Radeon R9 285 and Mobility Radeon HD 5870 Crossfire - video card comparison
Radeon R9 285
Mobility Radeon HD 5870 Crossfire
Architecture
GCN 3.0 (2014−2017)
Terascale 2 (2009−2015)
GPU code name
Tonga
Broadway-XT
Market segment
Desktop
Laptop
Release date
September 2014
January 2010
Interface
PCIe 3.0 x16
-
Supplementary power connectors
2x 6-pin
-
Core clock speed
918 MHz
700 MHz
Floating-point performance
3,290 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
5,000 million
-
Pipelines / CUDA cores
1792
1600
Power consumption (TDP)
190 Watt
120 Watt
Texture fill rate
102.8
-
Memory type
GDDR5
DDR3, GDDR3, GDDR5
Maximum RAM amount
2 GB
2x1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
5.5 GB/s
1000 MHz
Memory bandwidth
176.0 GB/s
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
-
HDMI
+
-
DirectX
12 (12_0)
11
OpenCL
2.1
-
OpenGL
4.6
-
Shader Model
6.5
-
Vulkan
1.2.170
-