NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 440

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GT 440

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM GeForce GT 440 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 1 years and 4 months late

More VRAM (2GB vs 1024GB)

288 additional rendering cores

NVIDIA GeForce GT 440 's Advantages

Larger VRAM bandwidth (28.80GB/s vs 28.51GB/s)

Score

Benchmark

FP32 (float)

GeForce GT 640 +122%

0.693 TFLOPS

GeForce GT 440

0.311 TFLOPS

GeForce GT 640

VS

GeForce GT 440

Graphics Card

Jun 2012

Release Date

Feb 2011

GeForce 600

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

28.80GB/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

7.216 GPixel/s

Pixel Rate

3.240 GPixel/s

28.86 GTexel/s

Texture Rate

12.96 GTexel/s

-

692.7 GFLOPS

FP32 (float)

311.0 GFLOPS

28.86 GFLOPS

FP64 (double)

25.92 GFLOPS

Board Design

65W

TDP

65W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

GF108

GK107-300-A2

GPU Variant

GF108-400-A1

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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