ATI Mobility Radeon HD 3870 vs AMD Radeon R9 M365X

VS

ATI Mobility Radeon HD 3870

AMD Radeon R9 M365X

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 4GB VRAM Radeon R9 M365X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M365X 's Advantages

Released 6 years and 11 months late

Boost Clock925MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 54.40GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon R9 M365X +180%

1.184 TFLOPS

Mobility Radeon HD 3870

VS

Radeon R9 M365X

Graphics Card

Jun 2008

Release Date

May 2015

M8x

Generation

Gem System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

925 MHz

850 MHz

Memory Clock

1125 MHz

Memory

512MB

Memory Size

4GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

72.00GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

640

16

TMUs

40

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

14.80 GPixel/s

10.56 GTexel/s

Texture Rate

37.00 GTexel/s

-

422.4 GFLOPS

FP32 (float)

1184 GFLOPS

84.48 GFLOPS

FP64 (double)

74.00 GFLOPS

Board Design

55W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M88

GPU Name

Tropo

-

GPU Variant

Tropo XT

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

1.5 billion

192 mm²

Die Size

123 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

N/A

OpenCL

2.1 (1.2)

N/A

Vulkan

1.2.170

-

4.1

Shader Model

6.5 (5.1)

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