NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce GTX 980 Ti

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce GTX 980 Ti

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 6GB VRAM GeForce GTX 980 Ti 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 250W)

NVIDIA GeForce GTX 980 Ti 's Advantages

Released 2 years and 2 months late

Boost Clock1076MHz

More VRAM (6GB vs 1024GB)

Larger VRAM bandwidth (336.6GB/s vs 64.00GB/s)

2240 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce GTX 980 Ti +538%

6.06 TFLOPS

GeForce GTX 645 OEM

VS

GeForce GTX 980 Ti

Graphics Card

Apr 2013

Release Date

Jun 2015

GeForce 600

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1076 MHz

1000 MHz

Memory Clock

1753 MHz

Memory

1024MB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

64.00GB/s

Bandwidth

336.6GB/s

Render Config

-

576

Shading Units

2816

48

TMUs

176

16

ROPs

96

-

16 KB (per SMX)

L1 Cache

48 KB (per SMM)

256 KB

L2 Cache

3 MB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

103.3 GPixel/s

39.55 GTexel/s

Texture Rate

189.4 GTexel/s

-

949.2 GFLOPS

FP32 (float)

6.060 TFLOPS

39.55 GFLOPS

FP64 (double)

189.4 GFLOPS

Board Design

65W

TDP

250W

250 W

Suggested PSU

600 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 6-pin + 1x 8-pin

Graphics Processor

GK106

GPU Name

GM200

GK106-200-A1

GPU Variant

GM200-310-A1

Kepler

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

8 billion

221 mm²

Die Size

601 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

5.2

5.1

Shader Model

6.4

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