AMD Radeon HD 6490M vs AMD Radeon RX 7800M

VS

AMD Radeon HD 6490M

AMD Radeon RX 7800M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6490M and 12GB VRAM Radeon RX 7800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800M 's Advantages

Released 13 years and 8 months late

Boost Clock2145MHz

More VRAM (12GB vs 512GB)

Larger VRAM bandwidth (432GB/s vs 25.60GB/s)

3680 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M

0.256 TFLOPS

Radeon RX 7800M +13911%

35.87 TFLOPS

Radeon HD 6490M

VS

Radeon RX 7800M

Graphics Card

Jan 2011

Release Date

Sep 2024

Vancouver

Generation

Navi Mobile

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2145 MHz

800 MHz

Memory Clock

2250 MHz

Memory

512MB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

64bit

Memory Bus

192bit

25.60GB/s

Bandwidth

432GB/s

Render Config

2

Compute Units

60

-

160

Shading Units

3840

8

TMUs

240

4

ROPs

96

-

RT Cores

60

8 KB (per CU)

L1 Cache

256 KB per Array

128 KB

L2 Cache

6 MB

-

L3 Cache

48 MB

Theoretical Performance

3.200 GPixel/s

Pixel Rate

401.3 GPixel/s

6.400 GTexel/s

Texture Rate

560.4 GTexel/s

-

FP16 (half)

71.73 TFLOPS

256.0 GFLOPS

FP32 (float)

35.87 TFLOPS

-

FP64 (double)

1121 GFLOPS

Board Design

Unknown

TDP

180W

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

Seymour

GPU Name

Navi 32

Seymour XTX S3 (216-0809024)

GPU Variant

Navi 32

TeraScale 2

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

0.37 billion

Transistors

28.1 billion

67 mm²

Die Size

529 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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