NVIDIA GeForce GTX 260 Rev. 2 vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce GTX 260 Rev. 2

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 260 Rev. 2 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 260 Rev. 2 's Advantages

Larger VRAM bandwidth (111.9GB/s vs 28.51GB/s)

NVIDIA GeForce GT 640 's Advantages

Released 3 years and 11 months late

More VRAM (2GB vs 896GB)

192 additional rendering cores

Lower TDP (65W vs 182W)

Score

Benchmark

FP32 (float)

GeForce GTX 260 Rev. 2

0.477 TFLOPS

GeForce GT 640 +45%

0.693 TFLOPS

GeForce GTX 260 Rev. 2

VS

GeForce GT 640

Graphics Card

Jul 2008

Release Date

Jun 2012

GeForce 200

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

999 MHz

Memory Clock

891 MHz

Memory

896MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

448bit

Memory Bus

128bit

111.9GB/s

Bandwidth

28.51GB/s

Render Config

-

24

SM Count

-

192

Shading Units

384

64

TMUs

32

28

ROPs

16

-

L1 Cache

16 KB (per SMX)

224 KB

L2 Cache

256 KB

-

Theoretical Performance

16.13 GPixel/s

Pixel Rate

7.216 GPixel/s

36.86 GTexel/s

Texture Rate

28.86 GTexel/s

-

476.9 GFLOPS

FP32 (float)

692.7 GFLOPS

59.62 GFLOPS

FP64 (double)

28.86 GFLOPS

Board Design

182W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

GT200B

GPU Name

GK107

G200-103-B3

GPU Variant

GK107-300-A2

Tesla 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

1.4 billion

Transistors

1.27 billion

470 mm²

Die Size

118 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

1.3

CUDA

3.0

4.0

Shader Model

5.1

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