NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 780 Ti Engineering Sample

VS

NVIDIA GeForce GT 645 OEM

NVIDIA GeForce GTX 780 Ti Engineering Sample

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 3GB VRAM GeForce GTX 780 Ti Engineering Sample to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 250W)

NVIDIA GeForce GTX 780 Ti Engineering Sample 's Advantages

Boost Clock928MHz

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (336.6GB/s vs 91.87GB/s)

2592 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

GeForce GTX 780 Ti Engineering Sample +497%

5.345 TFLOPS

GeForce GT 645 OEM

VS

GeForce GTX 780 Ti Engineering Sample

Graphics Card

Apr 2012

Release Date

Unknown

GeForce 600

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

875 MHz

-

Boost Clock

928 MHz

957 MHz

Memory Clock

1753 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

91.87GB/s

Bandwidth

336.6GB/s

Render Config

-

6

SM Count

-

288

Shading Units

2880

48

TMUs

240

24

ROPs

48

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

384 KB

L2 Cache

1536 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

55.68 GPixel/s

37.25 GTexel/s

Texture Rate

222.7 GTexel/s

-

894.0 GFLOPS

FP32 (float)

5.345 TFLOPS

74.50 GFLOPS

FP64 (double)

222.7 GFLOPS

Board Design

102W

TDP

250W

300 W

Suggested PSU

600 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

-

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GF114

GPU Name

GK180

-

GPU Variant

GK180-425-A1

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.95 billion

Transistors

7.08 billion

332 mm²

Die Size

561 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.2.175

2.1

CUDA

3.5

5.1

Shader Model

5.1

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