NVIDIA GeForce GT 420M vs AMD Radeon RX 6800M

VS

NVIDIA GeForce GT 420M

AMD Radeon RX 6800M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 12GB VRAM Radeon RX 6800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 145W)

AMD Radeon RX 6800M 's Advantages

Released 10 years and 8 months late

Boost Clock2390MHz

More VRAM (12GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 25.60GB/s)

2464 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

Radeon RX 6800M +6275%

12.24 TFLOPS

GeForce GT 420M

VS

Radeon RX 6800M

Graphics Card

Sep 2010

Release Date

May 2021

GeForce 400M

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2116 MHz

-

Boost Clock

2390 MHz

800 MHz

Memory Clock

2000 MHz

Memory

512MB

Memory Size

12GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

192bit

25.60GB/s

Bandwidth

384.0GB/s

Render Config

-

Compute Units

40

2

SM Count

-

96

Shading Units

2560

16

TMUs

160

4

ROPs

64

-

RT Cores

40

64 KB (per SM)

L1 Cache

128 KB per Array

256 KB

L2 Cache

3 MB

-

L3 Cache

96 MB

Theoretical Performance

2.000 GPixel/s

Pixel Rate

153.0 GPixel/s

8.000 GTexel/s

Texture Rate

382.4 GTexel/s

-

FP16 (half)

24.47 TFLOPS

192.0 GFLOPS

FP32 (float)

12.24 TFLOPS

16.00 GFLOPS

FP64 (double)

764.8 GFLOPS

Board Design

23W

TDP

145W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GF108

GPU Name

Navi 22

N11P-GE-A1

GPU Variant

Navi 22 XTM

Fermi

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

0.585 billion

Transistors

17.2 billion

116 mm²

Die Size

335 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.3

2.1

CUDA

-

5.1

Shader Model

6.5

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