AMD Radeon Pro 580X vs AMD Radeon HD 6990M Rebrand

VS

AMD Radeon Pro 580X

AMD Radeon HD 6990M Rebrand

We compared two Mobile platform GPUs: 8GB VRAM Radeon Pro 580X and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 580X 's Advantages

Released 7 years and 8 months late

Boost Clock1200MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (218.9GB/s vs 70.40GB/s)

1504 additional rendering cores

AMD Radeon HD 6990M Rebrand 's Advantages

Lower TDP (100W vs 185W)

Score

Benchmark

FP32 (float)

Radeon Pro 580X +332%

5.53 TFLOPS

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon Pro 580X

VS

Radeon HD 6990M Rebrand

Graphics Card

Mar 2019

Release Date

Jul 2011

Radeon Pro Mac

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

1100 MHz

Base Clock

-

1200 MHz

Boost Clock

-

1710 MHz

Memory Clock

1100 MHz

Memory

8GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

218.9GB/s

Bandwidth

70.40GB/s

Render Config

36

Compute Units

14

-

2304

Shading Units

800

144

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

38.40 GPixel/s

Pixel Rate

12.80 GPixel/s

172.8 GTexel/s

Texture Rate

32.00 GTexel/s

5.530 TFLOPS

FP16 (half)

-

5.530 TFLOPS

FP32 (float)

1280 GFLOPS

345.6 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

100W

-

2x HDMI 2.0b

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Ellesmere

GPU Name

Broadway

Ellesmere XTA (216-0886220)

GPU Variant

Broadway XTX

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

5.7 billion

Transistors

1.04 billion

232 mm²

Die Size

166 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

6.4

Shader Model

5.0

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