NVIDIA GeForce GT 440 OEM vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GT 440 OEM

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 440 OEM and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 440 OEM 's Advantages

More VRAM (1536GB vs 1024GB)

Lower TDP (65W vs 102W)

NVIDIA GeForce GT 645 OEM 's Advantages

Released 1 years and 6 months late

Larger VRAM bandwidth (91.87GB/s vs 43.20GB/s)

144 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 440 OEM

0.467 TFLOPS

GeForce GT 645 OEM +91%

0.894 TFLOPS

GeForce GT 440 OEM

VS

GeForce GT 645 OEM

Graphics Card

Oct 2010

Release Date

Apr 2012

GeForce 400

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

957 MHz

Memory

1536MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

192bit

43.20GB/s

Bandwidth

91.87GB/s

Render Config

-

3

SM Count

6

144

Shading Units

288

24

TMUs

48

24

ROPs

24

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

384 KB

-

Theoretical Performance

4.860 GPixel/s

Pixel Rate

9.312 GPixel/s

19.44 GTexel/s

Texture Rate

37.25 GTexel/s

-

466.6 GFLOPS

FP32 (float)

894.0 GFLOPS

38.88 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

65W

TDP

102W

250 W

Suggested PSU

300 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

-

Graphics Processor

GF106

GPU Name

GF114

-

Fermi

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

1.95 billion

238 mm²

Die Size

332 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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