NVIDIA GeForce GT 650M vs NVIDIA GeForce GT 640M LE

VS

NVIDIA GeForce GT 650M

NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 650M 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 GT 650M 's Advantages

Boost Clock950MHz

288 additional rendering cores

NVIDIA GeForce GT 640M LE 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (50.24GB/s vs 28.80GB/s)

Lower TDP (32W vs 45W)

Score

Benchmark

FP32 (float)

GeForce GT 650M +152%

0.73 TFLOPS

GeForce GT 640M LE

0.289 TFLOPS

GeForce GT 650M

VS

GeForce GT 640M LE

Graphics Card

Mar 2012

Release Date

May 2012

GeForce 600M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

835 MHz

Base Clock

-

950 MHz

Boost Clock

-

900 MHz

Memory Clock

785 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

50.24GB/s

Render Config

-

SM Count

2

384

Shading Units

96

32

TMUs

16

ROPs

4

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.600 GPixel/s

Pixel Rate

3.012 GPixel/s

30.40 GTexel/s

Texture Rate

12.05 GTexel/s

-

729.6 GFLOPS

FP32 (float)

289.0 GFLOPS

30.40 GFLOPS

FP64 (double)

24.08 GFLOPS

Board Design

45W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK107

GPU Name

GF108

N13P-GT-A2

GPU Variant

-

Kepler

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

0.585 billion

118 mm²

Die Size

116 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

2.1

5.1

Shader Model

5.1

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