AMD Radeon HD 6990M Rebrand vs AMD Radeon 620 Mobile

VS

AMD Radeon HD 6990M Rebrand

AMD Radeon 620 Mobile

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6990M Rebrand and 2GB VRAM Radeon 620 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M Rebrand 's Advantages

Larger VRAM bandwidth (70.40GB/s vs 14.40GB/s)

416 additional rendering cores

AMD Radeon 620 Mobile 's Advantages

Released 7 years and 10 months late

Boost Clock1024MHz

More VRAM (2GB vs 1024GB)

Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 6990M Rebrand +62%

1.28 TFLOPS

Radeon 620 Mobile

0.786 TFLOPS

Radeon HD 6990M Rebrand

VS

Radeon 620 Mobile

Graphics Card

Jul 2011

Release Date

May 2019

Vancouver

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

730 MHz

-

Boost Clock

1024 MHz

1100 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

70.40GB/s

Bandwidth

14.40GB/s

Render Config

14

Compute Units

6

-

800

Shading Units

384

40

TMUs

24

16

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

8.192 GPixel/s

32.00 GTexel/s

Texture Rate

24.58 GTexel/s

-

FP16 (half)

786.4 GFLOPS

1280 GFLOPS

FP32 (float)

786.4 GFLOPS

-

FP64 (double)

49.15 GFLOPS

Board Design

100W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Broadway

GPU Name

Polaris 24

Broadway XTX

GPU Variant

Polaris 24 XL

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

1.55 billion

166 mm²

Die Size

125 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

5.0

Shader Model

6.3

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