NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GTX 765M

VS

NVIDIA GeForce GT 640M Mac Edition

NVIDIA GeForce GTX 765M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 2GB VRAM GeForce GTX 765M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 75W)

NVIDIA GeForce GTX 765M 's Advantages

Boost Clock863MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (64.13GB/s vs 40.00GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640M Mac Edition

0.572 TFLOPS

GeForce GTX 765M +131%

1.326 TFLOPS

GeForce GT 640M Mac Edition

VS

GeForce GTX 765M

Graphics Card

Feb 2013

Release Date

May 2013

GeForce 600M

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

797 MHz

-

Boost Clock

863 MHz

1250 MHz

Memory Clock

1002 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

40.00GB/s

Bandwidth

64.13GB/s

Render Config

-

384

Shading Units

768

32

TMUs

64

8

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

5.960 GPixel/s

Pixel Rate

13.81 GPixel/s

23.84 GTexel/s

Texture Rate

55.23 GTexel/s

-

572.2 GFLOPS

FP32 (float)

1326 GFLOPS

23.84 GFLOPS

FP64 (double)

55.23 GFLOPS

Board Design

32W

TDP

75W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK107

GPU Name

GK106

N13P-GS

GPU Variant

N14E-GE-B-A1

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

2.54 billion

118 mm²

Die Size

221 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.0

CUDA

3.0

5.1

Shader Model

5.1

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