NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX TITAN Z

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX TITAN Z

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 6GB VRAM GeForce GTX TITAN Z to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 375W)

NVIDIA GeForce GTX TITAN Z 's Advantages

Released 2 years and 1 months late

Boost Clock876MHz

More VRAM (6GB vs 1536GB)

Larger VRAM bandwidth (336.0GB/s vs 38.40GB/s)

2736 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX TITAN Z +1115%

5.046 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX TITAN Z

Graphics Card

Apr 2012

Release Date

May 2014

GeForce 600

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

705 MHz

-

Boost Clock

876 MHz

800 MHz

Memory Clock

1750 MHz

Memory

1536MB

Memory Size

6GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

384bit

38.40GB/s

Bandwidth

336.0GB/s

Render Config

-

3

SM Count

-

144

Shading Units

2880

24

TMUs

240

24

ROPs

48

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

384 KB

L2 Cache

1536 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

52.56 GPixel/s

17.28 GTexel/s

Texture Rate

210.2 GTexel/s

-

414.7 GFLOPS

FP32 (float)

5.046 TFLOPS

34.56 GFLOPS

FP64 (double)

1.682 TFLOPS

Board Design

75W

TDP

375W

250 W

Suggested PSU

750 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

2x 8-pin

Graphics Processor

GF116

GPU Name

GK110B

GF116-150-A1

GPU Variant

GK110-350-B1

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

7.08 billion

238 mm²

Die Size

561 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.5

5.1

Shader Model

5.1

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