Radeon HD 6870M and L20 - video card comparison

Radeon HD 6870M

L20

Architecture

Terascale 2 (2009−2015)

Ada Lovelace

GPU code name

Granville-PRO

AD102

Market segment

Laptop

Desktop

Release date

January 2011

November 2023

Interface

MXM-B (3.0)

PCIe 4.0 x16

Supplementary power connectors

-

1x 16-pin

Boost clock speed

-

2520 MHz

Core clock speed

675 MHz

-

Floating-point performance

1,080.0 gflops

-

Manufacturing process technology

40 nm

5 nm

Number of transistors

1,040 million

76,300 million

Pipelines / CUDA cores

800

11776

Power consumption (TDP)

50 Watt

275 Watt

Texture fill rate

27.00

927.4

Memory type

DDR3, GDDR3, GDDR5

GDDR6

Maximum RAM amount

1 GB

48 GB

Memory bus width

128 Bit

384 Bit

Memory clock speed

1000 MHz

18 GB/s

Memory bandwidth

64 GB/s

864.0 GB/s

Shared memory

-

-

Display Connectors

No outputs

4x DisplayPort 1.4a

DirectX

11.2 (11_0)

12 Ultimate (12_2)

CUDA

-

8.9

OpenCL

1.2

3.0

OpenGL

4.4

4.6

Shader Model

5.0

6.7

Vulkan

N/A

1.3