NVIDIA GeForce GT 640 vs NVIDIA GeForce GTS 450 Rev. 3

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTS 450 Rev. 3

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM GeForce GTS 450 Rev. 3 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.51GB/s vs 22.40GB/s)

240 additional rendering cores

Lower TDP (65W vs 106W)

Score

Benchmark

FP32 (float)

GeForce GT 640 +53%

0.693 TFLOPS

GeForce GTS 450 Rev. 3

0.451 TFLOPS

GeForce GT 640

VS

GeForce GTS 450 Rev. 3

Graphics Card

Jun 2012

Release Date

Jul 2012

GeForce 600

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

22.40GB/s

Render Config

-

SM Count

3

384

Shading Units

144

32

TMUs

24

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

4.698 GPixel/s

28.86 GTexel/s

Texture Rate

18.79 GTexel/s

-

692.7 GFLOPS

FP32 (float)

451.0 GFLOPS

28.86 GFLOPS

FP64 (double)

37.58 GFLOPS

Board Design

65W

TDP

106W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

-

Graphics Processor

GK107

GPU Name

GF116

GK107-300-A2

GPU Variant

GF116-200-KA-A1

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

1.17 billion

118 mm²

Die Size

238 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

2.1

5.1

Shader Model

5.1

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