NVIDIA GeForce GT 440 Mac Edition vs NVIDIA GeForce GTX 645 OEM

VS

NVIDIA GeForce GT 440 Mac Edition NVIDIA GeForce GTX 645 OEM

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

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 2 years and 2 months late

Larger VRAM bandwidth (64.00GB/s vs 21.34GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 440 Mac Edition

0.311 TFLOPS

GeForce GTX 645 OEM +205%

0.949 TFLOPS

GeForce GT 440 Mac Edition

VS

GeForce GTX 645 OEM

Graphics Card

Feb 2011

Release Date

Apr 2013

GeForce 400

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

667 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

21.34GB/s

Bandwidth

64.00GB/s

Render Config

2

SM Count

-

Compute Units

-

96

Shading Units

576

16

TMUs

48

4

ROPs

16

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

Theoretical Performance

3.240 GPixel/s

Pixel Rate

9.888 GPixel/s

12.96 GTexel/s

Texture Rate

39.55 GTexel/s

-

FP16 (half)

-

311.0 GFLOPS

FP32 (float)

949.2 GFLOPS

25.92 GFLOPS

FP64 (double)

39.55 GFLOPS

Graphics Processor

GF108

GPU Name

GK106

GF108-400-A1

GPU Variant

GK106-200-A1

Fermi

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

2.54 billion

116 mm²

Die Size

221 mm²

Board Design

65W

TDP

65W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

None

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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