AMD Radeon HD 8870 OEM vs AMD Radeon RX 480 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Jan 2013
Aug 2016
Generation
Sea Islands
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1200 MHz
2000 MHz
Base Clock
—
1000 MHz
Boost Clock
—
1077 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
153.6GB/s
256.0GB/s
Render Config
Compute Units
20
36
Shading Units
1280
2304
TMUs
80
144
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
34.46 GPixel/s
Texture Rate
80.00 GTexel/s
155.1 GTexel/s
FP32 (float)
2.560 TFLOPS
4.963 TFLOPS
FP64 (double)
160.0 GFLOPS
310.2 GFLOPS
FP16 (half)
—
4.963 TFLOPS
Graphics Processor
GPU Name
Pitcairn
Ellesmere
GPU Variant
Pitcairn XT(215-0828047)
Ellesmere XT
Architecture
GCN 1.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
2.8 billion
5.7 billion
Die Size
212 mm²
232 mm²
Board Design
TDP
175W
100W
Suggested PSU
450 W
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.2
1.2
Shader Model
5.1
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.