NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GT 545

VS

NVIDIA GeForce GT 645 OEM

NVIDIA GeForce GT 545

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 1536MB VRAM GeForce GT 545 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Released 11 months late

Larger VRAM bandwidth (91.87GB/s vs 38.40GB/s)

144 additional rendering cores

NVIDIA GeForce GT 545 's Advantages

More VRAM (1536GB vs 1024GB)

Lower TDP (70W vs 102W)

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM +115%

0.894 TFLOPS

GeForce GT 545

0.415 TFLOPS

GeForce GT 645 OEM

VS

GeForce GT 545

Graphics Card

Apr 2012

Release Date

May 2011

GeForce 600

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

192bit

91.87GB/s

Bandwidth

38.40GB/s

Render Config

-

6

SM Count

3

288

Shading Units

144

48

TMUs

24

ROPs

16

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

384 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

4.320 GPixel/s

37.25 GTexel/s

Texture Rate

17.28 GTexel/s

-

894.0 GFLOPS

FP32 (float)

414.7 GFLOPS

74.50 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

102W

TDP

70W

300 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

-

Power Connectors

None

Graphics Processor

GF114

GPU Name

GF116

-

Fermi 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

1.17 billion

332 mm²

Die Size

238 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

2.1

5.1

Shader Model

5.1

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