AMD Radeon R9 M385X vs ATI Mobility Radeon HD 3870 X2

VS

AMD Radeon R9 M385X

ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385X and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M385X 's Advantages

Released 6 years and 8 months late

Boost Clock1100MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (76.80GB/s vs 54.40GB/s)

576 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385X +367%

1.971 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

Radeon R9 M385X

VS

Mobility Radeon HD 3870 X2

Graphics Card

May 2015

Release Date

Sep 2008

Gem System

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1100 MHz

Boost Clock

-

1200 MHz

Memory Clock

850 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

76.80GB/s

Bandwidth

54.40GB/s

Render Config

14

Compute Units

4

-

896

Shading Units

320

56

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

17.60 GPixel/s

Pixel Rate

10.56 GPixel/s

61.60 GTexel/s

Texture Rate

10.56 GTexel/s

-

1.971 TFLOPS

FP32 (float)

422.4 GFLOPS

123.2 GFLOPS

FP64 (double)

84.48 GFLOPS

Board Design

Unknown

TDP

110W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Strato

GPU Name

M88

Strato XT

GPU Variant

-

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.08 billion

Transistors

0.666 billion

160 mm²

Die Size

192 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.2.170

Vulkan

N/A

-

6.5

Shader Model

4.1

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