NVIDIA GeForce 705M vs NVIDIA GeForce GT 640M Mac Edition

VS

NVIDIA GeForce 705M NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 705M 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 705M 's Advantages

More VRAM (1024GB vs 512GB)

Lower TDP (15W vs 32W)

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Larger VRAM bandwidth (40.00GB/s vs 14.40GB/s)

336 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 705M

0.142 TFLOPS

GeForce GT 640M Mac Edition +302%

0.572 TFLOPS

GeForce 705M

VS

GeForce GT 640M Mac Edition

Graphics Card

Unknown

Release Date

Feb 2013

GeForce 700M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

64bit

14.40GB/s

Bandwidth

40.00GB/s

Render Config

1

SM Count

-

Compute Units

-

48

Shading Units

384

8

TMUs

32

4

ROPs

8

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

128 KB

Theoretical Performance

1.476 GPixel/s

Pixel Rate

5.960 GPixel/s

5.904 GTexel/s

Texture Rate

23.84 GTexel/s

-

FP16 (half)

-

141.7 GFLOPS

FP32 (float)

572.2 GFLOPS

11.81 GFLOPS

FP64 (double)

23.84 GFLOPS

Graphics Processor

GF119

GPU Name

GK107

GF119 B1

GPU Variant

N13P-GS

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.292 billion

Transistors

1.27 billion

79 mm²

Die Size

118 mm²

Board Design

15W

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

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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