AMD Radeon HD 8670A vs AMD Radeon R9 M295X Mac Edition

VS

AMD Radeon HD 8670A

AMD Radeon R9 M295X Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 4GB VRAM Radeon R9 M295X Mac Edition 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 M295X Mac Edition 's Advantages

Released 1 years and 9 months late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (174.3GB/s vs 16.00GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Radeon R9 M295X Mac Edition +655%

3.482 TFLOPS

Radeon HD 8670A

VS

Radeon R9 M295X Mac Edition

Graphics Card

Feb 2013

Release Date

Nov 2014

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

1362 MHz

Memory

1024MB

Memory Size

4GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

16.00GB/s

Bandwidth

174.3GB/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

27.20 GPixel/s

14.40 GTexel/s

Texture Rate

108.8 GTexel/s

-

FP16 (half)

3.482 TFLOPS

460.8 GFLOPS

FP32 (float)

3.482 TFLOPS

28.80 GFLOPS

FP64 (double)

217.6 GFLOPS

Board Design

45W

TDP

250W

-

No outputs

Outputs

No outputs

-

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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