NVIDIA GeForce RTX 4080 Mobile vs ATI Mobility Radeon HD 3870 X2

VS

NVIDIA GeForce RTX 4080 Mobile

ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 12GB VRAM GeForce RTX 4080 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 4080 Mobile 's Advantages

Released 14 years and 4 months late

Boost Clock1665MHz

More VRAM (12GB vs 512GB)

Larger VRAM bandwidth (432.0GB/s vs 54.40GB/s)

7104 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce RTX 4080 Mobile +5757%

24.72 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

GeForce RTX 4080 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

1290 MHz

Base Clock

-

1665 MHz

Boost Clock

-

2250 MHz

Memory Clock

850 MHz

Memory

12GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

192bit

Memory Bus

256bit

432.0GB/s

Bandwidth

54.40GB/s

Render Config

-

Compute Units

4

58

SM Count

-

7424

Shading Units

320

232

TMUs

16

80

ROPs

16

232

Tensor Cores

-

58

RT Cores

-

128 KB (per SM)

L1 Cache

-

48 MB

L2 Cache

256 KB

-

Theoretical Performance

133.2 GPixel/s

Pixel Rate

10.56 GPixel/s

386.3 GTexel/s

Texture Rate

10.56 GTexel/s

24.72 TFLOPS

FP16 (half)

-

24.72 TFLOPS

FP32 (float)

422.4 GFLOPS

386.3 GFLOPS

FP64 (double)

84.48 GFLOPS

Board Design

110W

TDP

110W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

AD104

GPU Name

M88

GN21-X9

GPU Variant

-

Ada Lovelace

Architecture

TeraScale

TSMC

Foundry

TSMC

4 nm

Process Size

55 nm

35.8 billion

Transistors

0.666 billion

295 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

-

6.7

Shader Model

4.1

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