AMD Radeon HD 7970M vs AMD Radeon 550X Mobile

VS

AMD Radeon HD 7970M

AMD Radeon 550X Mobile

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M 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 7970M 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 48.00GB/s)

640 additional rendering cores

AMD Radeon 550X Mobile 's Advantages

Released 6 years late

Boost Clock1287MHz

More VRAM (4GB vs 2GB)

Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 7970M +32%

2.176 TFLOPS

Radeon 550X Mobile

1.647 TFLOPS

Radeon HD 7970M

VS

Radeon 550X Mobile

Graphics Card

Apr 2012

Release Date

Apr 2018

London

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1100 MHz

-

Boost Clock

1287 MHz

1200 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

48.00GB/s

Render Config

20

Compute Units

10

-

1280

Shading Units

640

80

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

20.59 GPixel/s

68.00 GTexel/s

Texture Rate

51.48 GTexel/s

-

FP16 (half)

1.647 TFLOPS

2.176 TFLOPS

FP32 (float)

1.647 TFLOPS

136.0 GFLOPS

FP64 (double)

103.0 GFLOPS

Board Design

100W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Wimbledon

GPU Name

Polaris 23

Wimbledon XT (216-0836036)

GPU Variant

Polaris 23 MXT

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

2.8 billion

Transistors

2.2 billion

212 mm²

Die Size

103 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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