GeForce 945M and Mobility Radeon HD 4870 X2 - video card comparison

GeForce 945M

Mobility Radeon HD 4870 X2

Architecture

Maxwell (2014−2018)

Terascale 1 (2008−2010)

GPU code name

GM107

M98-XT

Market segment

Laptop

Release date

March 2015

January 2009

Bus support

PCI Express 3.0

Interface

MXM-B (3.0)

PCIe 2.0 x16

Supplementary power connectors

None

Boost clock speed

1045 MHz

Core clock speed

928 MHz

550 MHz

Floating-point performance

953.9 gflops

2x 880.0 gflops

Manufacturing process technology

28 nm

55 nm

Number of transistors

1,870 million

956 million

Pipelines / CUDA cores

512

1600

Power consumption (TDP)

75 Watt

Texture fill rate

40.80

22.00

Memory type

DDR3

GDDR3, GDDR5

Maximum RAM amount

4 GB

2 GB

Memory bus width

128 Bit

256 Bit

Memory clock speed

2000 MHz

888 MHz

Memory bandwidth

28.8 GB/s

89.6 GB/s

Shared memory

Display Connectors

No outputs

DirectX

12 (11_0)

10.1 (10_1)

CUDA

OpenCL

1.2

1.1

OpenGL

4.5

3.3

Shader Model

5.1

4.1

Vulkan

1.1.126

N/A

GameWorks

GPU Boost

2.0

Optimus