ATI Mobility Radeon HD 4850 X2 vs AMD Radeon R9 M390 Mac Edition

VS

ATI Mobility Radeon HD 4850 X2

AMD Radeon R9 M390 Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 X2 and 2GB VRAM Radeon R9 M390 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages

Released 6 years and 4 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (174.7GB/s vs 89.60GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 X2

0.8 TFLOPS

Radeon R9 M390 Mac Edition +145%

1.962 TFLOPS

Mobility Radeon HD 4850 X2

VS

Radeon R9 M390 Mac Edition

Graphics Card

Jan 2009

Release Date

May 2015

M9x

Generation

Crystal System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

700 MHz

Memory Clock

1365 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

89.60GB/s

Bandwidth

174.7GB/s

Render Config

10

Compute Units

16

-

800

Shading Units

1024

40

TMUs

64

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

30.66 GPixel/s

20.00 GTexel/s

Texture Rate

61.31 GTexel/s

-

800.0 GFLOPS

FP32 (float)

1.962 TFLOPS

160.0 GFLOPS

FP64 (double)

122.6 GFLOPS

Board Design

Unknown

TDP

80W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

M98

GPU Name

Pitcairn

M98 L2 (216-0732019)

GPU Variant

Pitcairn PRO (215-0828062)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

2.8 billion

256 mm²

Die Size

212 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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