NVIDIA GeForce 805A vs NVIDIA GeForce GT 640M LE

VS

NVIDIA GeForce 805A

NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 805A 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 805A 's Advantages

Released 2 years and 2 months late

Boost Clock758MHz

96 additional rendering cores

Lower TDP (15W vs 32W)

NVIDIA GeForce GT 640M LE 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (50.24GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 805A

0.291 TFLOPS

GeForce GT 640M LE

0.289 TFLOPS

GeForce 805A

VS

GeForce GT 640M LE

Graphics Card

Jul 2014

Release Date

May 2012

GeForce 800A

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

719 MHz

Base Clock

-

758 MHz

Boost Clock

-

1001 MHz

Memory Clock

785 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

50.24GB/s

Render Config

-

SM Count

2

192

Shading Units

96

16

TMUs

16

8

ROPs

4

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

6.064 GPixel/s

Pixel Rate

3.012 GPixel/s

12.13 GTexel/s

Texture Rate

12.05 GTexel/s

-

291.1 GFLOPS

FP32 (float)

289.0 GFLOPS

12.13 GFLOPS

FP64 (double)

24.08 GFLOPS

Board Design

15W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK208

GPU Name

GF108

-

Kepler 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.02 billion

Transistors

0.585 billion

87 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

3.5

CUDA

2.1

5.1

Shader Model

5.1

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