GeForce GTX 750 Ti and GeForce GT 645M - video card comparison

Passmark - benchmark score GeForce GTX 750 Ti vs GeForce GT 645M

GeForce GTX 750 Ti

4020

GeForce GT 645M

957

GeForce GTX 750 Ti

GeForce GT 645M

Architecture

Maxwell (2014−2018)

Kepler (2012−2018)

GPU code name

GM107

N13P-GS

Market segment

Desktop

Laptop

Release date

February 2014

March 2012

Bus support

PCI Express 3.0

PCI Express 2.0, PCI Express 3.0

Interface

PCIe 3.0 x16

Supplementary power connectors

None

Boost clock speed

1085 MHz

Core clock speed

1020 MHz

Up to 710 MHz

CUDA cores

640

384

Floating-point performance

1,389 gflops

544.5 gflops

Manufacturing process technology

28 nm

Number of transistors

1,870 million

1,270 million

Pipelines / CUDA cores

640

384

Power consumption (TDP)

60 Watt

32 Watt

Texture fill rate

43.40

22.7 billion/sec

Memory type

GDDR5

DDR3\GDDR5

Maximum RAM amount

4 GB

2 GB

Memory bus width

128 Bit

128bit

Memory clock speed

5.4 GB/s

1800 MHz

Memory bandwidth

86.4 GB/s

Up to 64.0 GB/s

Shared memory

Display Connectors

One Dual Link DVI-I, One Dual Link DVI-D, One mini-HDMI

No outputs

Multi monitor support

4 displays

HDMI

HDCP

Maximum VGA resolution

2048x1536

Up to 2048x1536

Audio input for HDMI

Internal

DirectX

12 (11_0)

12 API

CUDA

OpenCL

1.2

1.1

OpenGL

4.6

4.5

Shader Model

5.1

Vulkan

1.1.126

3D Blu-Ray

3D Gaming

3D Vision

3D Vision Live

Blu Ray 3D

Optimus