AMD Radeon HD 7850M vs AMD Radeon R9 M280X

VS

AMD Radeon HD 7850M

AMD Radeon R9 M280X

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7850M and 4GB VRAM Radeon R9 M280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M280X 's Advantages

Released 2 years and 10 months late

Boost Clock1000MHz

More VRAM (4GB vs 2GB)

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

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7850M

0.864 TFLOPS

Radeon R9 M280X +107%

1.792 TFLOPS

Radeon HD 7850M

VS

Radeon R9 M280X

Graphics Card

Apr 2012

Release Date

Feb 2015

London

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

1000 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

88.00GB/s

Render Config

10

Compute Units

14

-

640

Shading Units

896

40

TMUs

56

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

16.00 GPixel/s

27.00 GTexel/s

Texture Rate

56.00 GTexel/s

-

864.0 GFLOPS

FP32 (float)

1.792 TFLOPS

54.00 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

40W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Heathrow

GPU Name

Saturn

Heathrow PRO

GPU Variant

Saturn XT (216-0843024)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

2.08 billion

123 mm²

Die Size

160 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2.170

-

5.1

Shader Model

6.5

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