AMD Radeon HD 6990M vs AMD Radeon Pro Vega 20

VS

AMD Radeon HD 6990M AMD Radeon Pro Vega 20

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 4GB VRAM Radeon Pro Vega 20 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro Vega 20 's Advantages

Released 7 years and 4 months late

Boost Clock1283MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (189.4GB/s vs 115.2GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6990M

1.602 TFLOPS

Radeon Pro Vega 20 +104%

3.284 TFLOPS

Radeon HD 6990M

VS

Radeon Pro Vega 20

Graphics Card

Jul 2011

Release Date

Nov 2018

Vancouver

Generation

Radeon Pro Mac

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

815 MHz

-

Boost Clock

1283 MHz

900 MHz

Memory Clock

740 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

HBM2

256bit

Memory Bus

1024bit

115.2GB/s

Bandwidth

189.4GB/s

Render Config

-

SM Count

-

14

Compute Units

20

1120

Shading Units

1280

56

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

Theoretical Performance

22.88 GPixel/s

Pixel Rate

41.06 GPixel/s

40.04 GTexel/s

Texture Rate

102.6 GTexel/s

-

FP16 (half)

6.569 TFLOPS

1.602 TFLOPS

FP32 (float)

3.284 TFLOPS

-

FP64 (double)

205.3 GFLOPS

Graphics Processor

Blackcomb

GPU Name

Vega 12

Blackcomb XTX (216-0811030)

GPU Variant

Vega 12 XTA

TeraScale 2

Architecture

GCN 5.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.7 billion

Transistors

Unknown

212 mm²

Die Size

Unknown

Board Design

100W

TDP

100W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

6.3

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