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

VS

NVIDIA GeForce GTX 260

NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 260 and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 260 's Advantages

Larger VRAM bandwidth (111.9GB/s vs 40.06GB/s)

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Released 4 years and 11 months late

More VRAM (1024GB vs 896GB)

192 additional rendering cores

Lower TDP (49W vs 182W)

Score

Benchmark

FP32 (float)

GeForce GTX 260

0.477 TFLOPS

GeForce GT 640 Rev. 2 +68%

0.803 TFLOPS

GeForce GTX 260

VS

GeForce GT 640 Rev. 2

Graphics Card

Jun 2008

Release Date

May 2013

GeForce 200

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

-

999 MHz

Memory Clock

1252 MHz

Memory

896MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

448bit

Memory Bus

64bit

111.9GB/s

Bandwidth

40.06GB/s

Render Config

-

24

SM Count

-

192

Shading Units

384

64

TMUs

32

28

ROPs

8

-

L1 Cache

16 KB (per SMX)

224 KB

L2 Cache

512 KB

-

Theoretical Performance

16.13 GPixel/s

Pixel Rate

8.368 GPixel/s

36.86 GTexel/s

Texture Rate

33.47 GTexel/s

-

476.9 GFLOPS

FP32 (float)

803.3 GFLOPS

59.62 GFLOPS

FP64 (double)

33.47 GFLOPS

Board Design

182W

TDP

49W

450 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

GT200

GPU Name

GK208

G200-100-A2

GPU Variant

GK208-400-A1

Tesla 2.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

65 nm

Process Size

28 nm

1.4 billion

Transistors

1.02 billion

576 mm²

Die Size

87 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

3.5

4.0

Shader Model

5.1

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