AMD Radeon RX 7900M vs AMD Radeon E8870

VS

We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M and 4GB VRAM Radeon E8870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900M 's Advantages

Released 8 years and 1 months late

Boost Clock2090MHz

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (576.0GB/s vs 96.00GB/s)

3840 additional rendering cores

AMD Radeon E8870 's Advantages

Lower TDP (75W vs 180W)

Score

Benchmark

FP32 (float)

Radeon RX 7900M +2407%

38.52 TFLOPS

Radeon E8870

1.536 TFLOPS

Radeon RX 7900M

VS

Radeon E8870

Graphics Card

Oct 2023

Release Date

Sep 2015

Navi Mobile

Generation

Embedded

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

1825 MHz

Base Clock

-

2090 MHz

Boost Clock

-

2250 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

576.0GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

72

Compute Units

12

4608

Shading Units

768

288

TMUs

48

192

ROPs

16

-

Tensor Cores

-

72

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

Theoretical Performance

401.3 GPixel/s

Pixel Rate

16.00 GPixel/s

601.9 GTexel/s

Texture Rate

48.00 GTexel/s

77.05 TFLOPS

FP16 (half)

-

38.52 TFLOPS

FP32 (float)

1.536 TFLOPS

1204 GFLOPS

FP64 (double)

96.00 GFLOPS

Graphics Processor

Navi 31

GPU Name

Saturn

Navi 31

GPU Variant

Saturn PRO

RDNA 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

2.08 billion

529 mm²

Die Size

160 mm²

Board Design

180W

TDP

75W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.0

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

6.3

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