NVIDIA GeForce RTX 4090 Mobile vs ATI Mobility Radeon HD 3870 X2

VS

NVIDIA GeForce RTX 4090 Mobile ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 4090 Mobile and 512MB VRAM Mobility Radeon HD 3870 X2 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 4 months late

Boost Clock1695MHz

Larger VRAM bandwidth (576.0GB/s vs 54.40GB/s)

9408 additional rendering cores

ATI Mobility Radeon HD 3870 X2 's Advantages

Lower TDP (110W vs 120W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 Mobile +7715%

32.98 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

GeForce RTX 4090 Mobile

VS

Mobility Radeon HD 3870 X2

Graphics Card

Jan 2023

Release Date

Sep 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

850 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

54.40GB/s

Render Config

76

SM Count

-

Compute Units

4

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

10.56 GPixel/s

515.3 GTexel/s

Texture Rate

10.56 GTexel/s

32.98 TFLOPS

FP16 (half)

-

32.98 TFLOPS

FP32 (float)

422.4 GFLOPS

515.3 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

AD103

GPU Name

M88

GN21-X11

GPU Variant

-

Ada Lovelace

Architecture

TeraScale

TSMC

Foundry

TSMC

4 nm

Process Size

55 nm

45.9 billion

Transistors

0.666 billion

379 mm²

Die Size

192 mm²

Board Design

120W

TDP

110W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

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

-

6.7

Shader Model

4.1

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