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

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 580 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 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 640 's Advantages

Released 1 years late

More VRAM (2GB vs 1536GB)

Lower TDP (65W vs 244W)

NVIDIA GeForce GTX 580 Rev. 2 's Advantages

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

128 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce GTX 580 Rev. 2 +128%

1.581 TFLOPS

GeForce GT 640

VS

GeForce GTX 580 Rev. 2

Graphics Card

Jun 2012

Release Date

Jun 2011

GeForce 600

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

1002 MHz

Memory

2GB

Memory Size

1536MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

192.4GB/s

Render Config

-

SM Count

16

384

Shading Units

512

32

TMUs

64

16

ROPs

48

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

24.70 GPixel/s

28.86 GTexel/s

Texture Rate

49.41 GTexel/s

-

692.7 GFLOPS

FP32 (float)

1.581 TFLOPS

28.86 GFLOPS

FP64 (double)

197.6 GFLOPS

Board Design

65W

TDP

244W

250 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

GF110

GK107-300-A2

GPU Variant

GF110-380-A1

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

3 billion

118 mm²

Die Size

520 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

2.0

5.1

Shader Model

5.1

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