NVIDIA GeForce GT 140 OEM vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce GT 140 OEM

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 140 OEM 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 GT 140 OEM 's Advantages

Larger VRAM bandwidth (57.60GB/s vs 28.51GB/s)

NVIDIA GeForce GT 640 's Advantages

Released 3 years and 3 months late

More VRAM (2GB vs 1024GB)

320 additional rendering cores

Lower TDP (65W vs 105W)

Score

Benchmark

FP32 (float)

GeForce GT 140 OEM

0.208 TFLOPS

GeForce GT 640 +233%

0.693 TFLOPS

GeForce GT 140 OEM

VS

GeForce GT 640

Graphics Card

Mar 2009

Release Date

Jun 2012

GeForce 100

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

891 MHz

Memory

1024MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

128bit

57.60GB/s

Bandwidth

28.51GB/s

Render Config

-

8

SM Count

-

64

Shading Units

384

32

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per SMX)

64 KB

L2 Cache

256 KB

-

Theoretical Performance

10.40 GPixel/s

Pixel Rate

7.216 GPixel/s

20.80 GTexel/s

Texture Rate

28.86 GTexel/s

-

208.0 GFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Board Design

105W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

G94B

GPU Name

GK107

-

GPU Variant

GK107-300-A2

Tesla

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.505 billion

Transistors

1.27 billion

196 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

CUDA

3.0

4.0

Shader Model

5.1

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