ATI Mobility Radeon HD 3870 vs AMD Radeon R9 M290X

VS

ATI Mobility Radeon HD 3870

AMD Radeon R9 M290X

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 4GB VRAM Radeon R9 M290X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 100W)

AMD Radeon R9 M290X 's Advantages

Released 5 years and 7 months late

Boost Clock900MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 54.40GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon R9 M290X +445%

2.304 TFLOPS

Mobility Radeon HD 3870

VS

Radeon R9 M290X

Graphics Card

Jun 2008

Release Date

Jan 2014

M8x

Generation

Crystal System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

900 MHz

850 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

4GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

54.40GB/s

Bandwidth

153.6GB/s

Render Config

4

Compute Units

20

-

320

Shading Units

1280

16

TMUs

80

16

ROPs

32

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

28.80 GPixel/s

10.56 GTexel/s

Texture Rate

72.00 GTexel/s

-

422.4 GFLOPS

FP32 (float)

2.304 TFLOPS

84.48 GFLOPS

FP64 (double)

144.0 GFLOPS

Board Design

55W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

M88

GPU Name

Neptune

-

GPU Variant

Neptune XT (216-0847000)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

2.8 billion

192 mm²

Die Size

212 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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