AMD Radeon R9 M390 Mac Edition vs ATI Mobility Radeon HD 4870 X2

VS

AMD Radeon R9 M390 Mac Edition

ATI Mobility Radeon HD 4870 X2

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 1024MB VRAM Mobility Radeon HD 4870 X2 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 6 years and 4 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (174.7GB/s vs 89.60GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +122%

1.962 TFLOPS

Mobility Radeon HD 4870 X2

0.88 TFLOPS

Radeon R9 M390 Mac Edition

VS

Mobility Radeon HD 4870 X2

Graphics Card

May 2015

Release Date

Jan 2009

Crystal System

Generation

M9x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1365 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

174.7GB/s

Bandwidth

89.60GB/s

Render Config

16

Compute Units

10

-

1024

Shading Units

800

64

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

30.66 GPixel/s

Pixel Rate

8.800 GPixel/s

61.31 GTexel/s

Texture Rate

22.00 GTexel/s

-

1.962 TFLOPS

FP32 (float)

880.0 GFLOPS

122.6 GFLOPS

FP64 (double)

176.0 GFLOPS

Board Design

80W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

M98

Pitcairn PRO (215-0828062)

GPU Variant

M98 XT L2 (216-0732023)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.956 billion

212 mm²

Die Size

256 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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