AMD Radeon RX 6300M vs AMD Radeon HD 6990M Rebrand

VS

AMD Radeon RX 6300M

AMD Radeon HD 6990M Rebrand

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 6300M and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6300M 's Advantages

Released 10 years and 6 months late

Boost Clock2400MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (72.00GB/s vs 70.40GB/s)

Lower TDP (35W vs 100W)

AMD Radeon HD 6990M Rebrand 's Advantages

32 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6300M +187%

3.686 TFLOPS

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon RX 6300M

VS

Radeon HD 6990M Rebrand

Graphics Card

Jan 2022

Release Date

Jul 2011

Mobility Radeon

Generation

Vancouver

Mobile

Type

Mobile

PCIe 4.0 x4

Bus Interface

MXM-B (3.0)

Clock Speeds

2000 MHz

Base Clock

-

2400 MHz

Boost Clock

-

2250 MHz

Memory Clock

1100 MHz

Memory

2GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

32bit

Memory Bus

128bit

72.00GB/s

Bandwidth

70.40GB/s

Render Config

12

Compute Units

14

-

768

Shading Units

800

48

TMUs

40

32

ROPs

16

-

12

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

1024 KB

L2 Cache

256 KB

8 MB

L3 Cache

-

Theoretical Performance

76.80 GPixel/s

Pixel Rate

12.80 GPixel/s

115.2 GTexel/s

Texture Rate

32.00 GTexel/s

7.373 TFLOPS

FP16 (half)

-

3.686 TFLOPS

FP32 (float)

1280 GFLOPS

230.4 GFLOPS

FP64 (double)

-

Board Design

35W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 24

GPU Name

Broadway

Navi 24 XML

GPU Variant

Broadway XTX

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

6 nm

Process Size

40 nm

5.4 billion

Transistors

1.04 billion

107 mm²

Die Size

166 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.2

OpenCL

1.2

1.3

Vulkan

N/A

-

6.6

Shader Model

5.0

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