AMD Radeon RX 6450M vs NVIDIA GeForce GT 420M

VS

AMD Radeon RX 6450M

NVIDIA GeForce GT 420M

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6450M and 512MB VRAM GeForce GT 420M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6450M 's Advantages

Released 12 years and 4 months late

Boost Clock2460MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 25.60GB/s)

672 additional rendering cores

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 6450M +1868%

3.779 TFLOPS

GeForce GT 420M

0.192 TFLOPS

Radeon RX 6450M

VS

GeForce GT 420M

Graphics Card

Jan 2023

Release Date

Sep 2010

Navi Mobile

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 4.0 x4

Bus Interface

PCIe 2.0 x16

Clock Speeds

2000 MHz

Base Clock

-

2460 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

4GB

Memory Size

512MB

GDDR6

Memory Type

DDR3

64bit

Memory Bus

128bit

128.0GB/s

Bandwidth

25.60GB/s

Render Config

12

Compute Units

-

SM Count

2

768

Shading Units

96

48

TMUs

16

32

ROPs

4

-

12

RT Cores

-

128 KB per Array

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

256 KB

16 MB

L3 Cache

-

Theoretical Performance

78.72 GPixel/s

Pixel Rate

2.000 GPixel/s

118.1 GTexel/s

Texture Rate

8.000 GTexel/s

7.557 TFLOPS

FP16 (half)

-

3.779 TFLOPS

FP32 (float)

192.0 GFLOPS

236.2 GFLOPS

FP64 (double)

16.00 GFLOPS

Board Design

50W

TDP

23W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 24

GPU Name

GF108

Navi 24 XML

GPU Variant

N11P-GE-A1

RDNA 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

6 nm

Process Size

40 nm

5.4 billion

Transistors

0.585 billion

107 mm²

Die Size

116 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

2.1

6.7

Shader Model

5.1

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