AMD Radeon R9 M290X vs AMD Radeon HD 6870M

VS

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M290X and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M290X 's Advantages

Released 3 years late

Boost Clock900MHz

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (153.6GB/s vs 64.00GB/s)

480 additional rendering cores

AMD Radeon HD 6870M 's Advantages

Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)

Radeon R9 M290X +113%

2.304 TFLOPS

Radeon HD 6870M

1.08 TFLOPS

Radeon R9 M290X

VS

Radeon HD 6870M

Graphics Card

Jan 2014

Release Date

Jan 2011

Crystal System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

850 MHz

Base Clock

-

900 MHz

Boost Clock

-

1200 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

20

Compute Units

10

1280

Shading Units

800

80

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

10.80 GPixel/s

72.00 GTexel/s

Texture Rate

27.00 GTexel/s

-

FP16 (half)

-

2.304 TFLOPS

FP32 (float)

1080 GFLOPS

144.0 GFLOPS

FP64 (double)

-

Graphics Processor

Neptune

GPU Name

Granville

Neptune XT (216-0847000)

GPU Variant

Granville XT (216-0769024)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.04 billion

212 mm²

Die Size

166 mm²

Board Design

100W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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