NVIDIA GeForce GT 420M vs AMD Radeon RX 7800M

VS

NVIDIA GeForce GT 420M

AMD Radeon RX 7800M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 12GB VRAM Radeon RX 7800M 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 180W)

AMD Radeon RX 7800M 's Advantages

Released 14 years late

Boost Clock2145MHz

More VRAM (12GB vs 512GB)

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

3744 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

Radeon RX 7800M +18582%

35.87 TFLOPS

GeForce GT 420M

VS

Radeon RX 7800M

Graphics Card

Sep 2010

Release Date

Sep 2024

GeForce 400M

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

DDR3

Memory Type

GDDR6

128bit

Memory Bus

192bit

25.60GB/s

Bandwidth

432GB/s

Render Config

-

Compute Units

60

2

SM Count

-

96

Shading Units

3840

16

TMUs

240

4

ROPs

96

-

RT Cores

60

64 KB (per SM)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

-

L3 Cache

48 MB

Theoretical Performance

2.000 GPixel/s

Pixel Rate

401.3 GPixel/s

8.000 GTexel/s

Texture Rate

560.4 GTexel/s

-

FP16 (half)

71.73 TFLOPS

192.0 GFLOPS

FP32 (float)

35.87 TFLOPS

16.00 GFLOPS

FP64 (double)

1121 GFLOPS

Board Design

23W

TDP

180W

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

GF108

GPU Name

Navi 32

N11P-GE-A1

GPU Variant

Navi 32

Fermi

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

0.585 billion

Transistors

28.1 billion

116 mm²

Die Size

529 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

2.2

N/A

Vulkan

1.3

2.1

CUDA

-

5.1

Shader Model

6.7

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