NVIDIA GeForce GTX 1080 Ti vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GTX 1080 Ti NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 11GB VRAM GeForce GTX 1080 Ti 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 1080 Ti 's Advantages

Released 4 years and 11 months late

Boost Clock1582MHz

More VRAM (11GB vs 1GB)

Larger VRAM bandwidth (484.4GB/s vs 91.87GB/s)

3296 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 1080 Ti +1168%

11.34 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

GeForce GTX 1080 Ti

VS

GeForce GT 645 OEM

Graphics Card

Mar 2017

Release Date

Apr 2012

GeForce 10

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1481 MHz

Base Clock

-

1582 MHz

Boost Clock

-

1376 MHz

Memory Clock

957 MHz

Memory

11GB

Memory Size

1024MB

GDDR5X

Memory Type

GDDR5

352bit

Memory Bus

192bit

484.4GB/s

Bandwidth

91.87GB/s

Render Config

28

SM Count

6

-

Compute Units

-

3584

Shading Units

288

224

TMUs

48

88

ROPs

24

-

Tensor Cores

-

RT Cores

-

48 KB (per SM)

L1 Cache

64 KB (per SM)

0 MB

L2 Cache

384 KB

Theoretical Performance

139.2 GPixel/s

Pixel Rate

9.312 GPixel/s

354.4 GTexel/s

Texture Rate

37.25 GTexel/s

177.2 GFLOPS

FP16 (half)

-

11.34 TFLOPS

FP32 (float)

894.0 GFLOPS

354.4 GFLOPS

FP64 (double)

74.50 GFLOPS

Graphics Processor

GP102

GPU Name

GF114

GP102-350-K1-A1

GPU Variant

-

Pascal

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

16 nm

Process Size

40 nm

11.8 billion

Transistors

1.95 billion

471 mm²

Die Size

332 mm²

Board Design

250W

TDP

102W

600 W

Suggested PSU

300 W

1x HDMI 2.0 3x DisplayPort 1.4a

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

6.1

CUDA

2.1

6.4

Shader Model

5.1

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