AMD Radeon RX 6600M vs AMD Radeon HD 6490M

VS

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6600M and 512MB VRAM Radeon HD 6490M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600M 's Advantages

Released 10 years and 4 months late

Boost Clock2416MHz

Larger VRAM bandwidth (224.0GB/s vs 25.60GB/s)

1632 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600M +3282%

8.659 TFLOPS

Radeon HD 6490M

0.256 TFLOPS

Radeon RX 6600M

VS

Radeon HD 6490M

Graphics Card

May 2021

Release Date

Jan 2011

Mobility Radeon

Generation

Vancouver

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

2068 MHz

Base Clock

-

2416 MHz

Boost Clock

-

1750 MHz

Memory Clock

800 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

28

Compute Units

2

1792

Shading Units

160

112

TMUs

8

64

ROPs

4

-

Tensor Cores

-

28

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

128 KB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

3.200 GPixel/s

270.6 GTexel/s

Texture Rate

6.400 GTexel/s

17.32 TFLOPS

FP16 (half)

-

8.659 TFLOPS

FP32 (float)

256.0 GFLOPS

541.2 GFLOPS

FP64 (double)

-

Graphics Processor

Navi 23

GPU Name

Seymour

-

GPU Variant

Seymour XTX S3 (216-0809024)

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

0.37 billion

237 mm²

Die Size

67 mm²

Board Design

100W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.3

Vulkan

N/A

-

CUDA

-

6.5

Shader Model

5.0

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