AMD Radeon RX 7900M vs ATI Mobility Radeon HD 3870 X2

VS

AMD Radeon RX 7900M ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M 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

AMD Radeon RX 7900M 's Advantages

Released 15 years and 1 months late

Boost Clock2090MHz

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

4288 additional rendering cores

ATI Mobility Radeon HD 3870 X2 's Advantages

Lower TDP (110W vs 180W)

Score

Benchmark

FP32 (float)

Radeon RX 7900M +9027%

38.52 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

Radeon RX 7900M

VS

Mobility Radeon HD 3870 X2

Graphics Card

Oct 2023

Release Date

Sep 2008

Navi Mobile

Generation

M8x

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2090 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

-

SM Count

-

72

Compute Units

4

4608

Shading Units

320

288

TMUs

16

192

ROPs

16

-

Tensor Cores

-

72

RT Cores

-

256 KB per Array

L1 Cache

-

6 MB

L2 Cache

256 KB

Theoretical Performance

401.3 GPixel/s

Pixel Rate

10.56 GPixel/s

601.9 GTexel/s

Texture Rate

10.56 GTexel/s

77.05 TFLOPS

FP16 (half)

-

38.52 TFLOPS

FP32 (float)

422.4 GFLOPS

1204 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

Navi 31

GPU Name

M88

Navi 31

GPU Variant

-

RDNA 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

5 nm

Process Size

55 nm

57.7 billion

Transistors

0.666 billion

529 mm²

Die Size

192 mm²

Board Design

180W

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

2.2

OpenCL

N/A

1.3

Vulkan

N/A

-

CUDA

-

6.7

Shader Model

4.1

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