AMD Radeon R9 M390 Mac Edition vs ATI Mobility Radeon HD 3870

VS

AMD Radeon R9 M390 Mac Edition ATI Mobility Radeon HD 3870

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 512MB VRAM Mobility Radeon HD 3870 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 11 months late

Larger VRAM bandwidth (174.7GB/s vs 54.40GB/s)

704 additional rendering cores

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +364%

1.962 TFLOPS

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon R9 M390 Mac Edition

VS

Mobility Radeon HD 3870

Graphics Card

May 2015

Release Date

Jun 2008

Crystal System

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1365 MHz

Memory Clock

850 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

174.7GB/s

Bandwidth

54.40GB/s

Render Config

-

SM Count

-

16

Compute Units

4

1024

Shading Units

320

64

TMUs

16

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

10.56 GPixel/s

61.31 GTexel/s

Texture Rate

10.56 GTexel/s

-

FP16 (half)

-

1.962 TFLOPS

FP32 (float)

422.4 GFLOPS

122.6 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

Pitcairn

GPU Name

M88

Pitcairn PRO (215-0828062)

GPU Variant

-

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.666 billion

212 mm²

Die Size

192 mm²

Board Design

80W

TDP

55W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

4.1

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