NVIDIA GeForce GTX TITAN BLACK vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GTX TITAN BLACK

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 6GB VRAM GeForce GTX TITAN BLACK 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 GTX TITAN BLACK 's Advantages

Released 1 years and 10 months late

Boost Clock980MHz

More VRAM (6GB vs 1024GB)

Larger VRAM bandwidth (336.0GB/s vs 91.87GB/s)

2592 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX TITAN BLACK +531%

5.645 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

GeForce GTX TITAN BLACK

VS

GeForce GT 645 OEM

Graphics Card

Feb 2014

Release Date

Apr 2012

GeForce 700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

889 MHz

Base Clock

-

980 MHz

Boost Clock

-

1750 MHz

Memory Clock

957 MHz

Memory

6GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

336.0GB/s

Bandwidth

91.87GB/s

Render Config

-

SM Count

6

2880

Shading Units

288

240

TMUs

48

ROPs

24

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

1536 KB

L2 Cache

384 KB

-

Theoretical Performance

58.80 GPixel/s

Pixel Rate

9.312 GPixel/s

235.2 GTexel/s

Texture Rate

37.25 GTexel/s

-

5.645 TFLOPS

FP32 (float)

894.0 GFLOPS

1.882 TFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

250W

TDP

102W

600 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Processor

GK110B

GPU Name

GF114

GK110-430-B1

GPU Variant

-

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

7.08 billion

Transistors

1.95 billion

561 mm²

Die Size

332 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.5

CUDA

2.1

5.1

Shader Model

5.1

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