NVIDIA GeForce 705M vs NVIDIA GeForce GT 640M LE

VS

NVIDIA GeForce 705M

NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 705M and 2GB VRAM GeForce GT 640M LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 705M 's Advantages

Lower TDP (15W vs 32W)

NVIDIA GeForce GT 640M LE 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (50.24GB/s vs 14.40GB/s)

48 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 705M

0.142 TFLOPS

GeForce GT 640M LE +103%

0.289 TFLOPS

GeForce 705M

VS

GeForce GT 640M LE

Graphics Card

Unknown

Release Date

May 2012

GeForce 700M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

785 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

50.24GB/s

Render Config

-

1

SM Count

2

48

Shading Units

96

8

TMUs

16

4

ROPs

4

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

1.476 GPixel/s

Pixel Rate

3.012 GPixel/s

5.904 GTexel/s

Texture Rate

12.05 GTexel/s

-

141.7 GFLOPS

FP32 (float)

289.0 GFLOPS

11.81 GFLOPS

FP64 (double)

24.08 GFLOPS

Board Design

15W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF119

GPU Name

GF108

GF119 B1

GPU Variant

-

Fermi 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.292 billion

Transistors

0.585 billion

79 mm²

Die Size

116 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

2.1

5.1

Shader Model

5.1

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