Radeon R9 285 and Radeon HD 6670 - video card comparison
Passmark - benchmark score Radeon R9 285 vs Radeon HD 6670
Radeon R9 285
6880
Radeon HD 6670
752
Radeon R9 285
Radeon HD 6670
Architecture
GCN 3.0 (2014−2017)
TeraScale 2 (2009−2015)
GPU code name
Tonga
Turks
Market segment
Desktop
Desktop
Release date
September 2014
April 2011
Bus support
-
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
800 MHz
Core clock speed
918 MHz
-
Floating-point performance
3,290 gflops
768.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
5,000 million
716 million
Pipelines / CUDA cores
1792
480
Power consumption (TDP)
190 Watt
66 Watt
Texture fill rate
102.8
19.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
5.5 GB/s
1050 MHz
Memory bandwidth
176.0 GB/s
64 GB/s
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
1x DVI, 1x HDMI, 1x VGA
Eyefinity
-
1
HDMI
+
+
DisplayPort support
-
-
DirectX
12 (12_0)
DirectX® 11
Mantle
-
-
OpenCL
2.1
1.2
OpenGL
4.6
4.4
Shader Model
6.5
5.0
Vulkan
1.2.170
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-