AMD Radeon Pro 580 vs AMD Radeon HD 6990M

VS

AMD Radeon Pro 580

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 8GB VRAM Radeon Pro 580 and 2GB VRAM Radeon HD 6990M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 580 's Advantages

Released 5 years and 11 months late

Boost Clock1200MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (217.0GB/s vs 115.2GB/s)

1184 additional rendering cores

AMD Radeon HD 6990M 's Advantages

Lower TDP (100W vs 185W)

Score

Benchmark

FP32 (float)

Radeon Pro 580 +245%

5.53 TFLOPS

Radeon HD 6990M

1.602 TFLOPS

Radeon Pro 580

VS

Radeon HD 6990M

Graphics Card

Jun 2017

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

-

1695 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

217.0GB/s

Bandwidth

115.2GB/s

Render Config

36

Compute Units

14

-

2304

Shading Units

1120

144

TMUs

56

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

38.40 GPixel/s

Pixel Rate

22.88 GPixel/s

172.8 GTexel/s

Texture Rate

40.04 GTexel/s

5.530 TFLOPS

FP16 (half)

-

5.530 TFLOPS

FP32 (float)

1.602 TFLOPS

345.6 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Ellesmere

GPU Name

Blackcomb

Ellesmere XTA (216-0886220)

GPU Variant

Blackcomb XTX (216-0811030)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

5.7 billion

Transistors

1.7 billion

232 mm²

Die Size

212 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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