AMD Radeon HD 6870M vs AMD Radeon RX 7900M

VS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 16GB VRAM Radeon RX 7900M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

Lower TDP (50W vs 180W)

AMD Radeon RX 7900M 's Advantages

Released 12 years and 9 months late

Boost Clock2090MHz

More VRAM (16GB vs 1GB)

Larger VRAM bandwidth (576.0GB/s vs 64.00GB/s)

3808 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870M

1.08 TFLOPS

Radeon RX 7900M +3466%

38.52 TFLOPS

Radeon HD 6870M

VS

Radeon RX 7900M

Graphics Card

Jan 2011

Release Date

Oct 2023

Vancouver

Generation

Navi Mobile

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2090 MHz

1000 MHz

Memory Clock

2250 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

576.0GB/s

Render Config

-

SM Count

-

10

Compute Units

72

800

Shading Units

4608

40

TMUs

288

16

ROPs

192

-

Tensor Cores

-

RT Cores

72

8 KB (per CU)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

Theoretical Performance

10.80 GPixel/s

Pixel Rate

401.3 GPixel/s

27.00 GTexel/s

Texture Rate

601.9 GTexel/s

-

FP16 (half)

77.05 TFLOPS

1080 GFLOPS

FP32 (float)

38.52 TFLOPS

-

FP64 (double)

1204 GFLOPS

Graphics Processor

Granville

GPU Name

Navi 31

Granville XT (216-0769024)

GPU Variant

Navi 31

TeraScale 2

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

1.04 billion

Transistors

57.7 billion

166 mm²

Die Size

529 mm²

Board Design

50W

TDP

180W

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

CUDA

-

5.0

Shader Model

6.7

Related GPU Comparisons

1

NVIDIA GeForce GT 625M vs AMD Radeon HD 6870M

2

NVIDIA GeForce RTX 2060 Mobile vs AMD Radeon HD 6870M

3

AMD Radeon HD 6970M Rebrand vs AMD Radeon HD 6870M

4

NVIDIA GeForce RTX 4060 Mobile vs AMD Radeon HD 6870M

5

NVIDIA GeForce GTS 150M vs AMD Radeon HD 6870M

6

AMD Radeon HD 6870M vs AMD Radeon HD 8950M

7

AMD Radeon RX 7900 XT vs AMD Radeon RX 7900M

8

AMD Radeon HD 6870M vs AMD Radeon HD 6730M

9

AMD Radeon HD 6870M vs NVIDIA GeForce GT 650M

10

AMD Radeon HD 6870M vs NVIDIA T550 Mobile