NVIDIA GeForce GTX TITAN X vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce GTX TITAN X

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 12GB VRAM GeForce GTX TITAN X and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX TITAN X 's Advantages

Released 2 years and 9 months late

Boost Clock1089MHz

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (336.6GB/s vs 28.51GB/s)

2688 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX TITAN X +865%

6.691 TFLOPS

GeForce GT 640

0.693 TFLOPS

Blender

GeForce GTX TITAN X +1596%

543

GeForce GT 640

32

OctaneBench

GeForce GTX TITAN X +1000%

88

GeForce GT 640

8

GeForce GTX TITAN X

VS

GeForce GT 640

Graphics Card

Mar 2015

Release Date

Jun 2012

GeForce 900

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1089 MHz

Boost Clock

-

1753 MHz

Memory Clock

891 MHz

Memory

12GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

128bit

336.6GB/s

Bandwidth

28.51GB/s

Render Config

-

3072

Shading Units

384

192

TMUs

32

96

ROPs

16

-

48 KB (per SMM)

L1 Cache

16 KB (per SMX)

3 MB

L2 Cache

256 KB

-

Theoretical Performance

104.5 GPixel/s

Pixel Rate

7.216 GPixel/s

209.1 GTexel/s

Texture Rate

28.86 GTexel/s

-

6.691 TFLOPS

FP32 (float)

692.7 GFLOPS

209.1 GFLOPS

FP64 (double)

28.86 GFLOPS

Board Design

250W

TDP

65W

600 W

Suggested PSU

250 W

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

GM200

GPU Name

GK107

GM200-400-A1

GPU Variant

GK107-300-A2

Maxwell 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

8 billion

Transistors

1.27 billion

601 mm²

Die Size

118 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

5.2

CUDA

3.0

6.4

Shader Model

5.1

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