NVIDIA GeForce GTX 775M Mac Edition vs NVIDIA GeForce GT 640M Mac Edition

VS

NVIDIA GeForce GTX 775M Mac Edition

NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 775M Mac Edition 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 775M Mac Edition 's Advantages

Released 9 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 40.00GB/s)

960 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 100W)

Score

Benchmark

FP32 (float)

GeForce GTX 775M Mac Edition +274%

2.142 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

GeForce GTX 775M Mac Edition

VS

GeForce GT 640M Mac Edition

Graphics Card

Nov 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

-

1250 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

40.00GB/s

Render Config

-

1344

Shading Units

384

112

TMUs

32

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

22.32 GPixel/s

Pixel Rate

5.960 GPixel/s

89.26 GTexel/s

Texture Rate

23.84 GTexel/s

-

2.142 TFLOPS

FP32 (float)

572.2 GFLOPS

89.26 GFLOPS

FP64 (double)

23.84 GFLOPS

Board Design

100W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK104

GPU Name

GK107

N13E-GTX-A2

GPU Variant

N13P-GS

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

1.27 billion

294 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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