NVIDIA GeForce RTX 5090 Mobile vs AMD Radeon HD 6450A

VS

NVIDIA GeForce RTX 5090 Mobile

AMD Radeon HD 6450A

We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 5090 Mobile and 512MB VRAM Radeon HD 6450A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 5090 Mobile 's Advantages

Released 13 years and 9 months late

Boost Clock2000MHz

More VRAM (16GB vs 512GB)

Larger VRAM bandwidth (1.01TB/s vs 8.528GB/s)

10592 additional rendering cores

AMD Radeon HD 6450A 's Advantages

Lower TDP (25W vs 175W)

Score

Benchmark

FP32 (float)

GeForce RTX 5090 Mobile +21405%

43.01 TFLOPS

Radeon HD 6450A

0.2 TFLOPS

GeForce RTX 5090 Mobile

VS

Radeon HD 6450A

Graphics Card

Jan 2025

Release Date

Apr 2011

GeForce 50 Mobile

Generation

All-In-One

Mobile

Type

Mobile

PCIe 5.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

1500 MHz

Base Clock

-

2000 MHz

Boost Clock

-

2500 MHz

Memory Clock

533 MHz

Memory

16GB

Memory Size

512MB

GDDR7

Memory Type

DDR3

256bit

Memory Bus

64bit

1.01TB/s

Bandwidth

8.528GB/s

Render Config

-

Compute Units

2

84

SM Count

-

10752

Shading Units

160

336

TMUs

8

128

ROPs

4

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

8 KB (per CU)

64 MB

L2 Cache

128 KB

-

Theoretical Performance

256.0 GPixel/s

Pixel Rate

2.500 GPixel/s

672.0 GTexel/s

Texture Rate

5.000 GTexel/s

43.01 TFLOPS

FP16 (half)

-

43.01 TFLOPS

FP32 (float)

200.0 GFLOPS

672.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

25W

550 W

Suggested PSU

-

1x HDMI 2.13x DisplayPort 1.4a

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

GB203

GPU Name

Caicos

-

Blackwell 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

4 nm

Process Size

40 nm

Unknown

Transistors

0.37 billion

377 mm²

Die Size

67 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.3

Vulkan

N/A

10.1

CUDA

-

6.8

Shader Model

5.0

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