NVIDIA GeForce GT 740M vs NVIDIA GeForce GT 645M

VS

NVIDIA GeForce GT 740M NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 740M and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 740M 's Advantages

Released 8 months late

NVIDIA GeForce GT 645M 's Advantages

Larger VRAM bandwidth (28.80GB/s vs 14.40GB/s)

Lower TDP (32W vs 33W)

Score

Benchmark

FP32 (float)

GeForce GT 740M +38%

0.753 TFLOPS

GeForce GT 645M

0.544 TFLOPS

GeForce GT 740M

VS

GeForce GT 645M

Graphics Card

Jun 2013

Release Date

Oct 2012

GeForce 700M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

384

32

TMUs

32

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

Theoretical Performance

7.840 GPixel/s

Pixel Rate

5.672 GPixel/s

31.36 GTexel/s

Texture Rate

22.69 GTexel/s

-

FP16 (half)

-

752.6 GFLOPS

FP32 (float)

544.5 GFLOPS

31.36 GFLOPS

FP64 (double)

22.69 GFLOPS

Graphics Processor

GK208

GPU Name

GK107

GT 740M

GPU Variant

N13P-GS

Kepler 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.02 billion

Transistors

1.27 billion

87 mm²

Die Size

118 mm²

Board Design

33W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.5

CUDA

3.0

5.1

Shader Model

5.1

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