AMD Radeon R9 M270X vs AMD Radeon HD 7870M

VS

AMD Radeon R9 M270X

AMD Radeon HD 7870M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M270X and 2GB VRAM Radeon HD 7870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M270X 's Advantages

Released 2 years and 10 months late

Boost Clock1000MHz

Larger VRAM bandwidth (88.00GB/s vs 64.00GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M270X +50%

1.536 TFLOPS

Radeon HD 7870M

1.024 TFLOPS

Radeon R9 M270X

VS

Radeon HD 7870M

Graphics Card

Feb 2015

Release Date

Apr 2012

Gem System

Generation

London

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1375 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

88.00GB/s

Bandwidth

64.00GB/s

Render Config

12

Compute Units

10

-

768

Shading Units

640

48

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

12.80 GPixel/s

48.00 GTexel/s

Texture Rate

32.00 GTexel/s

-

1.536 TFLOPS

FP32 (float)

1024 GFLOPS

96.00 GFLOPS

FP64 (double)

64.00 GFLOPS

Board Design

Unknown

TDP

45W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Saturn

GPU Name

Heathrow

Saturn PRO (216-0843044)

GPU Variant

Heathrow XT (216-0835033)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

1.5 billion

160 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.2.170

Vulkan

1.2

-

6.5

Shader Model

5.1

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