AMD Radeon R9 M390X vs ATI Mobility Radeon HD 4850 Mac Edition

VS

AMD Radeon R9 M390X ATI Mobility Radeon HD 4850 Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M390X and 512MB VRAM Mobility Radeon HD 4850 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Released 5 years and 9 months late

Larger VRAM bandwidth (160.0GB/s vs 54.40GB/s)

1248 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M390X +268%

2.961 TFLOPS

Mobility Radeon HD 4850 Mac Edition

0.804 TFLOPS

Radeon R9 M390X

VS

Mobility Radeon HD 4850 Mac Edition

Graphics Card

May 2015

Release Date

Aug 2009

Crystal System

Generation

M9x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

850 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

54.40GB/s

Render Config

-

SM Count

-

32

Compute Units

10

2048

Shading Units

800

128

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

23.14 GPixel/s

Pixel Rate

8.048 GPixel/s

92.54 GTexel/s

Texture Rate

20.12 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

804.8 GFLOPS

185.1 GFLOPS

FP64 (double)

161.0 GFLOPS

Graphics Processor

Amethyst

GPU Name

M98

Amethyst XT

GPU Variant

M98 L2 (216-0732019)

GCN 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

5 billion

Transistors

0.956 billion

366 mm²

Die Size

256 mm²

Board Design

75W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

6.3

Shader Model

4.1

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