AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 8670M

VS

AMD Radeon R9 M390 Mac Edition AMD Radeon HD 8670M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 1024MB VRAM Radeon HD 8670M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages

Released 2 years and 2 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (174.7GB/s vs 14.40GB/s)

704 additional rendering cores

AMD Radeon HD 8670M 's Advantages

Boost Clock975MHz

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +214%

1.962 TFLOPS

Radeon HD 8670M

0.624 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon HD 8670M

Graphics Card

May 2015

Release Date

Mar 2013

Crystal System

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

1365 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

174.7GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

-

16

Compute Units

5

1024

Shading Units

320

64

TMUs

20

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

7.800 GPixel/s

61.31 GTexel/s

Texture Rate

19.50 GTexel/s

-

FP16 (half)

-

1.962 TFLOPS

FP32 (float)

624.0 GFLOPS

122.6 GFLOPS

FP64 (double)

39.00 GFLOPS

Graphics Processor

Pitcairn

GPU Name

Sun

Pitcairn PRO (215-0828062)

GPU Variant

Sun S3 XT (216-0841009)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

0.69 billion

212 mm²

Die Size

56 mm²

Board Design

80W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

2.1 (1.2)

1.2

Vulkan

1.2.170

-

CUDA

-

5.1

Shader Model

6.5 (5.1)

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