AMD Radeon RX 6850M XT vs NVIDIA GeForce GT 420M

VS

AMD Radeon RX 6850M XT

NVIDIA GeForce GT 420M

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 6850M 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 6850M XT 's Advantages

Released 11 years and 4 months late

Boost Clock2581MHz

More VRAM (12GB vs 512GB)

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

2464 additional rendering cores

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 165W)

Score

Benchmark

FP32 (float)

Radeon RX 6850M XT +6780%

13.21 TFLOPS

GeForce GT 420M

0.192 TFLOPS

Radeon RX 6850M XT

VS

GeForce GT 420M

Graphics Card

Jan 2022

Release Date

Sep 2010

Mobility Radeon

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2321 MHz

Base Clock

-

2581 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

12GB

Memory Size

512MB

GDDR6

Memory Type

DDR3

192bit

Memory Bus

128bit

384.0GB/s

Bandwidth

25.60GB/s

Render Config

40

Compute Units

-

SM Count

2

2560

Shading Units

96

160

TMUs

16

64

ROPs

4

-

40

RT Cores

-

128 KB per Array

L1 Cache

64 KB (per SM)

3 MB

L2 Cache

256 KB

96 MB

L3 Cache

-

Theoretical Performance

165.2 GPixel/s

Pixel Rate

2.000 GPixel/s

413.0 GTexel/s

Texture Rate

8.000 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

192.0 GFLOPS

825.9 GFLOPS

FP64 (double)

16.00 GFLOPS

Board Design

165W

TDP

23W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 22

GPU Name

GF108

Navi 22 XTM

GPU Variant

N11P-GE-A1

RDNA 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

17.2 billion

Transistors

0.585 billion

335 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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