NVIDIA GeForce GT 640M LE vs NVIDIA GeForce GT 755M Mac Edition

VS

NVIDIA GeForce GT 640M LE NVIDIA GeForce GT 755M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 640M LE and 1024MB VRAM GeForce GT 755M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640M LE 's Advantages

More VRAM (2GB vs 1GB)

Lower TDP (32W vs 50W)

NVIDIA GeForce GT 755M Mac Edition 's Advantages

Released 1 years and 6 months late

Larger VRAM bandwidth (80.00GB/s vs 50.24GB/s)

288 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640M LE

0.289 TFLOPS

GeForce GT 755M Mac Edition +188%

0.833 TFLOPS

GeForce GT 640M LE

VS

GeForce GT 755M Mac Edition

Graphics Card

May 2012

Release Date

Nov 2013

GeForce 600M

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

785 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

50.24GB/s

Bandwidth

80.00GB/s

Render Config

2

SM Count

-

Compute Units

-

96

Shading Units

384

16

TMUs

32

4

ROPs

16

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

Theoretical Performance

3.012 GPixel/s

Pixel Rate

8.680 GPixel/s

12.05 GTexel/s

Texture Rate

34.72 GTexel/s

-

FP16 (half)

-

289.0 GFLOPS

FP32 (float)

833.3 GFLOPS

24.08 GFLOPS

FP64 (double)

34.72 GFLOPS

Graphics Processor

GF108

GPU Name

GK107

-

GPU Variant

GT 755M

Fermi

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

1.27 billion

116 mm²

Die Size

118 mm²

Board Design

32W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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