NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 580 Rev. 2

VS

NVIDIA GeForce GT 645 OEM

NVIDIA GeForce GTX 580 Rev. 2

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 1536MB VRAM GeForce GTX 580 Rev. 2 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 10 months late

Lower TDP (102W vs 244W)

NVIDIA GeForce GTX 580 Rev. 2 's Advantages

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (192.4GB/s vs 91.87GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

GeForce GTX 580 Rev. 2 +76%

1.581 TFLOPS

GeForce GT 645 OEM

VS

GeForce GTX 580 Rev. 2

Graphics Card

Apr 2012

Release Date

Jun 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

1002 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

91.87GB/s

Bandwidth

192.4GB/s

Render Config

-

6

SM Count

16

288

Shading Units

512

48

TMUs

64

24

ROPs

48

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

768 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

24.70 GPixel/s

37.25 GTexel/s

Texture Rate

49.41 GTexel/s

-

894.0 GFLOPS

FP32 (float)

1.581 TFLOPS

74.50 GFLOPS

FP64 (double)

197.6 GFLOPS

Board Design

102W

TDP

244W

300 W

Suggested PSU

550 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x mini-HDMI 1.3a

-

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GF114

GPU Name

GF110

-

GPU Variant

GF110-380-A1

Fermi 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.95 billion

Transistors

3 billion

332 mm²

Die Size

520 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

2.0

5.1

Shader Model

5.1

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