AMD Radeon 550X Mobile vs AMD Radeon HD 7870M

VS

AMD Radeon 550X Mobile

AMD Radeon HD 7870M

We compared two Mobile platform GPUs: 4GB VRAM Radeon 550X Mobile and 2GB VRAM Radeon HD 7870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X Mobile 's Advantages

Released 6 years late

Boost Clock1287MHz

More VRAM (4GB vs 2GB)

AMD Radeon HD 7870M 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 48.00GB/s)

Lower TDP (45W vs 50W)

Score

Benchmark

FP32 (float)

Radeon 550X Mobile +60%

1.647 TFLOPS

Radeon HD 7870M

1.024 TFLOPS

Radeon 550X Mobile

VS

Radeon HD 7870M

Graphics Card

Apr 2018

Release Date

Apr 2012

Mobility Radeon

Generation

London

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1100 MHz

Base Clock

-

1287 MHz

Boost Clock

-

1500 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

64.00GB/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

20.59 GPixel/s

Pixel Rate

12.80 GPixel/s

51.48 GTexel/s

Texture Rate

32.00 GTexel/s

1.647 TFLOPS

FP16 (half)

-

1.647 TFLOPS

FP32 (float)

1024 GFLOPS

103.0 GFLOPS

FP64 (double)

64.00 GFLOPS

Board Design

50W

TDP

45W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 23

GPU Name

Heathrow

Polaris 23 MXT

GPU Variant

Heathrow XT (216-0835033)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

1.5 billion

103 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

6.4

Shader Model

5.1

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