AMD Radeon HD 6990M vs AMD Radeon Pro 575X

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 4GB VRAM Radeon Pro 575X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M 's Advantages

Lower TDP (100W vs 150W)

AMD Radeon Pro 575X 's Advantages

Released 7 years and 8 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (217.6GB/s vs 115.2GB/s)

928 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6990M

1.602 TFLOPS

Radeon Pro 575X +180%

4.489 TFLOPS

Radeon HD 6990M

VS

Radeon Pro 575X

Graphics Card

Jul 2011

Release Date

Mar 2019

Vancouver

Generation

Radeon Pro Mac

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1700 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

217.6GB/s

Render Config

-

SM Count

-

14

Compute Units

32

1120

Shading Units

2048

56

TMUs

128

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

2 MB

Theoretical Performance

22.88 GPixel/s

Pixel Rate

35.07 GPixel/s

40.04 GTexel/s

Texture Rate

140.3 GTexel/s

-

FP16 (half)

4.489 TFLOPS

1.602 TFLOPS

FP32 (float)

4.489 TFLOPS

-

FP64 (double)

280.6 GFLOPS

Graphics Processor

Blackcomb

GPU Name

Polaris 20

Blackcomb XTX (216-0811030)

GPU Variant

Polaris 20 XL (215-0910052)

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.7 billion

Transistors

5.7 billion

212 mm²

Die Size

232 mm²

Board Design

100W

TDP

150W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

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

-

CUDA

-

5.0

Shader Model

6.4

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