AMD Radeon HD 6990M Rebrand vs AMD Radeon Pro 580

VS

AMD Radeon HD 6990M Rebrand

AMD Radeon Pro 580

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

Main Differences

AMD Radeon HD 6990M Rebrand 's Advantages

Lower TDP (100W vs 185W)

AMD Radeon Pro 580 's Advantages

Released 5 years and 11 months late

Boost Clock1200MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (217.0GB/s vs 70.40GB/s)

1504 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon Pro 580 +332%

5.53 TFLOPS

Radeon HD 6990M Rebrand

VS

Radeon Pro 580

Graphics Card

Jul 2011

Release Date

Jun 2017

Vancouver

Generation

Radeon Pro Mac

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1100 MHz

-

Boost Clock

1200 MHz

1100 MHz

Memory Clock

1695 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

70.40GB/s

Bandwidth

217.0GB/s

Render Config

14

Compute Units

36

-

800

Shading Units

2304

40

TMUs

144

16

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

38.40 GPixel/s

32.00 GTexel/s

Texture Rate

172.8 GTexel/s

-

FP16 (half)

5.530 TFLOPS

1280 GFLOPS

FP32 (float)

5.530 TFLOPS

-

FP64 (double)

345.6 GFLOPS

Board Design

100W

TDP

185W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Broadway

GPU Name

Ellesmere

Broadway XTX

GPU Variant

Ellesmere XTA (216-0886220)

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.04 billion

Transistors

5.7 billion

166 mm²

Die Size

232 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

5.0

Shader Model

6.4

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