AMD Radeon HD 8870M vs AMD Radeon R9 M280X

VS

AMD Radeon HD 8870M

AMD Radeon R9 M280X

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8870M and 4GB VRAM Radeon R9 M280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M280X 's Advantages

Released 1 years and 10 months late

Boost Clock has increased by 29% (1000MHz vs 775MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (88.00GB/s vs 72.00GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870M

0.992 TFLOPS

Radeon R9 M280X +80%

1.792 TFLOPS

Radeon HD 8870M

VS

Radeon R9 M280X

Graphics Card

Apr 2013

Release Date

Feb 2015

Solar System

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

725 MHz

Base Clock

900 MHz

775 MHz

Boost Clock

1000 MHz

1125 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

88.00GB/s

Render Config

10

Compute Units

14

-

640

Shading Units

896

40

TMUs

56

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.40 GPixel/s

Pixel Rate

16.00 GPixel/s

31.00 GTexel/s

Texture Rate

56.00 GTexel/s

-

992.0 GFLOPS

FP32 (float)

1.792 TFLOPS

62.00 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Venus

GPU Name

Saturn

Venus XT (216-0846000)

GPU Variant

Saturn XT (216-0843024)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

2.08 billion

123 mm²

Die Size

160 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.2.170

-

6.5 (5.1)

Shader Model

6.5

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