AMD Radeon RX 6650M XT vs NVIDIA GeForce GT 420M

VS

AMD Radeon RX 6650M XT

NVIDIA GeForce GT 420M

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6650M XT 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 6650M XT 's Advantages

Released 11 years and 4 months late

Boost Clock2416MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 25.60GB/s)

1952 additional rendering cores

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 120W)

Score

Benchmark

FP32 (float)

Radeon RX 6650M XT +5054%

9.896 TFLOPS

GeForce GT 420M

0.192 TFLOPS

Radeon RX 6650M XT

VS

GeForce GT 420M

Graphics Card

Jan 2022

Release Date

Sep 2010

Mobility Radeon

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

2068 MHz

Base Clock

-

2416 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

DDR3

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

25.60GB/s

Render Config

32

Compute Units

-

SM Count

2

2048

Shading Units

96

128

TMUs

16

64

ROPs

4

-

32

RT Cores

-

128 KB per Array

L1 Cache

64 KB (per SM)

2 MB

L2 Cache

256 KB

32 MB

L3 Cache

-

Theoretical Performance

154.6 GPixel/s

Pixel Rate

2.000 GPixel/s

309.2 GTexel/s

Texture Rate

8.000 GTexel/s

19.79 TFLOPS

FP16 (half)

-

9.896 TFLOPS

FP32 (float)

192.0 GFLOPS

618.5 GFLOPS

FP64 (double)

16.00 GFLOPS

Board Design

120W

TDP

23W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 23

GPU Name

GF108

-

GPU Variant

N11P-GE-A1

RDNA 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

0.585 billion

237 mm²

Die Size

116 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

2.1

6.5

Shader Model

5.1

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