NVIDIA GeForce GTX 580 Rev. 2 vs NVIDIA GeForce GT 640 OEM

VS

NVIDIA GeForce GTX 580 Rev. 2

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 580 Rev. 2 and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 580 Rev. 2 's Advantages

Larger VRAM bandwidth (192.4GB/s vs 28.51GB/s)

128 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Released 10 months late

More VRAM (2GB vs 1536GB)

Lower TDP (50W vs 244W)

Score

Benchmark

FP32 (float)

GeForce GTX 580 Rev. 2 +158%

1.581 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

GeForce GTX 580 Rev. 2

VS

GeForce GT 640 OEM

Graphics Card

Jun 2011

Release Date

Apr 2012

GeForce 500

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1002 MHz

Memory Clock

891 MHz

Memory

1536MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

128bit

192.4GB/s

Bandwidth

28.51GB/s

Render Config

-

16

SM Count

-

512

Shading Units

384

64

TMUs

32

48

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

24.70 GPixel/s

Pixel Rate

6.376 GPixel/s

49.41 GTexel/s

Texture Rate

25.50 GTexel/s

-

1.581 TFLOPS

FP32 (float)

612.1 GFLOPS

197.6 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

244W

TDP

50W

550 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

GF110

GPU Name

GK107

GF110-380-A1

GPU Variant

GK107-320-A2

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

3 billion

Transistors

1.27 billion

520 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.0

CUDA

3.0

5.1

Shader Model

5.1

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