NVIDIA GeForce RTX 3080 Mobile vs ATI Mobility Radeon HD 3870

VS

NVIDIA GeForce RTX 3080 Mobile ATI Mobility Radeon HD 3870

We compared two Mobile platform GPUs: 8GB VRAM GeForce RTX 3080 Mobile and 512MB VRAM Mobility Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Mobile 's Advantages

Released 12 years and 7 months late

Boost Clock1545MHz

Larger VRAM bandwidth (448.0GB/s vs 54.40GB/s)

5824 additional rendering cores

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 115W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Mobile +4397%

18.98 TFLOPS

Mobility Radeon HD 3870

0.422 TFLOPS

GeForce RTX 3080 Mobile

VS

Mobility Radeon HD 3870

Graphics Card

Jan 2021

Release Date

Jun 2008

GeForce 30 Mobile

Generation

M8x

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1110 MHz

Base Clock

-

1545 MHz

Boost Clock

-

1750 MHz

Memory Clock

850 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

256bit

448.0GB/s

Bandwidth

54.40GB/s

Render Config

48

SM Count

-

Compute Units

4

6144

Shading Units

320

192

TMUs

16

96

ROPs

16

192

Tensor Cores

-

48

RT Cores

-

128 KB (per SM)

L1 Cache

-

4 MB

L2 Cache

256 KB

Theoretical Performance

148.3 GPixel/s

Pixel Rate

10.56 GPixel/s

296.6 GTexel/s

Texture Rate

10.56 GTexel/s

18.98 TFLOPS

FP16 (half)

-

18.98 TFLOPS

FP32 (float)

422.4 GFLOPS

296.6 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

GA104

GPU Name

M88

GA104-775-A1

GPU Variant

-

Ampere

Architecture

TeraScale

Samsung

Foundry

TSMC

8 nm

Process Size

55 nm

17.4 billion

Transistors

0.666 billion

392 mm²

Die Size

192 mm²

Board Design

115W

TDP

55W

-

Suggested PSU

-

No outputs

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

8.6

CUDA

-

6.6

Shader Model

4.1

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