AMD Radeon RX 6450M vs ATI Mobility Radeon HD 3870

VS

AMD Radeon RX 6450M ATI Mobility Radeon HD 3870

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6450M and 512MB VRAM Mobility Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6450M 's Advantages

Released 14 years and 7 months late

Boost Clock2460MHz

Larger VRAM bandwidth (128.0GB/s vs 54.40GB/s)

448 additional rendering cores

Lower TDP (50W vs 55W)

Score

Benchmark

FP32 (float)

Radeon RX 6450M +795%

3.779 TFLOPS

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon RX 6450M

VS

Mobility Radeon HD 3870

Graphics Card

Jan 2023

Release Date

Jun 2008

Navi Mobile

Generation

M8x

Mobile

Type

Mobile

PCIe 4.0 x4

Bus Interface

PCIe 2.0 x16

Clock Speeds

2000 MHz

Base Clock

-

2460 MHz

Boost Clock

-

2000 MHz

Memory Clock

850 MHz

Memory

4GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

64bit

Memory Bus

256bit

128.0GB/s

Bandwidth

54.40GB/s

Render Config

-

SM Count

-

12

Compute Units

4

768

Shading Units

320

48

TMUs

16

32

ROPs

16

-

Tensor Cores

-

12

RT Cores

-

128 KB per Array

L1 Cache

-

1024 KB

L2 Cache

256 KB

Theoretical Performance

78.72 GPixel/s

Pixel Rate

10.56 GPixel/s

118.1 GTexel/s

Texture Rate

10.56 GTexel/s

7.557 TFLOPS

FP16 (half)

-

3.779 TFLOPS

FP32 (float)

422.4 GFLOPS

236.2 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

Navi 24

GPU Name

M88

Navi 24 XML

GPU Variant

-

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

6 nm

Process Size

55 nm

5.4 billion

Transistors

0.666 billion

107 mm²

Die Size

192 mm²

Board Design

50W

TDP

55W

-

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

2.2

OpenCL

N/A

1.3

Vulkan

N/A

-

CUDA

-

6.7

Shader Model

4.1

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