AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 6625M

VS

AMD Radeon R9 M390 Mac Edition AMD Radeon HD 6625M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 1024MB VRAM Radeon HD 6625M 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 4 years and 4 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (174.7GB/s vs 25.60GB/s)

544 additional rendering cores

AMD Radeon HD 6625M 's Advantages

Lower TDP (26W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +354%

1.962 TFLOPS

Radeon HD 6625M

0.432 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon HD 6625M

Graphics Card

May 2015

Release Date

Jan 2011

Crystal System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1365 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

174.7GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

16

Compute Units

6

1024

Shading Units

480

64

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

3.600 GPixel/s

61.31 GTexel/s

Texture Rate

10.80 GTexel/s

-

FP16 (half)

-

1.962 TFLOPS

FP32 (float)

432.0 GFLOPS

122.6 GFLOPS

FP64 (double)

-

Graphics Processor

Pitcairn

GPU Name

Whistler

Pitcairn PRO (215-0828062)

GPU Variant

Whistler LP

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.716 billion

212 mm²

Die Size

104 mm²

Board Design

80W

TDP

26W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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