AMD Radeon HD 8670A vs AMD Radeon R9 M485X

VS

AMD Radeon HD 8670A

AMD Radeon R9 M485X

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 8GB VRAM Radeon R9 M485X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Lower TDP (45W vs 250W)

AMD Radeon R9 M485X 's Advantages

Released 3 years and 3 months late

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 16.00GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Radeon R9 M485X +542%

2.961 TFLOPS

Radeon HD 8670A

VS

Radeon R9 M485X

Graphics Card

Feb 2013

Release Date

May 2016

All-In-One

Generation

Crystal System

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1000 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

8GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

16.00GB/s

Bandwidth

160.0GB/s

Render Config

6

Compute Units

32

-

384

Shading Units

2048

24

TMUs

128

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

512 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

23.14 GPixel/s

14.40 GTexel/s

Texture Rate

92.54 GTexel/s

-

FP16 (half)

2.961 TFLOPS

460.8 GFLOPS

FP32 (float)

2.961 TFLOPS

28.80 GFLOPS

FP64 (double)

185.1 GFLOPS

Board Design

45W

TDP

250W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Mars

GPU Name

Amethyst

Mars XT

GPU Variant

Amethyst XT

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

5 billion

77 mm²

Die Size

366 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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