AMD Radeon Pro 555X vs ATI Mobility Radeon HD 2600 XT Mac Edition

VS

AMD Radeon Pro 555X

ATI Mobility Radeon HD 2600 XT Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 256MB VRAM Mobility Radeon HD 2600 XT Mac Edition 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 late

More VRAM (4GB vs 256GB)

Larger VRAM bandwidth (94.08GB/s vs 21.92GB/s)

648 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro 555X +867%

1.393 TFLOPS

Mobility Radeon HD 2600 XT Mac Edition

0.144 TFLOPS

Radeon Pro 555X

VS

Mobility Radeon HD 2600 XT Mac Edition

Graphics Card

Jul 2018

Release Date

Jul 2007

Radeon Pro Mac

Generation

M7x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-II

Clock Speeds

-

1470 MHz

Memory Clock

685 MHz

Memory

4GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

94.08GB/s

Bandwidth

21.92GB/s

Render Config

12

Compute Units

3

-

768

Shading Units

120

48

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

64 KB

-

Theoretical Performance

14.51 GPixel/s

Pixel Rate

2.400 GPixel/s

43.54 GTexel/s

Texture Rate

4.800 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

144.0 GFLOPS

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

M76

Polaris 21 PRO

GPU Variant

M76 XT-M (216XJBKA13FG)

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

65 nm

3 billion

Transistors

0.39 billion

123 mm²

Die Size

153 mm²

Graphics Features

12 (12_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.2

Vulkan

N/A

-

6.4

Shader Model

4.0

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