NVIDIA GeForce GT 640M LE vs NVIDIA GeForce GT 320M

VS

NVIDIA GeForce GT 640M LE NVIDIA GeForce GT 320M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 640M LE and 1024MB VRAM GeForce GT 320M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640M LE 's Advantages

Released 2 years and 2 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (50.24GB/s vs 25.28GB/s)

72 additional rendering cores

NVIDIA GeForce GT 320M 's Advantages

Lower TDP (23W vs 32W)

Score

Benchmark

FP32 (float)

GeForce GT 640M LE +445%

0.289 TFLOPS

GeForce GT 320M

0.053 TFLOPS

GeForce GT 640M LE

VS

GeForce GT 320M

Graphics Card

May 2012

Release Date

Mar 2010

GeForce 600M

Generation

GeForce 300M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

785 MHz

Memory Clock

790 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

50.24GB/s

Bandwidth

25.28GB/s

Render Config

2

SM Count

3

-

Compute Units

-

96

Shading Units

24

16

TMUs

8

4

ROPs

8

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

-

256 KB

L2 Cache

64 KB

Theoretical Performance

3.012 GPixel/s

Pixel Rate

4.000 GPixel/s

12.05 GTexel/s

Texture Rate

4.000 GTexel/s

-

FP16 (half)

-

289.0 GFLOPS

FP32 (float)

52.80 GFLOPS

24.08 GFLOPS

FP64 (double)

-

Graphics Processor

GF108

GPU Name

GT216

-

GPU Variant

-

Fermi

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.585 billion

Transistors

0.486 billion

116 mm²

Die Size

100 mm²

Board Design

32W

TDP

23W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

1.2

5.1

Shader Model

4.1

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