NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce GTX 1080 11Gbps

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce GTX 1080 11Gbps

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 8GB VRAM GeForce GTX 1080 11Gbps to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 180W)

NVIDIA GeForce GTX 1080 11Gbps 's Advantages

Released 4 years late

Boost Clock1733MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (352.3GB/s vs 64.00GB/s)

1984 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce GTX 1080 11Gbps +834%

8.873 TFLOPS

GeForce GTX 645 OEM

VS

GeForce GTX 1080 11Gbps

Graphics Card

Apr 2013

Release Date

Apr 2017

GeForce 600

Generation

GeForce 10

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1607 MHz

-

Boost Clock

1733 MHz

1000 MHz

Memory Clock

1376 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5X

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

352.3GB/s

Render Config

-

SM Count

20

576

Shading Units

2560

48

TMUs

160

16

ROPs

64

-

16 KB (per SMX)

L1 Cache

48 KB (per SM)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

110.9 GPixel/s

39.55 GTexel/s

Texture Rate

277.3 GTexel/s

-

FP16 (half)

138.6 GFLOPS

949.2 GFLOPS

FP32 (float)

8.873 TFLOPS

39.55 GFLOPS

FP64 (double)

277.3 GFLOPS

Board Design

65W

TDP

180W

250 W

Suggested PSU

450 W

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

Outputs

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

None

Power Connectors

1x 8-pin

Graphics Processor

GK106

GPU Name

GP104

GK106-200-A1

GPU Variant

GP104-410-A1

Kepler

Architecture

Pascal

TSMC

Foundry

TSMC

28 nm

Process Size

16 nm

2.54 billion

Transistors

7.2 billion

221 mm²

Die Size

314 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

6.1

5.1

Shader Model

6.4

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