AMD Radeon Pro 555X vs ATI Mobility Radeon X1900

VS

AMD Radeon Pro 555X

ATI Mobility Radeon X1900

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 256MB VRAM Mobility Radeon X1900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 11 years and 6 months late

More VRAM (4GB vs 256GB)

Larger VRAM bandwidth (94.08GB/s vs 30.08GB/s)

768 additional rendering cores

Score

Radeon Pro 555X

VS

Mobility Radeon X1900

Graphics Card

Jul 2018

Release Date

Jan 2007

Radeon Pro Mac

Generation

M6x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-III

Clock Speeds

-

1470 MHz

Memory Clock

470 MHz

Memory

4GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

94.08GB/s

Bandwidth

30.08GB/s

Render Config

12

Compute Units

-

768

Shading Units

-

48

TMUs

12

16

ROPs

12

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

-

Theoretical Performance

14.51 GPixel/s

Pixel Rate

4.800 GPixel/s

43.54 GTexel/s

Texture Rate

4.800 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

-

87.07 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Polaris 21

GPU Name

M68

Polaris 21 PRO

GPU Variant

-

GCN 4.0

Architecture

Ultra-Threaded SE

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

80 nm

3 billion

Transistors

0.312 billion

123 mm²

Die Size

230 mm²

Graphics Features

12 (12_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

OpenCL

N/A

1.2

Vulkan

N/A

-

6.4

Shader Model

3.0

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