Radeon HD 6970 and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon HD 6970 vs Radeon HD 6450
Radeon HD 6970
2921
Radeon HD 6450
203
Radeon HD 6970
Radeon HD 6450
Architecture
Terascale 2 (2009−2015)
TeraScale 2 (2009−2015)
GPU code name
Cayman
Caicos
Market segment
Desktop
Desktop
Release date
December 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
1x 6-pin + 1x 8-pin
None
Boost clock speed
880 MHz
750 MHz
Floating-point performance
2,703.4 gflops
200.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
2,640 million
370 million
Pipelines / CUDA cores
1536
160
Power consumption (TDP)
550 Watt
30 Watt
Texture fill rate
84.48
5.000
Memory type
DDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1375 MHz
800 MHz
Memory bandwidth
-
25.6 GB/s
Memory bandwidth
-
8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)
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
-
-