NVIDIA GeForce GTX 670M vs NVIDIA GeForce GT 640M LE

VS

NVIDIA GeForce GTX 670M

NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 1536MB VRAM GeForce GTX 670M 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 GTX 670M 's Advantages

Larger VRAM bandwidth (72.00GB/s vs 50.24GB/s)

240 additional rendering cores

NVIDIA GeForce GT 640M LE 's Advantages

More VRAM (2GB vs 1536GB)

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GTX 670M +178%

0.804 TFLOPS

GeForce GT 640M LE

0.289 TFLOPS

GeForce GTX 670M

VS

GeForce GT 640M LE

Graphics Card

Mar 2012

Release Date

May 2012

GeForce 600M

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

750 MHz

Memory Clock

785 MHz

Memory

1536MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

128bit

72.00GB/s

Bandwidth

50.24GB/s

Render Config

-

7

SM Count

2

336

Shading Units

96

56

TMUs

16

24

ROPs

4

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

8.372 GPixel/s

Pixel Rate

3.012 GPixel/s

33.49 GTexel/s

Texture Rate

12.05 GTexel/s

-

803.7 GFLOPS

FP32 (float)

289.0 GFLOPS

66.98 GFLOPS

FP64 (double)

24.08 GFLOPS

Board Design

75W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF114

GPU Name

GF108

N13E-GS1-LP-A1

GPU Variant

-

Fermi 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

0.585 billion

332 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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