AMD Radeon HD 8870M vs AMD Radeon 550X Mobile

VS

AMD Radeon HD 8870M

AMD Radeon 550X Mobile

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8870M and 4GB VRAM Radeon 550X Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870M 's Advantages

Larger VRAM bandwidth (72.00GB/s vs 48.00GB/s)

AMD Radeon 550X Mobile 's Advantages

Released 5 years late

Boost Clock has increased by 66% (1287MHz vs 775MHz)

More VRAM (4GB vs 2GB)

Score

Benchmark

FP32 (float)

Radeon HD 8870M

0.992 TFLOPS

Radeon 550X Mobile +66%

1.647 TFLOPS

Radeon HD 8870M

VS

Radeon 550X Mobile

Graphics Card

Apr 2013

Release Date

Apr 2018

Solar System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

725 MHz

Base Clock

1100 MHz

775 MHz

Boost Clock

1287 MHz

1125 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

72.00GB/s

Bandwidth

48.00GB/s

Render Config

10

Compute Units

10

-

640

Shading Units

640

40

TMUs

40

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

20.59 GPixel/s

31.00 GTexel/s

Texture Rate

51.48 GTexel/s

-

FP16 (half)

1.647 TFLOPS

992.0 GFLOPS

FP32 (float)

1.647 TFLOPS

62.00 GFLOPS

FP64 (double)

103.0 GFLOPS

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Venus

GPU Name

Polaris 23

Venus XT (216-0846000)

GPU Variant

Polaris 23 MXT

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.5 billion

Transistors

2.2 billion

123 mm²

Die Size

103 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

-

6.5 (5.1)

Shader Model

6.4

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