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

VS

NVIDIA GeForce GTX 765M

NVIDIA GeForce GT 640M Mac Edition

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

Main Differences

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

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GTX 765M +131%

1.326 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

GeForce GTX 765M

VS

GeForce GT 640M Mac Edition

Graphics Card

May 2013

Release Date

Feb 2013

GeForce 700M

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

797 MHz

Base Clock

-

863 MHz

Boost Clock

-

1002 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

64.13GB/s

Bandwidth

40.00GB/s

Render Config

-

768

Shading Units

384

64

TMUs

32

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

13.81 GPixel/s

Pixel Rate

5.960 GPixel/s

55.23 GTexel/s

Texture Rate

23.84 GTexel/s

-

1326 GFLOPS

FP32 (float)

572.2 GFLOPS

55.23 GFLOPS

FP64 (double)

23.84 GFLOPS

Board Design

75W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK106

GPU Name

GK107

N14E-GE-B-A1

GPU Variant

N13P-GS

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

1.27 billion

221 mm²

Die Size

118 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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