AMD Radeon RX 6600S vs AMD Radeon HD 6490M

VS

AMD Radeon RX 6600S

AMD Radeon HD 6490M

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6600S 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 6600S 's Advantages

Released 11 years late

Boost Clock2000MHz

More VRAM (4GB vs 512GB)

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

1632 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600S +2700%

7.168 TFLOPS

Radeon HD 6490M

0.256 TFLOPS

Radeon RX 6600S

VS

Radeon HD 6490M

Graphics Card

Jan 2022

Release Date

Jan 2011

Mobility Radeon

Generation

Vancouver

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1700 MHz

Base Clock

-

2000 MHz

Boost Clock

-

1750 MHz

Memory Clock

800 MHz

Memory

4GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

25.60GB/s

Render Config

28

Compute Units

2

-

1792

Shading Units

160

112

TMUs

8

64

ROPs

4

-

28

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

128 KB

32 MB

L3 Cache

-

Theoretical Performance

128.0 GPixel/s

Pixel Rate

3.200 GPixel/s

224.0 GTexel/s

Texture Rate

6.400 GTexel/s

14.34 TFLOPS

FP16 (half)

-

7.168 TFLOPS

FP32 (float)

256.0 GFLOPS

448.0 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

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

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

-

6.5

Shader Model

5.0

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