Radeon R9 285 and Radeon Sky 700 - video card comparison
Radeon R9 285
Radeon Sky 700
Architecture
GCN 3.0 (2014−2017)
GCN 1.0 (2012−2020)
GPU code name
Tonga
Tahiti
Market segment
Desktop
Desktop
Release date
September 2014
March 2013
Bus support
-
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
1x 8-pin
Core clock speed
918 MHz
900 MHz
Floating-point performance
3,290 gflops
3,226 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
4,313 million
Pipelines / CUDA cores
1792
1792
Power consumption (TDP)
190 Watt
225 Watt
Texture fill rate
102.8
100.8
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
5.5 GB/s
5500 MHz
Memory bandwidth
176.0 GB/s
176 GB/s
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
1x DisplayPort
DisplayPort count
-
1
Dual-link DVI support
-
1
HDMI
+
-
DirectX
12 (12_0)
12 (11_1)
OpenCL
2.1
1.2
OpenGL
4.6
4.6
Shader Model
6.5
5.1
Vulkan
1.2.170
1.2.131