AMD Radeon R9 285 vs AMD Radeon HD 8970M
GPU Specs Compare
Graphics Card
Release Date
Sep 2014
May 2013
Generation
Volcanic Islands
Solar System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1375 MHz
1200 MHz
Base Clock
-
850 MHz
Boost Clock
-
900 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
176.0GB/s
153.6GB/s
Render Config
Compute Units
28
20
Shading Units
1792
1280
TMUs
112
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
29.38 GPixel/s
28.80 GPixel/s
Texture Rate
102.8 GTexel/s
72.00 GTexel/s
FP16 (half)
3.290 TFLOPS
-
FP32 (float)
3.290 TFLOPS
2.304 TFLOPS
FP64 (double)
205.6 GFLOPS
144.0 GFLOPS
Graphics Processor
GPU Name
Tonga
Neptune
GPU Variant
Tonga PRO(215-0851128)
Neptune XT(216-0847000)
Architecture
GCN 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
2.8 billion
Die Size
366 mm²
212 mm²
Board Design
TDP
190W
100W
Suggested PSU
450 W
-
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
2x 6-pin
-
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.2.170
1.2
Shader Model
6.5
5.1