ATI Mobility Radeon HD 3870 vs AMD Radeon RX 6800S

VS

ATI Mobility Radeon HD 3870

AMD Radeon RX 6800S

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 8GB VRAM Radeon RX 6800S to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 100W)

AMD Radeon RX 6800S 's Advantages

Released 13 years and 7 months late

Boost Clock2100MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 54.40GB/s)

1728 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon RX 6800S +1938%

8.602 TFLOPS

Mobility Radeon HD 3870

VS

Radeon RX 6800S

Graphics Card

Jun 2008

Release Date

Jan 2022

M8x

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

-

Base Clock

1800 MHz

-

Boost Clock

2100 MHz

850 MHz

Memory Clock

2000 MHz

Memory

512MB

Memory Size

8GB

GDDR3

Memory Type

GDDR6

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

256.0GB/s

Render Config

4

Compute Units

32

-

320

Shading Units

2048

16

TMUs

128

16

ROPs

64

-

RT Cores

32

-

L1 Cache

128 KB per Array

256 KB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

10.56 GPixel/s

Pixel Rate

134.4 GPixel/s

10.56 GTexel/s

Texture Rate

268.8 GTexel/s

-

FP16 (half)

17.20 TFLOPS

422.4 GFLOPS

FP32 (float)

8.602 TFLOPS

84.48 GFLOPS

FP64 (double)

537.6 GFLOPS

Board Design

55W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

M88

GPU Name

Navi 23

-

TeraScale

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

7 nm

0.666 billion

Transistors

11.06 billion

192 mm²

Die Size

237 mm²

Graphics Features

10.1 (10_1)

DirectX

12 Ultimate (12_2)

3.3

OpenGL

4.6

N/A

OpenCL

2.1

N/A

Vulkan

1.3

-

4.1

Shader Model

6.5

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