GeForce 945M and Radeon HD 7770M - video card comparison

GeForce 945M

Radeon HD 7770M

Architecture

Maxwell (2014−2018)

GCN (2011−2017)

GPU code name

GM107

Chelsea XT

Market segment

Laptop

Laptop

Release date

March 2015

April 2012

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

675 MHz

Floating-point performance

953.9 gflops

691.2 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

1,870 million

1,500 million

Pipelines / CUDA cores

512

512

Power consumption (TDP)

75 Watt

32 Watt

Texture fill rate

40.80

21.60

Memory type

DDR3

GDDR5

Maximum RAM amount

4 GB

1 GB

Memory bus width

128 Bit

128 Bit

Memory clock speed

2000 MHz

4000 MHz

Memory bandwidth

28.8 GB/s

64 GB/s

Shared memory

-

-

Display Connectors

No outputs

No outputs

DirectX

12 (11_0)

12 (11_1)

CUDA

+

-

OpenCL

1.2

1.2

OpenGL

4.5

4.6

Shader Model

5.1

5.1

Vulkan

1.1.126

1.2.131

GameWorks

+

-

GPU Boost

2.0

-

Optimus

+

-