NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 560 Ti X2

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 560 Ti X2

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 1024MB VRAM GeForce GTX 560 Ti X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 1 years and 3 months late

More VRAM (1536GB vs 1024GB)

Lower TDP (75W vs 170W)

NVIDIA GeForce GTX 560 Ti X2 's Advantages

Larger VRAM bandwidth (128.3GB/s vs 38.40GB/s)

240 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 560 Ti X2 +214%

1.306 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 560 Ti X2

Graphics Card

Apr 2012

Release Date

Jan 2011

GeForce 600

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1002 MHz

Memory

1536MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

256bit

38.40GB/s

Bandwidth

128.3GB/s

Render Config

-

3

SM Count

8

144

Shading Units

384

24

TMUs

64

24

ROPs

32

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

13.60 GPixel/s

17.28 GTexel/s

Texture Rate

54.40 GTexel/s

-

414.7 GFLOPS

FP32 (float)

1306 GFLOPS

34.56 GFLOPS

FP64 (double)

108.8 GFLOPS

Board Design

75W

TDP

170W

250 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

3x DVI 1x mini-HDMI 1.3a

None

Power Connectors

2x 8-pin

Graphics Processor

GF116

GPU Name

GF114

GF116-150-A1

GPU Variant

GF114-400-A1

Fermi 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

1.95 billion

238 mm²

Die Size

332 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

2.1

5.1

Shader Model

5.1

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