NVIDIA GeForce RTX 4090 Mobile vs ATI Mobility Radeon HD 3850

VS

NVIDIA GeForce RTX 4090 Mobile

ATI Mobility Radeon HD 3850

We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 4090 Mobile and 512MB VRAM Mobility Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 Mobile 's Advantages

Released 14 years and 7 months late

Boost Clock1695MHz

More VRAM (16GB vs 512GB)

Larger VRAM bandwidth (576.0GB/s vs 48.00GB/s)

9408 additional rendering cores

ATI Mobility Radeon HD 3850 's Advantages

Lower TDP (35W vs 80W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 Mobile +8789%

32.98 TFLOPS

Mobility Radeon HD 3850

0.371 TFLOPS

GeForce RTX 4090 Mobile

VS

Mobility Radeon HD 3850

Graphics Card

Jan 2023

Release Date

Jun 2008

GeForce 40 Mobile

Generation

M8x

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1335 MHz

Base Clock

-

1695 MHz

Boost Clock

-

2250 MHz

Memory Clock

750 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

48.00GB/s

Render Config

-

Compute Units

4

76

SM Count

-

9728

Shading Units

320

304

TMUs

16

112

ROPs

16

304

Tensor Cores

-

76

RT Cores

-

128 KB (per SM)

L1 Cache

-

64 MB

L2 Cache

256 KB

-

Theoretical Performance

189.8 GPixel/s

Pixel Rate

9.280 GPixel/s

515.3 GTexel/s

Texture Rate

9.280 GTexel/s

32.98 TFLOPS

FP16 (half)

-

32.98 TFLOPS

FP32 (float)

371.2 GFLOPS

515.3 GFLOPS

FP64 (double)

74.24 GFLOPS

Board Design

80-150W

TDP

35W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

AD103

GPU Name

M88

GN21-X11

GPU Variant

-

Ada Lovelace

Architecture

TeraScale

TSMC

Foundry

TSMC

5 nm

Process Size

55 nm

45.9 billion

Transistors

0.666 billion

379 mm²

Die Size

192 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.3

Vulkan

N/A

8.9

CUDA

-

6.8

Shader Model

4.1

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