AMD Radeon RX 6800S vs ATI Mobility Radeon HD 3870 X2

VS

AMD Radeon RX 6800S ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6800S 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 6800S 's Advantages

Released 13 years and 4 months late

Boost Clock2100MHz

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

1728 additional rendering cores

Lower TDP (100W vs 110W)

Score

Benchmark

FP32 (float)

Radeon RX 6800S +1938%

8.602 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

Radeon RX 6800S

VS

Mobility Radeon HD 3870 X2

Graphics Card

Jan 2022

Release Date

Sep 2008

Mobility Radeon

Generation

M8x

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1800 MHz

Base Clock

-

2100 MHz

Boost Clock

-

2000 MHz

Memory Clock

850 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

128bit

Memory Bus

256bit

256.0GB/s

Bandwidth

54.40GB/s

Render Config

-

SM Count

-

32

Compute Units

4

2048

Shading Units

320

128

TMUs

16

64

ROPs

16

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

-

2 MB

L2 Cache

256 KB

Theoretical Performance

134.4 GPixel/s

Pixel Rate

10.56 GPixel/s

268.8 GTexel/s

Texture Rate

10.56 GTexel/s

17.20 TFLOPS

FP16 (half)

-

8.602 TFLOPS

FP32 (float)

422.4 GFLOPS

537.6 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

Navi 23

GPU Name

M88

-

GPU Variant

-

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

11.06 billion

Transistors

0.666 billion

237 mm²

Die Size

192 mm²

Board Design

100W

TDP

110W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.3

Vulkan

N/A

-

CUDA

-

6.5

Shader Model

4.1

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